CAT6202VP2.GT3 [ONSEMI]
500 mA / 13 V Adjustable CMOS LDO Regulator; 500毫安/ 13 V可调式CMOS LDO稳压器
| 型号： | CAT6202VP2.GT3 |
| 厂家： | 
ONSEMI |
| 描述： | 500 mA / 13 V Adjustable CMOS LDO Regulator |
| 文件： | 总10页 (文件大小：149K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CAT6202
500 mA / 13 V Adjustable
CMOS LDO Regulator
Description
The CAT6202 is a 13 V rated 500 mA CMOS low dropout regulator
that provides fast response time to load current and line voltage
changes in an automotive environment.
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CAT6202 features a low R P−channel pass element with internal
ON
control circuitry which prevents reverse current flow should the
voltage at V
exceed V as in the case of the car’s battery voltage
OUT
IN
accidentally being applied to V
.
OUT
TDFN−8
Thermal protection and current limiting circuitry combine to protect
the pass device against faults and abuse. Current limiting is user
controlled through a single resistor to ground. A fault output (FLT)
provides an alert should an over−current event or thermal shutdown
occur.
VP2 SUFFIX
CASE 511AK
PIN CONNECTIONS
CAT6202 comes on−line gracefully even though it may be driving
heavy capacitive loads thanks to built−in soft−start circuitry. Its output
VIN
FLT
EN
VOUT
VADJ
ILIM
1
is protected against accidental connection to voltages greater than V
and will not conduct current backwards into its supply.
IN
GND
BYP
CAT6202 is available in 8−pad 2 mm x 3 mm TDFN package.
TDFN−8
(Top View)
Features
• Guaranteed 500 mA Continuous Output Current
• Low Dropout Voltage of 250 mV Typical at 500 mA
• Input Voltage Range: 3.3 V to 13.5 V
• User Adjustable Output Voltage
MARKING DIAGRAMS
HKC
LAA
YM
G
• User Programmable Current Limit
• Fault Output to Indicate Under−voltage, Current Limiting or Thermal
Shutdown has Occurred
• Fault Blanking: 3 ms
HKC
L
AA
= CAT6202VP2−GT3
= Assembly Location
= Last Two Digits of
= Assembly Lot Number
= Production Year (Last Digit)
= Production Month (1−9, O, N, D)
= Pb−Free Microdot
• V
Withstands Battery Fault Voltages of up to 14 V
OUT
• Soft−Start Prevents Current Surges
• Stable with Ceramic Output Capacitor
Y
M
G
•
•
1.0% Output Voltage Initial Accuracy
2.0% Accuracy Over Temperature
• Thermal Protection
• 8 Pad TDFN Package
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
Compliant
© Semiconductor Components Industries, LLC, 2012
1
Publication Order Number:
October, 2012 − Rev. 0
CAT6202/D
CAT6202
V
V
VIN
VOUT
ILIM
IN
OUT
2.2 mF
1 mF
47 kW
CAT6202
VADJ
BYP
GND
10 nF
Figure 1. CAT6202 Typical Application
FLT
Bias Control
Current
Sensing
V
V
IN
OUT
Power PMOS
C
OUT
C
IN
I
LIM
Over Current
1.25 V Ref
R
EXT
−
R
R
1
+
−
V
ADJ
+
EN
Enable &
Soft Start
Error
2
Amplifier
BYP
GND
C
BYP
Figure 2. CAT6202 Functional Block Diagram
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2
CAT6202
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
Pin Name
VIN
Description
1
2
3
4
5
6
7
8
Supply voltage input
FLT
Fault indicator (active low)
Enable input (active high)
EN
BYP
A capacitor between BYP and GND controls the regulator’s turn−on speed and improves PSRR
GND
ILIM
Ground reference
Current limit control pin
Output voltage adjustment
LDO Output Voltage
VADJ
VOUT
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating
Value
Unit
V
V
, V
0 to 16
IN
OUT
All other pins
−0.3 to +6.0
V
Junction Temperature, T
+150
_C
mW
_C
_C
V
J
Power Dissipation, P
Internally Limited (Note 1)
D
Storage Temperature Range, T
−65 to +150
260
S
Lead Temperature (soldering, 5 sec.)
