AAT3238(2006) 查看數據表（PDF） - Advanced Analogic Technologies

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AAT3238
(Rev.:2006)

300mA MicroPower™ High Performance LDO Linear Regulator

Advanced Analogic Technologies 

AAT3238

300mA MicroPower™

High Performance LDO Linear Regulator

Electrical Characteristics1

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 Description

Conditions

Min Typ Max

VOUT

Output Voltage Tolerance

IOUT = 1mA to 300mA

TA = 25°C

-1.5

TA = -40 to 85°C -2.5

1.5

2.5

IOUT

Output Current

VOUT > 1.2V

300

VDO

Dropout Voltage2, 3

IOUT = 300mA

400 600

ISC

Short-Circuit Current

VOUT < 0.4V

600

IQ

Ground Current

VIN = 5V, No Load, EN = VIN

70 125

ISD

Shutdown Current

VIN = 5V, EN = 0V

1

ΔVOUT/

VOUT*ΔVIN

Line Regulation

VIN = VOUT + 1 to 5.0V

0.09

ΔVOUT(line) Dynamic Line Regulation

VIN = VOUT + 1V to VOUT + 2V,

IOUT = 300mA, TR/TF = 2µs

2.5

ΔVOUT(load) Dynamic Load Regulation

IOUT = 1mA to 300mA, TR < 5µs

60

tENDLY

Enable Delay Time

BYP = Open

15

VEN(L)

Enable Threshold Low

0.6

VEN(H)

Enable Threshold High

1.5

IEN

Leakage Current on Enable Pin VEN = 5V

1

1kHz

67

PSRR Power Supply Rejection Ratio IOUT = 10mA, CBYP = 10nF 10kHz

47

1MHz

45

TSD

Over-Temperature Shutdown

Threshold

145

THYS

Over-Temperature Shutdown

Hysteresis

12

eN

Output Noise

50

TC

Output Voltage Temperature

Coefficient

22

Units

%

mA

mV

mA

µA

µA

%/V

mV

mV

µs

V

V

µA

dB

°C

°C

µVrms

ppm/°C

1. The AAT3238 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured

by design, characterization, and correlation with statistical process controls.

2. VDO is defined as VIN - VOUT when VOUT is 98% of nominal.

3. For VOUT < 2.1V, VDO = 2.5V - VOUT.

4

3238.2006.11.1.6

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