TPS79333DBVRG4Q1 [TI]
ULTRALOW-NOISE, HIGH-PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS;
| 型号： | TPS79333DBVRG4Q1 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | ULTRALOW-NOISE, HIGH-PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS 信息通信管理 光电二极管 输出元件 调节器 |
| 文件： | 总21页 (文件大小：879K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
www.ti.com
SGLS162H –APRIL 2003–REVISED JANUARY 2013
ULTRALOW-NOISE, HIGH-PSRR, FAST RF 200-mA
LOW-DROPOUT LINEAR REGULATORS
Check for Samples: TPS79301-Q1, TPS79318-Q1, TPS79325-Q1, TPS79328-Q1, TPS793285-Q1, TPS79330-Q1, TPS79333-Q1
1
FEATURES
APPLICATIONS
2
•
Qualified For Automotive Applications
200-mA Low-Dropout Regulator With EN
•
•
•
VCOs
•
•
RF
Available in 1.8-V, 2.5-V, 2.8-V, 2.85-V, 3-V, 3.3-
V, 4.75-V, and Adjustable Options
Bluetooth™
DBV PACKAGE
(TOP VIEW)
•
•
•
•
•
•
High PSRR (70 dB at 10 kHz)
Ultralow Noise (32 μV)
IN
1
2
5
OUT
Fast Start-Up Time (50 μs)
GND
EN
Stable With a 2.2-μF Ceramic Capacitor
Excellent Load/Line Transient
3
4
BYPASS
Very Low Dropout Voltage
Fixed Option
(112 mV at Full Load, TPS79330)
DBV PACKAGE
(TOP VIEW)
•
5-Pin SOT23 (DBV) Package
IN
GND
EN
1
2
6
5
OUT
FB
3
4
BYPASS
Adjustable Option
DESCRIPTION
The TPS793xx family of low-dropout (LDO) low-power linear voltage regulators features high power-supply
rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in a small-
outline SOT23 package. Each device in the family is stable, with a small 2.2-μF ceramic capacitor on the output.
The TPS793xx family uses an advanced, proprietary, BiCMOS fabrication process to yield extremely low dropout
voltages (e.g., 112 mV at 200 mA, TPS79330). Each device achieves fast start-up times (approximately 50 μs
with a 0.001-μF bypass capacitor), while consuming very low quiescent current (170 μA typical). Moreover, when
the device is placed in standby mode, the supply current is reduced to less than 1 μA. The TPS79328 exhibits
approximately 32 μVRMS of output voltage noise with a 0.1-μF bypass capacitor. Applications with analog
components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR and low-noise
features, as well as the fast response time.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
Bluetooth is a trademark of Bluetooth SIG, Inc.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2013, Texas Instruments Incorporated
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
TPS79328
RIPPLE REJECTION
vs
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
vs
FREQUENCY
FREQUENCY
0.3
100
90
V = 3.8 V
I
I
= 200 mA
O
C
C
= 2.2 µF
o
0.25
0.2
80
= 0.1 µF
(byp)
70
60
0.15
50
40
30
I
= 1 mA
O
I
= 10 mA
O
0.1
I
= 200 mA
O
20
10
0
V = 3.8 V
I
0.05
C
C
= 10 µF
o
= 0.01 µF
(byp)
0
100
1 k
10 k
100 k
10
100
1 k
10 k 100 k 1 M 10 M
f − Frequency − Hz
f − Frequency − Hz
ORDERING INFORMATION(1)
OUTPUT
VOLTAGE
TA
PACKAGE(2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
1.2 to 5.5 V
1.8 V
TPS79301DBVRQ1
TPS79318DBVRQ1
TPS79325DBVRQ1
TPS79328DBVRQ1
TPS793285QDBVRQ1
TPS79330QDBVRQ1
TPS79333DBVRQ1
TPS793475QDBVRQ1(3)
PGV1
PHH1
PGW1
PGX1
PHI1
2.5 V
2.8 V
–40°C to 125°C
SOT23 – DBV
Reel of 3000
2.85 V
3 V
PGY1
PHU1
PHJ1
3.3 V
4.75 V
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(3) Product preview
2
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
www.ti.com
SGLS162H –APRIL 2003–REVISED JANUARY 2013
