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PAM3101DAB28数据手册
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Features
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Low Dropout Voltage: 180mV@300mA
(V =3.3V)
Output Voltage Accuracy within ±2%
Quiescent Current 65 A Typ.
High PSRR: 70dB@1kHz
Excellent Line and Load Regulation
Fast Response
Current Limiting
Short Circuit Protection
Low Temperature Coefficient
Thermal Shutdown
O
: μ
Shutdown Current 0.5 A
Space Saving Package: SOT-23 , SOT-89
and SC70
Pb-Free Package
Cordless Phones
Cellular Phones
Bluetooth Earphones
Digital Cameras
Portable Electronics
WLANs
MP3 Players
The PAM3101 series of positive voltage linear
regulators feature low quiescent current (65 A
Typ.) and low dropout voltage, making them ideal
for battery powered applications. Their high
PSRR make them useful in applications where
AC noise on the input power supply must be
suppressed. Space-saving SOT-23, SOT-89 and
SC70 packages are attractive for portable and
handheld applications. They have both thermal
shutdown and current limit features to prevent
device failure from extreme operating conditions.
They are stable with an output capacitor of 2.2 F
or greater.
: μ
μ
μ
Applications
General Description
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Block Diagram
Typical Application
PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
1
www.poweranalog.com
OUT
2.2 Fμ
IN
C
O
C
1F
IN
μ
VIN VOUT
GND
PAM3101
OUT
2.2 Fμ
IN
C
O
C
1F
IN
μ
C
10nF
BYP
VIN VOUT
EN GND BYP
PAM3101
VIN
VOUT
GND
EN
BYP
Bandgap
OverCurrent
Shutdown
Amp
Thermal
Protection
09/2008 Rev 1.4
,Power Analog Microelectronics Inc
Pin Configuration & Marking Information
Top View
SOT23-3
3
12
AAVYW
2
Top View
SOT89-3
123
P3101V
XXXYW
AA: Product Code of PAM3101
V: Voltage Code
Y: Year
W: Week
X: Internal Code
Top View
SOT23-5
12 3
54
AAVYW
12 3
54
P3101V
XXXYW
Top View
SOT89-5
09/2008 Rev 1.4
,Power Analog Microelectronics Inc
www.poweranalog.com
Top View
SC70-3L
Top View
SC70-4L
Top View
SC70-5L
1
2
3
AAVYW
12
3
4
AAVYW
1
2
3
4
5
AAVYW
PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Pin Descriptions
Name Function
VIN Input
GND Ground
VOUT Output
EN Chip Enable (active high)
BYP Bypass Pin, need a 10nF capacitor connect to GND
NC No Connection
3
09/2008 Rev 1.4
,Power Analog Microelectronics Inc
www.poweranalog.com
Pin Configuration Available
Pin12345
GND VOUT VIN
VIN VOUT GNDSOT23-3
VOUT GND VIN
GND VIN VOUT
SOT89-3
VOUT GND VIN
SOT23-5 VIN GND EN BYP VOUT
SOT89-5 VOUT GND NC EN VIN
SC70-3L VIN VOUT GND
SC70-4L EN GND VOUT VIN
SC70-5L VIN GND EN BYP VOUT
PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Absolute Maximum Ratings
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...............................................6.6V
Output Current 300mA
Output Pin Voltage GND-0.3V to V +0.3V
Lead Soldering Temperature (5sec)....... 300
Storage Temperature 65 to 150
ESD Rating Class B
.........................................
............
....
.................-
............................................
IN
°
°°
C
CC
Recommended Operating Conditions
Max. Supply Voltage (for Max. duration of
30 minutes)................................................6.4V
Junction Temperature.................-40 to 125
°°CC
Ambient Temperature....................-40 C to 85 C
°°
Thermal Information
4
09/2008 Rev 1.4
,Power Analog Microelectronics Inc
www.poweranalog.com
Parameter Sym bo l Package Maxim um Unit
SOT-23 130
SOT-89 100Thermal Resistance (Junction to Case) θ
JC
SC70 TBD
°C/W
SOT-23 250
SOT-89 180Thermal Resistance (Junction to Ambient) θ
JA
SC70 300
°C/W
SOT-23 400
SOT-89 550
Internal Power Dissipation P
D
SC70 300
mW
PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
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