ESD Rating (Human Body Model)
ESD Rating (Machine Model)
1000
350
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. The maximum allowable power dissipation at any T (ambient temperature) is P
= (T
– T ) / θ . Exceeding the maximum allowable
A
Dmax
Jmax A JA
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
Table 3. RECOMMENDED OPERATING CONDITIONS (Note 2)
Parameter
Range
Unit
V
V
, V
3.3 to 13.5
0 to 6.0
−40 to +125
235
IN
OUT
All other pins
V
Junction Temperature Range, T
_C
_C/W
_C/W
J
Package Thermal Resistance (SOIC), θ
JA
Package Thermal Resistance (TDFN), θ
92
JA
2. The device is not guaranteed to work outside its operating rating.
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3
CAT6202
Pin Function
is defined as the current at which V
of its nominal value and should not be confused with I , the
short circuit current, measured at V
is still within 80%
OUT
SC
VIN is the supply pin for both the LDO’s operation and the
load the LDO is driving. It is recommended that a 1 mF
ceramic bypass capacitor be placed between the V pin and
ground in close proximity to the device. When using longer
connections to the power supply, C value can be increased
= 0 V, which is
OUT
typically 100 mA greater than I
.
LIM
IN
A resistor R
placed between I
and GND selects the
EXT
LIM
trip current according to a formula:
IN
without limit. The operating input voltage range is from
3.3 V to 13 V.
Current_Limit_Factor(CLF)
(eq. 1)
I
LIMIT + ILIMIT0 )
REXT
FLT is an active low open−drain output indicating one of 3
fault conditions:
I
is the built−in minimum current limit (typically
LIM0
150 mA), and CLF is a numerical value (typical 30,000
Volts) which relates the allowable load current to a
resistance value. The value of this resistor is determined by
the following equation:
1. Input under−voltage: V is below the intended
IN
output voltage
2. Over−current. Brief over−current events are
masked by a 3 ms time delay. CAT6202 will limit
current anytime the load tries to draw more than
the maximum allowed however reporting of this
event will occur only if the event lasts longer than
the delay timer. Events terminating before the
timer reaches its full count are ignored and the
timer is reset.
CLF(V)
ILIM(A) * ILIM0(A)
REXT(W) +
(eq. 2)
It is recommended that I
preferably 60%, higher than the maximum intended
continuous I
be set with at least 50%, and
LIM
.
OUT
Example: Set I
= 800 mA
LIMIT
3. Over−temperature shutdown has occurred.
30, 000 V
0.8 A * 0.15 A
REXT(W) +
+ 47 KW
(eq. 3)
EN is an active HIGH logic level input for switching the
regulator’s output between ON and OFF. A weak internal
pull down assures that if EN pin is left open, the circuit is
disabled.
VADJ is the output voltage control pin. A resistor divider
placed between VOUT and GND whose center point
connects to VADJ sets the LDO regulator’s output voltage.
Typical VADJ value is 1.25 V. The current through the
resistor divider can be anywhere between 10 mA and 1 mA.
The higher this current is, the lower the noise.
BYP controls the soft−start feature for the regulator. When
large capacitive loads are present at the regulator’s output,
enabling the regulator will produce large current surges on
the V supply line. To reduce these surges the regulator can
IN
VOUT is the LDO regulator output. A small 2.2 mF ceramic
bypass capacitor is required between VOUT and ground.
For better transient response, its value can be increased to
4.7 mF. This capacitor should be located near the device.
be turned on gently by connecting a capacitor between the
BYP pin and ground. The larger the capacitance value the
more slowly V
approaches its programmed value. The
OUT
table below gives a list of common capacitor values and their
resulting turn−on times. If the soft−start feature is not
desired, this pin should be left floating.
R1
R2
ǒ1 ) Ǔ
V
OUT + VADJ
(eq. 4)
Capacitance [nF]
t
ON
[ms]
VOUT is protected against short circuits and over−temp
operation by internal circuitry. In the event of an
over−current, the LDO behaves like a current source,
limiting current at the output. The maximum current
0
0.2
10
1
100
10
allowed is set by R , the resistor between ILIM and GND.
EXT
If the load attempts to draw more than the allowed current,
VOUT and IOUT decrease together and thus limit the total
power delivered.