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
MIN
–0.3
–0.3
–0.3
MAX
UNIT
Input voltage range(2)
Voltage range at EN
Voltage on OUT
6
VI + 0.3
6
V
V
V
Peak output current
Internally limited
Human-Body Model (HBM)
Charged-Device Model (CDM)
2000
250
V
ESD rating
Continuous total power dissipation
Operating junction temperature range
Storage temperature range
See Dissipation Rating Table
TJ
–40
–65
150
150
°C
°C
Tstg
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) All voltage values are with respect to network ground terminal
DISSIPATION RATINGS
DERATING
FACTOR ABOVE
TA = 25°C
T
A ≤ 25°C
TA = 70°C
POWER
RATING
TA = 85°C
POWER
RATING
BOARD
PACKAGE
RθJC
RθJA
POWER
RATING
Low K(1)
High K(2)
DBV
DBV
63.75°C/W
63.75°C/W
256°C/W
3.906 mW/°C
5.609 mW/°C
391 mW
561 mW
215 mW
308 mW
156 mW
224 mW
178.3°C/W
(1) The JEDEC low K (1s) board design used to derive this data was a 3-in × 3-in, two layer board with 2-oz copper traces on top of the
board.
(2) The JEDEC high K (2s2p) board design used to derive this data was a 3-in × 3-in, multilayer board with 1-oz internal power and ground
planes and 2-oz copper traces on top and bottom of the board.
Copyright © 2003–2013, Texas Instruments Incorporated
Submit Documentation Feedback
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Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range, EN = VI, TJ = –40 to 125°C, VI = VO(typ) + 1 V, IO = 1 mA, Co = 10
μF, C(byp) = 0.01 μF (unless otherwise noted)
PARAMETER
Input voltage(1)
TEST CONDITIONS
MIN
2.7
0
TYP
MAX
5.5
UNIT
V
VI
IO
TJ
Continuous output current
200
125
mA
°C
Operating junction temperature
–40
0 μA < IO < 200 mA
5.5 –
VFB
TPS79301-Q1
VFB
TJ = 25°C
1.8
2.5
TPS79318-Q1
TPS79325-Q1
TPS79328-Q1
TPS793285-Q1
TPS79330-Q1
TPS79333-Q1
TPS793475-Q1
0 μA < IO < 200 mA,
TJ = 25°C
2.8 V < VI < 5.5 V
3.5 V < VI < 5.5 V
3.8 V < VI < 5.5 V
3.85 V < VI < 5.5 V
4 V < VI < 5.5 V
1.764
2.45
1.836
2.55
0 μA < IO < 200 mA,
TJ = 25°C
2.8
0 μA < IO < 200 mA,
TJ = 25°C
2.744
2.793
2.94
2.856
2.907
3.06
Output voltage
V
2.85
3
0 μA < IO < 200 mA,
TJ = 25°C
0 μA < IO < 200 mA,
TJ = 25°C
3.3
0 μA < IO < 200 mA,
TJ = 25°C
4.3 V < VI < 5.5 V
3.234
4.655
3.366
4.845
220
4.75
170
0 μA < IO < 200 mA,
0 μA < IO < 200 mA,
0 μA < IO < 200 mA
0 μA < IO < 200 mA,
VO + 1 V < VI ≤ 5.5 V,
VO + 1 V < VI ≤ 5.5 V
5.25 V < VI < 5.5 V
TJ = 25°C
Quiescent current (GND current)
Load regulation
μA
mV
%/V
TJ = 25°C
TJ = 25°C
5
0.05
Output voltage line regulation (ΔVO/VO)
0.12
C(byp) = 0.001 μF
C(byp) = 0.0047 μF
C(byp) = 0.01 μF
C(byp) = 0.1 μF
55
36
BW = 200 Hz to 100 kHz,
IO = 200 mA, TJ = 25°C
Output noise voltage
TPS79328-Q1
TPS79328-Q1
μVRMS
33
32
C(byp) = 0.001 μF
C(byp) = 0.0047 μF
C(byp) = 0.01 μF
50
RL = 14 Ω,
Co = 1 μF, TJ = 25°C
Time, start-up
70
μs
100
Output current limit
Standby current(2)
VO = 0 V
285
2
600
1
mA
μA
V
EN = 0 V,
2.7 V < VI < 5.5 V
0.07
High-level enable input voltage
Low-level enable input voltage
Input current (EN)
2.7 V < VI < 5.5 V
2.7 V < VI < 5.5 V
EN = 0
0.7
1
V
–1
μA
μA
V
Input current (FB)
TPS79301-Q1
FB = 1.8 V
1
Internal reference, VFB
TPS79301-Q1
1.201 1.225
1.250
IO = 10 mA
70
68
70
43
f = 100 Hz, TJ = 25°C,
IO = 200 mA
Power-supply ripple
rejection
TPS79328-Q1
dB
f = 10 kHz, TJ = 25°C,
f = 100 kHz, TJ = 25°C,
IO = 200 mA
(1) Minimum VIN is 2.7V or VOUT + VDO, whichever is greater.
