AAT1147 データシートの表示（PDF） - Analog Technology Inc

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AAT1147

High Efficiency, Low Noise, Fast Transient 400mA Step-Down Converter

Analog Technology Inc 

AAT1147

High Efficiency, Low Noise, Fast Transient

400mA Step-Down Converter

Electrical Characteristics1

TA = -40°C to +85°C, unless otherwise noted. Typical values are TA = 25°C, VIN = 3.6V.

Symbol Description

Step-Down Converter

VIN

Input Voltage

VUVLO

UVLO Threshold

VOUT

VOUT

IQ

ISHDN

ILIM

RDS(ON)H

RDS(ON)L

ILXLEAK

ΔVLINEREG

VOUT

IOUT

TS

FOSC

TSD

THYS

EN

VEN(L)

VEN(H)

IEN

Output Voltage Tolerance

Output Voltage Range

Quiescent Current

Shutdown Current

P-Channel Current Limit

High Side Switch On Resistance

Low Side Switch On Resistance

LX Leakage Current

Line Regulation

Out Threshold Voltage Accuracy

Out Leakage Current

Start-Up Time

Oscillator Frequency

Over-Temperature Shutdown

Threshold

Over-Temperature Shutdown

Hysteresis

Enable Threshold Low

Enable Threshold High

Input Low Current

Conditions

VIN Rising

Hysteresis

VIN Falling

IOUT = 0 to 400mA,

VIN = 2.7V to 5.5V

No Load

EN = AGND = PGND

VIN = 5.5V, VLX = 0 to VIN,

EN = GND

VIN = 2.7V to 5.5V

0.6V Output, No Load,

TA = 25°C

0.6V Output

From Enable to Output

Regulation

VIN = VOUT = 5.5V

Min Typ Max Units

2.7

5.5

V

2.7

V

100

mV

1.8

V

-3.0

3.0

%

0.6

VIN

V

160 300

µA

1.0

µA

600

mA

0.45

Ω

0.40

Ω

1

µA

0.1

%/V

591 600 609 mV

0.2

µA

150

µs

1.0 1.4 2.0 MHz

140

°C

15

°C

0.6

V

1.4

V

-1.0

1.0

µA

1. The AAT1147 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.

4

1147.2006.05.1.0

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