MIC5307-1.8YD5-TR [MICROCHIP]
1.8V FIXED POSITIVE LDO REGULATOR, 0.25V DROPOUT, PDSO5;
| 型号： | MIC5307-1.8YD5-TR |
| 厂家： | 
MICROCHIP |
| 描述： | 1.8V FIXED POSITIVE LDO REGULATOR, 0.25V DROPOUT, PDSO5 光电二极管 输出元件 调节器 |
| 文件： | 总9页 (文件大小：203K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MIC5307
300mA Micropower µCap
Baseband LDO
General Description
Features
The MIC5307 is a micropower, µCap low dropout regulator
designed for optimal performance where smaller packages
are required. It is capable of sourcing 300mA of output
current while only drawing 20µA of operating current. This
high performance LDO offers fast transient response and
good PSRR while consuming a minimum of current.
• Input voltage range: 2.4V to 5.5V
• Ultra-low IQ: Only 20µA operating current
• Stable with ceramic output capacitor
• Low dropout voltage of 120mV @ 300mA
• High output accuracy
– ±1.0% initial accuracy
– ±2.0% over temperature
Ideal for battery operated applications; the MIC5307 offers
1% initial accuracy, extremely low dropout voltage and is
equipped with a TTL logic compatible enable pin. The
MIC5307 can be put into a zero-off-mode current state,
drawing no current when disabled.
• Thermal Shutdown Protection
• Current Limit Protection
The MIC5307 is a µCap design, operating with very small
ceramic output capacitors for stability, reducing required
board space and component cost.
Applications
• Digital Logic Power Supply
• Stand-by power supply
• Cellular phones
The MIC5307 is available in fixed output voltages in the
Thin SOT23-5 package and the 6-pin 2mm x 2mm Thin
MLF® package.
• PDAs
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
• Portable electronics
• Notebook PCs
Typical Application
Ground Pin Current
vs. Temperature
26
24
MIC5307
22
20
18
16
14
12
10
8
300mA
100µA
VIN
EN
VOUT
GND
2.2µF
1µF
6
4
2
V
= V
+ 1V
IN
OUT
V
= 2.8V
OUT
C
= 2.2µF
OUT
0
20 40 60 80
TEMPERATURE (°C)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
M9999-082407-B
August 2007
Micrel, Inc.
MIC5307
Block Diagram
VIN
EN
VOUT
Quick-
Start
VREF
Error
Amp
Thermal
Shutdown
Current
Limit
GND
M9999-082407-B
August 2007
2
Micrel, Inc.
MIC5307
Ordering Information(1)
Part Number
MIC5307-1.5YD5
MIC5307-1.8YD5
MIC5307-2.8YD5
MIC5307-3.0YD5
MIC5307-2.8YMT
Notes
Marking Code
Voltage
1.5V
Temperature Range
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
–40°C to +125°C
Package
5-Pin TSOT23
Lead Finish
QQ15*
QQ18*
QQ28*
QQ30*
Q28**
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
1.8V
5-Pin TSOT23
2.8V
5-Pin TSOT23
3.0V
5-Pin TSOT23
6-Pin 2mm x 2mm Thin MLF®
2.8V
*
Underbar ( _ ) symbol may not be to scale.
** 2x2mm Thin MLF® is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
Pin Configuration
GND
2
EN
3
VIN
1
6
5
4
NC
EN
GND
VIN
1
2
3
NC
4
5
VOUT
N/C
OUT
MIC5307-x.xYD5
5-Pin Thin SOT23 (D5)
MIC5307-x.xYMT
6-Pin 2mm x 2mm Thin MLF® (MT)
Pin Description
Pin Number
TSOT23
Pin Number
Thin MLF®
Pin Name Pin Function
1
2
3
4
5
–
3
2
1
5
4
6
VIN
GND
EN
Supply Input
Ground
Enable Input. Active High. High = on, low = off. Do not leave floating
NC
No Connect
Output Voltage
No Connect
VOUT
NC
M9999-082407-B
August 2007
3
Micrel, Inc.