(2) For adjustable versions, this parameter applies only after VIN is applied; then VEN transitions high to low.
4
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
www.ti.com
SGLS162H –APRIL 2003–REVISED JANUARY 2013
ELECTRICAL CHARACTERISTICS (continued)
over recommended operating free-air temperature range, EN = VI, TJ = –40 to 125°C, VI = VO(typ) + 1 V, IO = 1 mA, Co = 10
μF, C(byp) = 0.01 μF (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TJ = 25°C
MIN
TYP
MAX
200
200
200
180
UNIT
IO = 200 mA,
IO = 200 mA
IO = 200 mA,
IO = 200 mA
IO = 200 mA,
IO = 200 mA
IO = 200 mA,
IO = 200 mA
IO = 200 mA,
IO = 200 mA
VCC rising
120
TPS79328-Q1
TJ= 25°C
TJ = 25°C
TJ = 25°C
TJ = 25°C
120
112
102
77
TPS793285-Q1
TPS79330-Q1
TPS79333-Q1
TPS793475-Q1
Dropout voltage(3)
mV
125
UVLO threshold
UVLO hysteresis
2.25
2.65
V
TJ = 25°C
VCC rising
100
mV
(3) Dropout is not measured for the TPS79318-Q1 and TPS79325-Q1 since minimum VIN = 2.7 V.
Copyright © 2003–2013, Texas Instruments Incorporated
Submit Documentation Feedback
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Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013
www.ti.com
FUNCTIONAL BLOCK DIAGRAM – ADJUSTABLE VERSION
V
OUT
V
IN
Current
Sense
UVLO
SHUTDOWN
ILIM
R1
_
GND
EN
+
FB
R2
UVLO
Thermal
External to
the Device
Shutdown
250 kΩ
V
ref
Bandgap
Reference
Bypass
V
IN
FUNCTIONAL BLOCK DIAGRAM – FIXED VERSION
V
IN
V
OUT
UVLO
Current
Sense
GND
EN
SHUTDOWN
ILIM
R1
R2
_
+
UVLO
Thermal
Shutdown
250 kΩ
V
ref
Bandgap
Reference
V
IN
Bypass
TERMINAL FUNCTIONS
TERMINAL
I/O
DESCRIPTION
NAME
ADJ
FIXED
An external bypass capacitor, connected to this terminal, in conjunction with an internal
resistor, creates a low-pass filter to further reduce regulator noise.
BYPASS
4
4
Enable input that enables or shuts down the device. When EN goes to a logic high, the
device is enabled. When the device goes to a logic low, the device is in shutdown mode.
