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| AAT3237 Datasheet, PDF (4/13 Pages) Advanced Analogic Technologies – 300mA MicroPower™ LDO with PowerOK | |||
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AAT3237
300mA MicroPower⢠LDO with PowerOK
Electrical Characteristics
VIN = VOUT(NOM) + 1V for VOUT options greater than 1.5V. VIN = 2.5V for VOUT ⤠1.5V. IOUT = 1mA, COUT = 2.2µF,
CIN = 1µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C.
Symbol
VOUT
IOUT
VDO
ISC
IQ
ISD
âVOUT/
VOUT*âVIN
âVOUT(line)
âVOUT(load)
VEN(L)
VEN(H)
IEN
VPOK
VPOKHYS
VPOK(OL)
IPOK
PSRR
TSD
THYS
eN
TC
Description
Output Voltage Tolerance
Output Current
Dropout Voltage 1, 2
Short-Circuit Current
Ground Current
Shutdown Current
Line Regulation 3
Dynamic Line Regulation
Dynamic Load Regulation
Enable Threshold Low
Enable Threshold High
Leakage Current on Enable Pin
POK Trip Threshold
POK Hysteresis
POK Output Voltage Low
POK Output Leakage Current
Power Supply Rejection Ratio
Over-Temperature Shutdown
Threshold
Over-Temperature Shutdown
Hysteresis
Output Noise
Output Voltage Temperature
Coefficient
Conditions
Min Typ Max Units
IOUT = 1mA to 300mA
TA = 25°C
TA = -40 to 85°C
-1.5
-2.5
1.5
%
2.5
VOUT > 1.2V
300
mA
IOUT = 300mA
400 600 mV
VOUT < 0.4V
600
mA
VIN = 5V, No Load, EN = VIN
70 125
µA
VIN = 5V, EN = 0V
1
µA
VIN = VOUT + 1 to 5.0V
0.09 %/V
VIN = VOUT + 1V to VOUT + 2V,
IOUT = 300mA, TR/TF = 2µs
IOUT = 1mA to 300mA, TR <5µs
VEN = 5V
VOUT Rising, TA = 25°C
ISINK = 1mA
VPOK < 5.5V, VOUT in Regulation
1kHz
IOUT = 10mA
10kHz
1MHz
5
60
1.5
90 94
1
65
45
42
mV
mV
0.6
V
V
1
µA
98 % of VOUT
% of VOUT
0.4
V
1
µA
dB
145
°C
12
°C
250
µVrms
22
ppm/°C
1. VDO is defined as VIN - VOUT when VOUT is 98% of nominal.
2. For VOUT < 2.1V, VDO = 2.5V - VOUT.
3. CIN = 10µF.
4
3237.2006.01.1.4
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