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PDF PAM3101 Data sheet ( Hoja de datos )
| Número de pieza | PAM3101 | |
| Descripción | 300mA High PSRR Low Dropout CMOS Linear Regulator | |
| Fabricantes | Power Analog Micoelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PAM3101 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Features
n Low Dropout Voltage: 180mV@300mA
www.datashe(eVt4Ou=.c3om.3V)
n Output Voltage Accuracy within ±2%
n Quiescent Current:65μA Typ.
n High PSRR: 70dB@1kHz
n Excellent Line and Load Regulation
n Fast Response
n Current Limiting
n Short Circuit Protection
n Low Temperature Coefficient
n Shutdown Current:0.5μA
n Thermal Shutdown
n Space Saving Package: SOT-23 , SOT-89
and SC70
n Pb-Free Package
Applications
n Cordless Phones
n Cellular Phones
n Bluetooth Earphones
n Digital Cameras
n Portable Electronics
n WLANs
n MP3 Players
Typical Application
IN
VIN VOUT
OUT
PAM3101
EN GND BYP
CIN
1μF
CBYP
10nF
CO
2.2μF
IN VIN VOUT
PAM3101
GND
CIN
1μF
OUT
CO
2.2μF
General Description
The PAM3101 series of positive voltage linear
regulators feature low quiescent current (65μA
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 2.2μF
or greater.
Block Diagram
VIN
OverCurrent
Shutdown
Thermal
EN Protection
BYP
Amp
Bandgap
VOUT
GND
Power Analog Microelectronics,Inc
www.poweranalog.com
1
09/2008 Rev 1.4
1 page  
PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Electrical Characteristic
V =IN VO+1V, TA= 25°C, C =IN 1μF, CO= 2.2μF, unless otherwise noted
www.dPaAtaRshAeMetE4uT.cEoRm
SYMBOL Test Conditions
Input Voltage
Output Voltage Accuracy
VIN
Vo Io=1mA
Output Current
IO
Vo=1.5V
Dropout Voltage
Vdrop
Io =300mA
Vo=1.8V
2.5V£Vo<3.3V
Vo³3.3V
Ground Current
Quiescent Current
IGND Io=1mA to 300mA
IQ Io=0mA
Io=1mA, Vo<2V,
Line Regulation
LNR
VIN = 2.8V to 3.8V
Io=1mA, 2V£Vo<3.3V,
VIN = Vo+0.5V to Vo+1V
Io=1mA, Vo³3.3V,
Load Regulation
LDR
VIN=Vo+0.5V to Vo+1V
Io=1mA to 300mA, Vo³2V
Io=1mA to 300mA, Vo<2V
Temperature Coefficient
Tc Io=1mA
Over Temperature Shutdown
OTS Io=1mA
Over Temperature Hysteresis
OTH Io=1mA
Io=100mA
f=100Hz
Power Supply Ripple Rejection
PSRR
CBYP=10nF
Vo=3.3V
f=1kHz
Output Noise
EN Input High Threshold
EN Input Low Threshold
Shutdown Current
Vn f =10Hz to 100kHz, CBYP=10nF
VIH VIN=2.5V to 5V
VIL VIN=2.5V to 5V
ISD VEN=0V
MIN TYP
Note 1
-2
300
1150
850
370
180
70
65
-0.15 0.1
-0.1 0.03
-0.4 0.2
-2 1
30
40
150
30
70
65
50
1.5
0.01
MAX UNITS
5.5 V
2%
Note 2 mA
1400
1100
450
mV
230
90 μA
90 μA
0.15
0.1 %/V
0.4
2%
60 mV
ppm/ OC
OC
OC
dB
μVrms
V
0.3 V
1 μA
Note1: The minimum input voltage (V )IN(MIN) of the PAM3101 is determined by output voltage and dropout
voltage. The minimum input voltage is defined as:
V =V +VIN(MIN) O drop
Note 2: Output current is limited by PD, maximum IO=PD/(V -IN(MAX) VO).
Power Analog Microelectronics,Inc
www.poweranalog.com
5
09/2008 Rev 1.4
5 Page 
PAM3101
300mA High PSRR Low Dropout CMOS Linear Regulator
Typical Performance Characteristics
www.datash1ee3t4. uP.cSomRR vs V-dropout@Vout=3.28V
0
-10
PSRR with bypass,
cap=10nF
-20
PSRR without
bypass cap
-30
-40
-50
-60
20 40 60 80 100 120 140 160 180 200 220
V-dropout (mV)
Audio P1r4e.cNisoioisne
+0
-20
-40
d
B -60
r
-80
A
-100
-120
-140
20
50 100 200
500 1k
Hz
2k
5k 10k 20k
Power Analog Microelectronics,Inc
www.poweranalog.com
11
09/2008 Rev 1.4
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet PAM3101.PDF ] | |
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