EN
3
3
I
I
FB
5
2
1
6
N/A
2
Feedback input voltage for the adjustable device
Regulator ground
GND
IN
1
I
Input to the device
OUT
5
O
Regulated output of the device
6
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
www.ti.com
SGLS162H –APRIL 2003–REVISED JANUARY 2013
TYPICAL CHARACTERISTICS
TPS79328
OUTPUT VOLTAGE
vs
TPS79328
OUTPUT VOLTAGE
vs
TPS79328
GROUND CURRENT
vs
OUTPUT CURRENT
JUNCTION TEMPERATURE
JUNCTION TEMPERATURE
2.805
2.8
2.805
2.804
2.803
2.802
2.801
2.8
250
200
V = 3.8 V
I
V = 3.8 V
I
C
T
= 10 µF
= 25° C
o
C
o
= 10 µF
I
= 1 mA
O
J
I
= 1 mA
O
2.795
2.79
I
= 200 mA
O
150
2.799
100
50
0
I
= 200 mA
O
2.785
2.798
2.797
2.78
V = 3.8 V
= 10 µF
I
2.796
C
o
2.795
0
2.775
−40 −25 −10 5 20 35 50 65 80 95 110 125
50
100
150
200
−40 −25−10 5 20 35 50 65 80 95 110 125
T
J
− Junction Temperature − °C
I
− Output Current − mA
T
J
− Junction Temperature − °C
O
Figure 1.
Figure 2.
Figure 3.
TPS79328
TPS79328
TPS79328
OUTPUT SPECTRAL NOISE DENSITY
OUTPUT SPECTRAL NOISE DENSITY
vs
OUTPUT SPECTRAL NOISE DENSITY
vs
vs
FREQUENCY
FREQUENCY
FREQUENCY
0.3
1.6
0.3
V = 3.8 V
I
V = 3.8 V
V = 3.8 V
I
I
1.4
1.2
1
I
= 200 mA
O
C
C
= 2.2 µF
C = 10 µF
o
o
0.25
0.2
0.25
0.2
0.15
0.1
0.05
0
C = 10 µF
o
= 0.1 µF
C = 0.1 µF
(byp)
(byp)
C
= 0.001 µF
(byp)
C
= 0.0047 µF
= 0.01 µF
(byp)
C
I
= 1 mA
(byp)
0.8
0.6
0.4
0.2
0
O
0.15
I
= 1 mA
O
C
= 0.1 µF
(byp)
0.1
I
= 200 mA
O
I = 200 mA
O
0.05
0
100
1 k
10 k
100 k
100
1 k
10 k
100 k
100
1 k
10 k
100 k
f − Frequency − Hz
f − Frequency − Hz
f − Frequency − Hz
Figure 4.
Figure 5.
Figure 6.
TPS79328
DROPOUT VOLTAGE
vs
ROOT MEAN SQUARED OUTPUT NOISE
vs
OUTPUT IMPEDANCE
vs
BYPASS CAPACITANCE
FREQUENCY
2.5
60
JUNCTION TEMPERATURE
V = 3.8 V
= 10 µF
= 25° C
I
V
= 2.8 V
180
160
140
120
100
80
O
C
o
V = 2.7 V
I
C = 10 µF
o
I
C
= 200 mA
= 10 µF
O
50
40
30
20
10
T
J
o
2
1.5
I
= 200 mA
O
I
= 1 mA
O
1
I
= 100 mA
O
60
0.5
40
BW = 100 Hz to 100
kHz
I = 10 mA
O
20
0
0
10
100
1 k
10 k 100 k 1 M
10 M
0.001
0.01
0.1
0
−40 −25−10 5 20 35 50 65 80 95 110 125
f − Frequency − Hz
C
(byp)
− Bypass Capacitance − µF
T
J
− Junction Temperature − °C
Figure 7.
Figure 8.
Figure 9.
Copyright © 2003–2013, Texas Instruments Incorporated
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Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013
www.ti.com
TYPICAL CHARACTERISTICS (continued)
TPS79328
RIPPLE REJECTION
vs
TPS79328
RIPPLE REJECTION
vs
TPS79328
RIPPLE REJECTION
vs
FREQUENCY
FREQUENCY
FREQUENCY
100
90
80
70
60
50
40
30
100
90
80
70
60
50
40
100
90
V = 3.8 V
V = 3.8 V
I
I
I
= 200 mA
C
o
= 2.2 µF
C = 2.2 µF
o
O
C
(byp)
= 0.01 µF
C
(byp)
= 0.1 µF
I
= 200 mA
O
80
I
= 200 mA
O
70
60
50
40
30
I
= 10 mA
O
I
= 10 mA
O
I
= 10 mA
O
30
20
20
20
10
0
V = 3.8 V
= 10 µF
I
C
C
o
10
0
10
0
= 0.01 µF
(byp)
100
10
1 k
10 k 100 k 1 M 10 M
10
100
1 k
10 k 100 k 1 M 10 M
10
100
1 k
10 k 100 k 1 M 10 M
f − Frequency − Hz
f − Frequency − Hz
f − Frequency − Hz
Figure 10.