MIC5307
Absolute Maximum Ratings(1)
Operating Ratings(2)
Supply Voltage (VIN)............................................... 0V to 6V
Enable Input Voltage (VEN)..................................... 0V to 6V
Power Dissipation (PD)(3) ...........................Internally Limited
Junction Temperature (TJ) ........................–40°C to +125°C
Lead Temperature (soldering, 5sec.)......................... 260°C
Storage Temperature (Ts) .........................–65°C to +150°C
ESD Rating(4)..................................................................2kV
Supply voltage (VIN) ....................................... 2.4V to +5.5V
Enable Input Voltage.............................................. 0V to VIN
Junction Temperature (TJ) ........................–40°C to +125°C
Thermal Resistance
TSOT23-5 (θJA)................................................235°C/W
2x2 Thin MLF-6 (θJA).........................................93°C/W
Electrical Characteristics(5)
VIN = VOUT + 1.0V; COUT = 2.2µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted.
Parameter
Condition
Min
–1
Typ
Max
Units
Output Voltage Accuracy
Variation from nominal VOUT
Variation from nominal VOUT; –40°C to +125°C
VIN = VOUT +1V to 5.5V
+1
+2
0.3
0.5
1
%
%
–2
Line Regulation
Load Regulation
Dropout Voltage(4)
0.01
0.5
%/V
%/V
%
IOUT = 100µA to 300mA
IOUT = 50mA
1.5
%
20
40
mV
mV
mV
mV
µA
I
I
OUT = 100mA
OUT = 150mA
60
120
18
IOUT = 300mA
250
Ground Pin Current
IOUT = 0mA to 150mA; VIN = 5.5V
IOUT = 0mA to 300mA; VIN = 5.5V
VEN < 0.2V; VIN = 5.5V
20
30
1
µA
Ground Pin Current in Shutdown
Ripple Rejection
0.01
62
µA
f = 10Hz to 1kHz; COUT = 2.2µF; IOUT = 300mA
f = 20kHz; COUT = 2.2µF; IOUT = 300mA
VOUT = 0V
dB
35
dB
Current Limit
350
500
160
20
800
mA
°C
Thermal Shutdown
Thermal Shutdown Hysteresis
Output Voltage Noise
Enable Input
°C
COUT = 2.2µF; 10Hz to 100kHz
80
µVRMS
Enable Input Voltage
Logic Low
Logic High
VIL < 0.2V
VIH > 1.0V
COUT = 2.2µF
0.2
V
V
1.0
Enable Input Current
0.01
0.01
270
1
1
µA
µA
µs
Turn-on Time(6)
Notes:
500
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T (ambient temperature) is P
A
= T
– T / θ . Exceeding the maximum allowable
J(max) A JA
D(max)
power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown.
4. Devices are ESD sensitive. Handling precautions recommended.
5. Specification for packaged product only.
6. Turn-on time is measured from VEN = 1V of the positive edge of the enable signal to 90% of the rising edge of the output voltage of the regulator.
M9999-082407-B
August 2007
4
Micrel, Inc.