VOUT is protected against the application of voltages
greater than VIN. For example, in automotive applications,
if CAT6202 is powering a remote load and damage occurs
to a wiring harness shorting a powered line, Battery + for
instance, to VOUT, CAT6202 will not be damaged by this
higher voltage being applied to VOUT.
GND is the ground reference for the LDO. The TDFN
package center metal pad is internally connected to GND. If
electrical contact is made with this pad, it should be to GND
and/or the ground plane of the PCB. Connection to the
ground plane enhances thermal conductivity drawing heat
out of the package and into the surrounding PCB.
ILIM stands for Current Limit and is the control input for
setting the point at which the current limit is invoked. I
LIM
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CAT6202
Table 4. ELECTRICAL CHARACTERISTICS
(V = V
+ 1 V, V = High, I
= 1 mA, C = 1 mF, C
= 2.2 mF, R
= 47 kW, ambient temperature of 25°C (over recommended
IN
OUT
EN
OUT
IN
OUT
EXT
operating conditions unless specified otherwise). Bold numbers apply for the entire junction temperature range.)
Symbol
Parameter
Input Voltage
Conditions
Min
3.3
Typ
Max
13.5
12.5
1.262
2.0
Unit
V
V
IN
V
Output Voltage
V
ADJ
OUT
V
ADJ
ADJ Voltage
1.238
1.250
V
mA
I
ADJ Input Current
Output Voltage Temp. Coefficient
Line Regulation
0.5
ADJ
TC
40
ppm/°C
%/V
OUT
V
V
+ 1.0 < V < 13 V
−0.2
−0.4
0.1
+0.2
+0.4
2.5
R−LINE
OUT
IN
V
Load Regulation
I
I
I
I
= 1 mA to 500 mA
= 500 mA
= 0 mA
1
%
mV
mA
R−LOAD
OUT
OUT
OUT
OUT
V
Dropout Voltage (Note 3)
Ground Current
250
100
160
350
150
300
2
DROP
I
GND
= 500 mA
< 0.4 V
I
Shutdown Ground Current
V
mA
GND−SD
EN
PSRR
Power Supply Rejection Ratio
f = 1 kHz, C
= 10 nF
62
52
dB
BYP
f = 20 kHz, C
= 10 nF
BYP
T
Turn−On Time
C
= 10 nF
700
800
650
30
ms
mA
mA
KV
ms
V
ON
BYP
OUT
OUT
OUT
I
Output short circuit current
Output current limit
Current Limit Factor
Fault Delay
V
V
V
< 0.8 V
= 0.8 V
< 0.8 V
700
600
24
1000
800
36
SC
I
(1 mA)
LIM
OUT
CLF
t
FD
1.5
3
6
V
Under voltage lockout threshold
3.1
IN−UVLO
ESR
R
OUT
equivalent series resistance
5
500
mW
ENABLE INPUT
V
Logic High Level
V
V
V
V
= 3.3 to 13 V
= 3.3 to 13 V
= 0.4 V
2
V
V
HI
LO
EN
IN
V
Logic Low Level
0.4
1
IN
I
Enable Input Current
0.15
3
mA
EN
EN
= V
5
IN
THERMAL PROTECTION
T
Thermal Shutdown
Thermal Hysteresis
140
10
°C
°C
SD
T
HYS
3. Dropout voltage is defined as the input−to−output differential at which the output voltage drops 2% below its nominal value. During test, the
input voltage stays always above the minimum 3.3 V. The given values are for V
= 7.5 V.
OUT
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5
CAT6202
TYPICAL CHARACTERISTICS (shown for 7.5 V output)
(V = 8.5 V, R = 5.1 kW, R = 1 kW, C = 1 mF, C
= 2.2 mF, C
= 10 nF, R = 47 kW,
EXT
IN
1
2
IN
OUT
BYP
FLT not connected, T = 25°C unless otherwise specified.)