Figure 11.
Figure 12.
TPS79328
TPS79328
TPS79328
OUTPUT VOLTAGE, ENABLE VOLTAGE
LINE TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
vs
V = 3.8 V
I
TIME (START-UP)
4.8
20
C
o
= 10 µF
0
4
3.8
−20
2
0
V = 3.8 V
I
I
C
C
= 200 mA
= 2.2 µF
O
V
= 2.8 V
O
−40
300
o
I
C
T
= 200 mA
= 2.2 µF
= 25°C
O
= 0.01 µF
dv
dt
0µ.4sV
(byp)
+
o
di
0.02A
20
0
+
µs
dt
J
C
(byp)
= 0.001 µF
200
100
3
2
1
0
1mA
-20
C
= 0.0047 µF
= 0.01 µF
(byp)
0
0
50 100 150200 250 300 350 400 450 500
0
10 20 30 40 50 60 70 80 90 100
C
(byp)
t − Time − µs
t − Time − µs
0
20 40 60 80 100 120 140 160 180 200
t − Time − µs
Figure 13.
Figure 14.
Figure 15.
TPS79301
DROPOUT VOLTAGE
vs
POWER UP / POWER DOWN
DC DROPOUT VOLTAGE
vs
OUTPUT CURRENT
V
= 3 V
O
R
L
= 15 Ω
250
200
150
100
INPUT VOLTAGE
200
T
= 125°C
= 25°C
J
150
100
T
J
= 125°C
V
T = 25°C
J
I
T
J
V
O
T
= −55°C
J
50
0
50
0
T
= −40°C
J
1s/div
I
= 200 mA
3
O
0
20 40 60 80 100 120 140 160 180 200
2.5
3.5
4
4.5
5
I
− Output Current − mA
O
V − Input Voltage − V
I
Figure 16.
Figure 17.
Figure 18.
8
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Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
www.ti.com
SGLS162H –APRIL 2003–REVISED JANUARY 2013
TYPICAL CHARACTERISTICS (continued)
MINIMUM REQUIRED INPUT VOLTAGE
TYPICAL REGIONS OF STABILITY
TYPICAL REGIONS OF STABILITY
vs
EQUIVALENT SERIES RESISTANCE (ESR) EQUIVALENT SERIES RESISTANCE (ESR)
OUTPUT VOLTAGE
vs
vs
4
OUTPUT CURRENT
OUTPUT CURRENT
I
= 200 mA
O
100
10
100
10
T
J
= 125°C
C
= 2.2 µF
o
C
= 10 µF
o
V = 5.5 V, V ≥ 1.5 V
I
O
V = 5.5 V
I
T
J
= 25°C
T
J
= −40°C to 125°C
T = −40°C to 125°C
J
T
J
= −40°C
Region of Instability
Region of Instability
3
2.8
1
1
0.1
0.1
Region of Stability
Region of Stability
2
1.5 1.75
2
2.25 2.5 2.75
3
3.25 3.5
0.01
0.01
V
− Output Voltage − V
0
0.02
0.04
0.06
0.08
0.2
O
0
0.02
0.04
0.06
0.08
0.2
I
− Output Current − A
O
I
− Output Current − A
O
Figure 19.
Figure 20.
Figure 21.
Copyright © 2003–2013, Texas Instruments Incorporated
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TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013
www.ti.com
APPLICATION INFORMATION
The TPS793xx family of low-dropout (LDO) regulators has been optimized for use in noise-sensitive battery-
operated equipment. The device features extremely low dropout voltages, high PSRR, ultralow output noise, low
quiescent current (170 μA typically), and enable-input to reduce supply currents to less than 1 μA when the
regulator is turned off.