MIC5307
Typical Characteristics
Ground Pin Current
vs. Output Current
Ground Pin Current
vs. Supply Voltage
Ground Pin Current
vs. Temperature
26
26
24
22
20
18
16
14
12
10
8
26
24
22
20
18
16
14
12
10
8
24
22
20
18
16
14
12
10
8
300mA
300mA
100µA
100µA
6
4
2
0
6
6
4
2
0
V
= V
+ 1V
IN
OUT
V
= V
+ 1V
IN
OUT
4
2
0
V
= 2.8V
OUT
V
= 2.8V
V
C
= 2.8V
OUT
OUT
OUT
C
= 2.2µF
OUT
C
= 2.2µF
= 2.2µF
OUT
20 40 60 80
TEMPERATURE (°C)
0
50 100 150 200 250 300
OUTPUT CURRENT (mA)
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
Power Supply
Rejection Ratio
Dropout Voltage
vs. Output Current
Dropout Voltage
vs. Temperature
-80
-70
-60
-50
-40
-30
-20
-10
0
150
125
100
75
160
140
120
100
80
V
= 2.8V
OUT
150mA
C
OUT
= 2.2µF
300mA
300mA
50mA
150mA
100mA
50mA
60
50
40
V
= V
+ 1V
IN
OUT
= 2.8V
25
V
C
= 2.8V
= 2.2µF
V
OUT
20
OUT
OUT
100µA
C
= 2.2µF
OUT
0
0
20 40 60 80
TEMPERATURE (°C)
0.1
1
10
100
1,000
0
50 100 150 200 250 300
OUTPUT CURRENT (mA)
FREQUENCY (kHz)
Output Voltage
vs. Output Current
Current Limit
vs. Input Voltage
Output Voltage
vs. Temperature
3.0
2.9
2.8
2.7
2.6
600
580
560
540
520
500
480
460
440
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
V
= V
+ 1V
IN
OUT
V
= V
+ 1V
IN
OUT
V
= 2.8V
OUT
V
= 2.8V
OUT
V
= 2.8V
C
= 2.2µF
OUT
OUT
C
= 2.2µF
OUT
C
= 2.2µF
I
= 100µA
OUT
OUT
20 40 60 80
TEMPERATURE (°C)
0
50 100 150 200 250 300
OUTPUT CURRENT (mA)
3.0
3.5
4.0
4.5
5.0
5.5
INPUT VOLTAGE (V)
Output Voltage
Output Noise
vs. Supply Voltage
Spectral Density
3.2
2.8
2.4
2.0
1.6
1.2
0.8
0.4
0
10
1
100µA
300mA
0.1
V
= 3.8V
= 2.8V
= 2.2µF
0.01
0.001
IN
V
OUT
V
= 2.8V
= 2.2µF
OUT
C
OUT
C
OUT
0.01 0.1
1
10
100 1,000
0
1
2
3
4
5
6
FREQUENCY (kHz)
SUPPLY VOLTAGE (V)
M9999-082407-B
August 2007
5
Micrel, Inc.
MIC5307
Functional Characteristics
Enable Turn-On
Load Transient Response
300mA
V
V
= V
+ 1V
OUT
IN
= 2.8V
OUT
C = 2.2µF
OUT
V
V
= V
+ 1V
OUT
IN
= 2.8V
OUT
C
= 2.2µF
OUT
Time (10µs/div)
Time (100µs/div)
Line Transient Response
5V
4V
V
V
= V
+ 1V
OUT
IN
= 2.8V
OUT
C
= 2.2µF
OUT
Time (200µs/div)
M9999-082407-B
August 2007
6
Micrel, Inc.
MIC5307
Because this device is CMOS and the ground current is
typically < 50µA over the load range, the power dissipa-
tion contributed by the ground current is < 1% and can
be ignored for this calculation.
Application Information
Input Capacitance
A 1µF capacitor should be placed from IN to GND if
there is more than 10 inches of wire between the input
and the ac filter capacitor or if a battery is used as the
input.
PD = (3.8V – 2.8V) ⋅ 300mA
PD = 0.3W
To determine the maximum ambient operating tempera-
ture of the package, use the junction-to-ambient thermal
resistance of the device and the following basic
equation:
Output Capacitance
The MIC5307 requires an output capacitor of 2.2µF or
greater to maintain stability. The design is optimized for
use with low-ESR ceramic chip capacitors. High ESR
capacitors may cause high frequency oscillation. The
output capacitor can be increased, but performance has
been optimized for a 2.2µF ceramic output capacitor and
does not improve significantly with larger capacitance.