A
8
7
6
5
4
3
2
7.50
I
= 500 mA
I
= 1 mA
OUT
OUT
7.45
7.40
7.35
7.30
1
0
0
0
0
2
4
6
8
10
12
14
8
9
10
11
12
13
14
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Figure 3. Dropout Characteristics
Figure 4. Line Regulation
7.50
7.45
7.40
1.26
1.25
1.24
V
= 8 V
IN
TEMP = 25°C
7.35
7.30
1.23
1.22
100
200
300
400
500
−25
0
25
50
75
100
125
OUTPUT LOAD CURRENT (mA)
TEMPERATURE (°C)
Figure 5. Load Regulation
Figure 6. Adjustable Voltage vs. Temperature
175
150
125
175
150
125
100
75
100
75
V
= 8.5 V
400
IN
100
200
300
500
−25
0
25
50
75
100
125
OUTPUT LOAD CURRENT (mA)
TEMPERATURE (°C)
Figure 7. Ground Current vs. Load Current
Figure 8. Ground Current vs. Temperature
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CAT6202
TYPICAL CHARACTERISTICS (shown for 7.5 V output)
(V = 8.5 V, R = 5.1 kW, R = 1 kW, C = 1 mF, C
= 2.2 mF, C
= 10 nF, R
= 47 kW,
IN
1
2
IN
OUT
BYP
EXT
FLT not connected, T = 25°C unless otherwise specified.)
A
300
250
200
150
100
200
175
150
125
100
75
50
V
= 0
OUT
50
0
R
= ∞
25
0
EXT
0
0
0
2
4
6
8
10
12
14
0
4
6
2
4
6
8
10
12
14
10
14
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Figure 9. Output Short−circuit Current vs.
Figure 10. Ground Current vs. Input Voltage
Input Voltage
2.00
1.75
12
10
8
1.50
1.25
1.00
6
4
2
0
0.75
0.50
2
4
6
8
10
12
14
5
6
7
8
9
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
Figure 11. Enable Threshold vs. Input Voltage
Figure 12. Fault Bar Voltage vs. Input Voltage
8
7
6
5
4
3
2
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
V
= 8 V
TEMP = 25°C
IN
V
= V = 8 V
EN
IN
1
0
0.25
0
100 200 300 400 500 600 700 800 900
OUTPUT CURRENT (mA)
7
8
9
10
11
12
13
OUTPUT VOLTAGE (V)
Figure 13. Output Voltage vs. Load Current
Figure 14. Output Current (Sink) vs. Output
Voltage
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CAT6202
TYPICAL CHARACTERISTICS (shown for 7.5 V output)
(V = 8.5 V, R = 5.1 kW, R = 1 kW, C = 1 mF, C
= 2.2 mF, C
= 10 nF, R
= 47 kW,
IN
1
2
IN
OUT
BYP
EXT
T = 25°C unless otherwise specified. All transient characteristics are generated using the evaluation board CAT6202EVAL1.)
A
Figure 15. Enable Turn−On (No Load)
Figure 16. Enable Turn−On (15 W Load)
Figure 17. Enable Operation (No Load)
Figure 18. Enable Operation (15 W Load)
Figure 19. Load Transient Response
(1 mA to 500 mA)
Figure 20. Fault Operation
(VIN = 7 V and 15 W Load)
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CAT6202
PACKAGE DIMENSIONS
TDFN8, 2x3
CASE 511AK−01
ISSUE A
D
A
e
b
E2
E
PIN#1
IDENTIFICATION
A1
PIN#1 INDEX AREA
D2
L
TOP VIEW
SIDE VIEW
BOTTOM VIEW
SYMBOL
MIN
0.70
0.00
0.45
NOM
MAX
0.80
0.05
0.65
A
A1
A2
A3
b
0.75
0.02
A2
0.55
0.20 REF
0.25
A3
0.20
1.90
1.30
2.90
1.20
0.30
2.10
1.50
3.10
1.40
D
2.00
FRONT VIEW
D2
E
1.40
3.00
E2
e
1.30
0.50 TYP
0.30
L
0.20
0.40
Notes:
(1) All dimensions are in millimeters.
(2) Complies with JEDEC MO-229.
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CAT6202
Table 5. ORDERING INFORMATION
Specific
Device Marking
Lead
Finish
†
Device Order Number
Package Type
Shipping
CAT6202VP2−GT3
HKC
TDFN−8
NiPdAu
Tape & Reel, 3,000 Units / Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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CAT6202/D
相关型号：
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