A typical application circuit is shown in Figure 22.
TPS793xx
1
V
I
IN
4
5
BYPASS
OUT
V
O
3
0.1 µF
0.01 µF
EN
+
2.2 µF
GND
2
Figure 22. Typical Application Circuit
External Capacitor Requirements
A 0.1-μF or larger ceramic input bypass capacitor, connected between IN and GND and located close to the
TPS793xx, is required for stability and improves transient response, noise rejection, and ripple rejection. A
higher-value electrolytic input capacitor may be necessary if large, fast-rise-time load transients are anticipated
and the device is located several inches from the power source.
Like all LDOs, the TPS793xx requires an output capacitor connected between OUT and GND to stabilize the
internal control loop. The minimum recommended capacitance is 2.2-μF. Any 2.2-μF or larger ceramic capacitor
is suitable, provided the capacitance does not vary significantly over temperature.
The internal voltage reference is a key source of noise in an LDO regulator. The TPS793xx has a BYPASS pin
that is connected to the voltage reference through a 250-kΩ internal resistor. The 250-kΩ internal resistor, in
conjunction with an external bypass capacitor connected to the BYPASS pin, creates a low pass filter to reduce
the voltage reference noise and, therefore, the noise at the regulator output. In order for the regulator to operate
properly, the current flow out of the BYPASS pin must be at a minimum, because any leakage current creates an
IR drop across the internal resistor, thus, creating an output error. Therefore, the bypass capacitor must have
minimal leakage current.
For example, the TPS79328 exhibits only 32 μVRMS of output voltage noise using a 0.1-μF ceramic bypass
capacitor and a 2.2-μF ceramic output capacitor. Note that the output starts up slower as the bypass capacitance
increases due to the RC time constant at the BYPASS pin that is created by the internal 250-kΩ resistor and
external capacitor.
Board Layout Recommendation to Improve PSRR and Noise Performance
To improve ac measurements like PSRR, output noise, and transient response, it is recommended that the board
be designed with separate ground planes for VIN and VOUT, with each ground plane connected only at the GND
pin of the device. In addition, the ground connection for the bypass capacitor should connect directly to the GND
pin of the device.
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Product Folder Links: TPS79301-Q1 TPS79318-Q1 TPS79325-Q1 TPS79328-Q1 TPS793285-Q1 TPS79330-Q1
TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
www.ti.com
SGLS162H –APRIL 2003–REVISED JANUARY 2013
Power Dissipation and Junction Temperature
Specified regulator operation is ensured to a junction temperature of 125°C; the maximum junction temperature
should be restricted to 125°C under normal operating conditions. This restriction limits the power dissipation the
regulator can handle in any given application. To ensure the junction temperature is within acceptable limits,
calculate the maximum allowable dissipation, PD(max), and the actual dissipation, PD, which must be less than or
equal to PD(max)
.
The maximum power dissipation limit is determined using the following equation:
T max * T
J
+
A
P
D(max)
R
θJA
(1)
Where:
TJmax = Maximum allowable junction temperature
RθJA = Thermal resistance, junction to ambient, for the package, see the dissipation rating table
TA = Ambient temperature
The regulator dissipation is calculated using:
+ ǒVI * V
Ǔ
P
I
D
O
O
(2)
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation triggers the thermal
protection circuit.
