3A Low Voltage-Low Dropout CMOS Regulator
Key Features
n
Low-Dropout Regulator Supports Input
Voltages Down to 1.4V
n
Output Voltage Available in 0.9V,1.0V, 1.2V,
1.5V, 1.8V, 2.5V,2.8V,2.85V,3.0V,3.3V
n
Low Dropout Voltage:300mV@ 3A
n
Stable with a Ceramic Output Capacitor
of 1.0uF or Higher
n
Low Quiescent Current
n
Current Limit
n
Over Temperature Shutdown
n
Short Circuit Current Protection
n
Low Temperature Coefficient
n
Standard TO-263
,
TO-220 and SOP-8
(Exposed Pad) Packages
n
Pb-Free Package
PAM3130
General Description
The PAM3130 is a 3A CMOS LDO regulator that
features a low quiescent current, ultra low input,
output, and dropout voltages, as well as over
temperature protection. It is available in TO-263 ,
TO-220 and SOP-8(Exposed Pad) packages. The
fixed output voltage of the PAM3130 is set at the
factory and trimmed to ± 2.0%. The PAM3130 is
stable with a ceramic output capacitor of 1.0uF
or higher.
This family of regulators can provide either a
stand-alone power supply solution or act as a post
regulator for switch mode power supplies. They
are particularly well suited for applications
requiring low input and output voltages.
Applications
n
DSP, FPGA, and Microprocessor Power
Supplies
n
1.2V Core Voltage for DSPs
n
SATA Power Supply
n
LCD TV/ Monitors
n
Wireless Devices
n
Communication Devices
n
Portable Electronics
n
Post Regulator for SMPS
Typical Application
R
P
10K
IN
VIN
VOUT
OUT
IN
C
O
2.2uF
PAM3130
C
IN
4.7uF
GND
VIN
EN
C1
4.7uF
GND
PAM3130
PWRGD
VOUT
OUT
C2
2.2uF
SENSE
Power Analog Microelectronics
,
Inc
www.poweranalog.com
08/2007
1
3A Low Voltage-Low Dropout CMOS Regulator
Block Diagram
IN
OUT
IN
OUT
PAM3130
OverCurrent
Shutdown
Thermal
Shutdown
OverCurrent
Shutdown
Thermal
Shutdown
EN
R1
AMP
AMP
R1
R2
R2
GND
GND
Pin Configuration & Marking Information
Top View
TO-220
P3130 V
F AT Y W
V: Voltage Code
F: Internal Code
A: Assembly Code
T: Testing Code
Y: Year
W: Weekly
1
2
3
Pin Number
1
2
3
Name
VIN
GND
VOUT
Function
Input
Ground(Heatsink)
Output
Power Analog Microelectronics
,
Inc
www.poweranalog.com
08/2007
2
3A Low Voltage-Low Dropout CMOS Regulator
Pin Configuration & Marking Information
(continued)
Top View
TO-263-5L
PAM3130
P3130 V
F AT Y W
V: Voltage Code
F: Internal Code
A: Assembly Code
T: Testing Code
Y: Year
W: Weekly
1
2
3 4 5
Pin Number
1
2
3
4
5
Name
VIN
EN
GND
PWRGD/SENSE
VOUT
Function
Input
Enable Pin
Ground（Heatsink）
Power Good/Sense
Output
Top View
SOP-8(EPD)
8
7
6
5
P3130 V
F AT Y W
V: Voltage Code
F: Internal Code
A: Assembly Code
T: Testing Code
Y: Year
W: Weekly
1
2
3
4
Name
GND
VIN
EN
GND
PWRGD
SENSE
VOUT
GND
Function
Ground
Input
Enable Pin
Ground
Power Good
Sense
Output
Ground
Pin Number
1
2
3
4
5
6
7
8
Power Analog Microelectronics
,
Inc
www.poweranalog.com
08/2007
3
3A Low Voltage-Low Dropout CMOS Regulator
Absolute Maximum Ratings
PAM3130
These are stress ratings only and functional operation is not implied
.
Exposure to absolute
maximum ratings for prolonged time periods may affect device reliability
.
All voltages are with
respect to ground
.
Input Voltage...............................................4.0V
Output Pin Voltage.....................-0.3V to V
IN
+0.3V
Operation Temperature Range........... -40
℃
to 85
℃
Operation Junction Temperature...... -40
℃
to 125
℃
Maximum Output Current......................P
D
/(V
IN
-V
O
)
Storage Temperature..................... -65
℃
to 150
℃
Maximum Junction Temperature..................150
℃
Soldering Temperature.......................300
℃
, 5sec
Recommended Operating Conditions
Supply Voltage Range.......................1.4V to 3.6V
Operation Temperature Range...........-40
℃
to 85
℃
Junction Temperature Range.......... -40
℃
to 125
℃
Thermal Information
Parameter
Thermal Resistance
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Symbol
θ
JC
Package
TO-263
TO-220
SOP-8
TO-263
θ
JA
TO-220
SOP-8
TO-263
Internal Power Dissipation
P
D
TO-220
Maximum
7
7
90
60
50
11
2800
3000
Unit
℃/W
mW
Power Analog Microelectronics
,
Inc
www.poweranalog.com
08/2007
4
3A Low Voltage-Low Dropout CMOS Regulator
Electrical Characteristic
V
IN
= V
O
+0.5V, T
A
=25
O
C, C
IN
=4.7uF, C
O
=2.2uF, unless otherwise noted.
Parameters
Input Voltage Range
Output Voltage
Accuracy
Symbol
V
IN
Vo
Io=100mA
Vo=0.9V
I
O
=500mA
Dropout Voltage
V
DROP
I
O
=3.0A
Vo=1.0V
2.5V>Vo≥1.2V
Vo≥2.5V
Vo=0.9V
Vo=1.0V
2.5V>Vo≥1.2V
Vo≥2.5V
Short Circuit Current
Output Current
Quiescent Current
Ground Pin Current
I
SC
I
O
I
Q
I
GND
Io=0mA
Io=1mA to 3.0A
Vo≤2.5V,Io=10mA
Line Regulation
LNR
V
IN
=Vo+0.5V to Vo+1.5V
Vo>2.5V,Io=10mA
V
IN
=3.3V to 3.6V
Load Regulation
Over Temperature
Shutdown
Over Temperature
Hysteresis
Temperature Coefficient
Power Supply Ripple
Rejection
Output Noise
LDR
OTS
OTH
TC
f=100Hz
PSRR
Vn
Io=100mA, Vo=1.5V f=1KHz
f=10KHz
f=10Hz to 100kHz
Io=1mA to 3.0A,V
IN
=Vo+0.5V
0.5
150
50
40
55
55
35
40
uVrms
dB
2
%/A
℃
℃
ppm/℃
0.5
1.0
%/V
Vo < 0.3V
3.0
90
Test Conditions
MIN
Note 1
-2
330
220
50
40
500
400
350
300
1.0
Note 2
150
1.0
A
A
uA
mA
TYP
MAX
3.6
2
500
400
200
150
mV
UNITS
V
%
PAM3130
Note1: The minimum input voltage ( V
IN(MIN)
) of the PAM3130 is determined by output voltage and dropout
voltage. The minimum input voltage is defined as :
V
IN(MIN)
=V
O
+V
drop
Note 2: Output current is limited by P
D
, maximum I
O
=P
D
/( V
IN(MAX)
-V
O
).
Power Analog Microelectronics
,
Inc
www.poweranalog.com
08/2007
5
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