TJ(max) – TA
PD(max) =
JA
TJ(max) = 125
°
C, the maximum junction temperature of
C/W
the die JA thermal resistance = 235
θ
°
X7R/X5R dielectric-type ceramic capacitors are
Table 1 shows junction-to-ambient thermal resistance for
the MIC5307 in the TSOT23-5 package.
recommended
because
of
their
temperature
performance. X7R-type capacitors change capacitance
by 15% over their operating temperature range and are
the most stable type of ceramic capacitors. Z5U and
Y5V dielectric capacitors change value by as much as
50% and 60%, respectively, over their operating
temperature ranges. To use a ceramic chip capacitor
with Y5V dielectric, the value must be much higher than
an X7R ceramic capacitor to ensure the same minimum
capacitance over the equivalent operating temperature
range.
θ
JA Recommended
Minimum Footprint
Package
TSOT23-5
235 C/W
°
Table 1. TSOT23-5 Thermal Resistance
Substituting PD for PD (max) and solving for the ambient
operating temperature will give the maximum operating
conditions for the regulator circuit. The junction-to-
ambient thermal resistance for the minimum footprint is
Enable
235°C/W, from Table 1. The maximum power dissipation
must not be exceeded for proper operation.
Forcing EN (enable/shutdown) high (>1V) enables the
regulator. EN is compatible with CMOS logic gates. If the
enable/shutdown feature is not required, connect EN
(pin 3) to IN (supply input, pin 1).
For example, when operating the MIC5307-2.8 at an
input voltage of 3.8V and 300mA load with a minimum
footprint layout, the maximum ambient operating
temperature TA can be determined as follows:
Current Limit
0.3W = (125°C - TA) / 235C°/W
TA = 54.5°C
There is overcurrent protection circuitry built into the
MIC5307. Even with the output grounded, current will be
limited to approximately 500mA. Further protection is
provided by thermal shutdown.
Therefore, a 2.8V application at 300mA of output current
can accept an ambient operating temperature of 89.8°C
in a TSOT23-5 package. For a full discussion of heat
sinking and thermal effects on voltage regulators, refer
to the “Regulator Thermals” section of Micrel’s Designing
with Low-Dropout Voltage Regulators handbook. This
information can be found on Micrel's website at:
Thermal Considerations
The MIC5307 is designed to provide 300mA of
continuous current in a very small package. Maximum
ambient operating temperature can be calculated based
on the output current and the voltage drop across the
part. Given that the input voltage is 3.8V, the output
voltage is 2.8V and the output current equals 300mA.
http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
The actual power dissipation of the regulator circuit can
be determined using the equation:
PD = (VIN – VOUT) IOUT + VIN IGND
M9999-082407-B
August 2007
7
Micrel, Inc.
MIC5307
Package Information
5-Pin Thin SOT23 (D5)
6-Pin 2mm x 2mm Thin MLF® (MT)
M9999-082407-B
August 2007
8
Micrel, Inc.
MIC5307
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its
use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product
can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant
into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A
Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully
indemnify Micrel for any damages resulting from such use or sale.
© 2006 Micrel, Incorporated.
M9999-082407-B
August 2007
9
相关型号：
MIC5307-1.8YD5TR
1.8V FIXED POSITIVE LDO REGULATOR, 0.25V DROPOUT, PDSO5, LEAD FREE, MO-193C, TSOT-23, 5 PIN
MICREL
MIC5307-2.8YD5
2.8V FIXED POSITIVE LDO REGULATOR, 0.25V DROPOUT, PDSO5, LEAD FREE, MO-193C, TSOT-23, 5 PIN
ROCHESTER
MIC5307-2.8YMT
2.8 V FIXED POSITIVE LDO REGULATOR, 0.25 V DROPOUT, PDSO6, 2 X 2 MM, GREEN, MLF-6
ROCHESTER
MIC5308-1.2YD6
1.2 V FIXED POSITIVE LDO REGULATOR, 0.15 V DROPOUT, PDSO6, MO-193, TSOT-23, 6 PIN
ROCHESTER
©2020 ICPDF网 联系我们和版权申明