Programming the TPS79301 Adjustable LDO Regulator
The output voltage of the TPS79301 adjustable regulator is programmed using an external resistor divider as
shown in Figure 23. The output voltage is calculated using:
R1
R2
ǒ1 ) Ǔ
V
+ V
O
ref
(3)
Where:
Vref = 1.2246 V typical (the internal reference voltage)
Resistors R1 and R2 should be chosen for approximately 50-μA divider current. Lower-value resistors can be
used for improved noise performance, but the solution consumes more power. Higher resistor values should be
avoided as leakage current into/out of FB across R1/R2 creates an offset voltage that artificially
increases/decreases the feedback voltage and, thus, erroneously decreases/increases VO. The recommended
design procedure is to choose R2 = 30.1 kΩ to set the divider current at 50 μA, C1 = 15 pF for stability, and then
calculate R1 using:
V
O
R1 +
* 1 R2
ǒ Ǔ
V
ref
(4)
In order to improve the stability of the adjustable version, it is suggested that a small compensation capacitor be
placed between OUT and FB. For voltages <1.8 V, the value of this capacitor should be 100 pF. For voltages
>1.8 V, the approximate value of this capacitor can be calculated as:
–7
(3 x 10 ) x (R1 ) R2)
C1 +
(R1 x R2)
(5)
The suggested value of this capacitor for several resistor ratios is shown in the table below. If this capacitor is
not used (such as in a unity-gain configuration) or if an output voltage <1.8 V is chosen, then the minimum
recommended output capacitor is 4.7 μF instead of 2.2 μF.
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TPS79333-Q1
TPS79301-Q1, TPS79318-Q1, TPS79325-Q1
TPS79328-Q1, TPS793285-Q1, TPS79330-Q1
TPS79333-Q1, TPS793475-Q1
SGLS162H –APRIL 2003–REVISED JANUARY 2013
www.ti.com
TPS79301
OUTPUT VOLTAGE
PROGRAMMING GUIDE
V
I
IN
1 µF
OUTPUT
R1
R2
C1
≥ 2 V
VOLTAGE
EN
OUT
V
O
C1
31.6 kΩ 30.1 kΩ 22 pF
51 kΩ 30.1 kΩ 15 pF
59 kΩ 30.1 kΩ 15 pF
2.5 V
3.3 V
3.6 V
R1
R2
≤ 0.7 V
1 µF
BYPASS FB
GND
0.01 µF
Figure 23. TPS79301 Adjustable LDO Regulator Programming
Regulator Protection
The TPS793xx features internal current limiting and thermal protection. During normal operation, the TPS793xx
limits output current to approximately 400 mA. When current limiting engages, the output voltage scales back
linearly until the overcurrent condition ends. While current limiting is designed to prevent gross device failure,
care should be taken not to exceed the power dissipation ratings of the package or the absolute maximum
voltage ratings of the device. If the temperature of the device exceeds approximately 165°C, thermal-protection
circuitry shuts it down. Once the device has cooled down to below approximately 140°C, regulator operation
resumes.
The TPS793xx PMOS-pass transistor has a built-in back diode that conducts reverse current when the input
voltage drops below the output voltage (for example, during power-down). Current is conducted from the output
to the input and is not internally limited. If extended reverse voltage operation is anticipated, external limiting
might be appropriate.
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TPS79333-Q1
PACKAGE OPTION ADDENDUM
www.ti.com
28-Jan-2014
PACKAGING INFORMATION
Orderable Device
TPS79301DBVRG4Q1
TPS79301DBVRQ1
TPS79318DBVRG4Q1
TPS79318DBVRQ1
TPS79325DBVRG4Q1
TPS79325DBVRQ1
TPS793285QDBVRQ1
TPS79328QDBVRQ1
TPS79330QDBVRQ1
TPS79333DBVRG4Q1
TPS79333DBVRQ1
TPS793475DBVRG4Q1
TPS793475DBVRQ1
Status Package Type Package Pins Package
Eco Plan
Lead/Ball Finish
MSL Peak Temp
Op Temp (°C)
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
-40 to 125
Device Marking
Samples
Drawing
Qty
(1)
(2)
(6)
(3)
(4/5)
ACTIVE
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
DBV
6
6
5
5
5
5
5
5
5
5
5
5
5
3000
Green (RoHS
& no Sb/Br)
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
CU NIPDAU
Call TI
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Level-1-260C-UNLIM
Call TI
PGV1
PGV1
PHH1
PHH1
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
ACTIVE
OBSOLETE
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
1
Green (RoHS
& no Sb/Br)
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
PGW1
PGW1
PHI1
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
PGX1
PGY1
PHU1
PHU1
PHJ1
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
Green (RoHS
& no Sb/Br)
TBD
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
28-Jan-2014
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
(4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.
