AAT3238IJS-1.45-T1 datasheet(4/13 Pages) ANALOGICTECH

Part #	AAT3238IJS-1.45-T1

Description	300mA MicroPowerTM High Performance LDO Linear Regulator

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

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AAT3238

300mA MicroPowerTM High Performance LDO Linear Regulator

PowerLinearTM

PRODUCT DATASHEET

4

3238.2008.05.1.7

www .analogictech.com

AAT3238

300mA MicroPowerTM High Performance LDO Linear Regulator

PowerLinearTM

PRODUCT DATASHEET

4

3238.2008.05.1.7

www .analogictech.com

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

Units

VOUT

Output Voltage Tolerance

IOUT = 1mA to 300mA

TA = 25°C

-1.5

1.5

%

TA = -40 to 85°C

-2.5

2.5

IOUT

Output Current

VOUT > 1.2V

300

mA

VDO

Dropout Voltage2, 3

IOUT = 300mA

400

600

mV

ISC

Short-Circuit Current

VOUT < 0.4V

600

mA

IQ

Ground Current

VIN = 5V, No Load, EN = VIN

70

125

µA

ISD

Shutdown Current

VIN = 5V, EN = 0V

1

µA

∆VOUT/

VOUT*∆VIN

Line Regulation

VIN = VOUT + 1 to 5.0V

0.09

%/V

∆VOUT(line)

Dynamic Line Regulation

VIN = VOUT + 1V to VOUT + 2V, IOUT = 300mA,

TR/TF = 2µs

2.5

mV

∆VOUT(load) Dynamic Load Regulation

IOUT = 1mA to 300mA, TR < 5µs

60

mV

tENDLY

Enable Delay Time

BYP = Open

15

µs

VEN(L)

Enable Threshold Low

0.6

V

VEN(H)

Enable Threshold High

1.5

V

IEN

Leakage Current on Enable Pin

VEN = 5V

1

µA

PSRR

Power Supply Rejection Ratio

IOUT = 10mA, CBYP = 10nF

1kHz

67

dB

10kHz

47

1MHz

45

TSD

Over-Temperature Shutdown Threshold

145

°C

THYS

Over-Temperature Shutdown Hysteresis

12

°C

eN

Output Noise

50

µVrms

TC

Output Voltage Temperature Coefﬁcient

22

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 correla-

tion 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.

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