(5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation
of the previous line and the two combined represent the entire Device Marking for that device.
(6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish
value exceeds the maximum column width.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF TPS79301-Q1, TPS79318-Q1, TPS79325-Q1, TPS79328-Q1, TPS793285-Q1, TPS79330-Q1, TPS79333-Q1, TPS793475-Q1 :
Catalog: TPS79301, TPS79318, TPS79325, TPS79328, TPS793285, TPS79330, TPS79333, TPS793475
•
Enhanced Product: TPS79301-EP, TPS79318-EP, TPS79325-EP, TPS79333-EP, TPS793475-EP
•
NOTE: Qualified Version Definitions:
Catalog - TI's standard catalog product
•
Enhanced Product - Supports Defense, Aerospace and Medical Applications
•
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
28-Jan-2014
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0
B0
K0
P1
W
Pin1
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant
(mm) W1 (mm)
TPS79301DBVRG4Q1 SOT-23
TPS79301DBVRQ1 SOT-23
TPS79318DBVRG4Q1 SOT-23
TPS79318DBVRQ1 SOT-23
TPS79325DBVRG4Q1 SOT-23
TPS79325DBVRQ1 SOT-23
TPS793285QDBVRQ1 SOT-23
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
6
6
5
5
5
5
5
5
5
5
5
5
3000
1
180.0
180.0
180.0
180.0
180.0
180.0
180.0
179.0
179.0
180.0
180.0
180.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
8.4
8.4
9.0
9.0
9.0
3.15
3.15
3.15
3.15
3.15
3.15
3.15
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
8.0
Q3
Q3
Q3
Q3
Q3
Q3
Q3
Q3
Q3
Q3
Q3
Q3
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
TPS79328QDBVRQ1
TPS79330QDBVRQ1
SOT-23
SOT-23
3.2
TPS79333DBVRG4Q1 SOT-23
TPS79333DBVRQ1 SOT-23
TPS793475DBVRG4Q1 SOT-23
3.15
3.15
3.15
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
28-Jan-2014
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
TPS79301DBVRG4Q1
TPS79301DBVRQ1
TPS79318DBVRG4Q1
TPS79318DBVRQ1
TPS79325DBVRG4Q1
TPS79325DBVRQ1
TPS793285QDBVRQ1
TPS79328QDBVRQ1
TPS79330QDBVRQ1
TPS79333DBVRG4Q1
TPS79333DBVRQ1
TPS793475DBVRG4Q1
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
SOT-23
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
DBV
6
6
5
5
5
5
5
5
5
5
5
5
3000
1
182.0
182.0
182.0
182.0
182.0
182.0
182.0
203.0
203.0
182.0
182.0
182.0
182.0
182.0
182.0
182.0
182.0
182.0
182.0
203.0
203.0
182.0
182.0
182.0
20.0
20.0
20.0
20.0
20.0
20.0
20.0
35.0
35.0
20.0
20.0
20.0
3000
3000
3000
3000
3000
3000
3000
3000
3000
3000
Pack Materials-Page 2
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TI
TPS793475DBVR
ULTRALOW-NOISE, HIGH PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS IN NANOSTAR? WAFER CHIP SCALE AND SOT23
TI
TPS793475DBVR
4.75V FIXED POSITIVE LDO REGULATOR, 0.125V DROPOUT, PDSO5, GREEN, PLASTIC, SOT-23, 5 PIN
ROCHESTER
TPS793475DBVRG4
ULTRALOW-NOISE, HIGH PSRR, FAST RF 200-mA LOW-DROPOUT LINEAR REGULATORS IN NANOSTAR? WAFER CHIP SCALE AND SOT23
TI
TPS793475DBVRG4Q1
4.75V FIXED POSITIVE LDO REGULATOR, 0.125V DROPOUT, PDSO5, GREEN, PLASTIC, SOT-23, 5 PIN
TI
TPS793475QDBVRQ1
4.75V FIXED POSITIVE LDO REGULATOR, 0.125V DROPOUT, PDSO5, PLASTIC, SOT-23, 5 PIN
TI
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