AAT1149(2006) データシートの表示（PDF） - Advanced Analogic Technologies

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AAT1149
(Rev.:2006)

3MHz Fast Transient 400mA Step-Down Converter

Advanced Analogic Technologies 

AAT1149

3MHz Fast Transient

400mA Step-Down Converter

Electrical Characteristics1

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

Symbol Description

Conditions

Min

Step-Down Converter

VIN

VUVLO

Input Voltage

UVLO Threshold

VOUT

VOUT

IQ

ISHDN

ILIM

RDS(ON)H

RDS(ON)L

ILXLEAK

ΔVLinereg

VOUT

IOUT

TS

Output Voltage Tolerance

Adjustable 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

2.7

VIN Rising

Hysteresis

VIN Falling

1.8

IOUT = 0 to 400mA,

-3.0

VIN = 2.7V to 5.5V

1.0

No Load

VEN = GND

600

VIN = 5.5V, VLX = 0 to VIN,

VEN = GND

VIN = 2.7V to 5.5V

0.6V Output, No Load

TA = 25°C

591

0.6V Output

From Enable to Output

Regulation

FOSC

TSD

THYS

EN

Oscillator Frequency

Over-Temperature Shutdown Threshold

Over-Temperature Shutdown Hysteresis

TA = 25°C

VEN(L)

VEN(H)

IEN

Enable Threshold Low

Enable Threshold High

Input Low Current

1.4

VIN = VOUT = 5.5V

-1.0

Typ

100

45

0.45

0.40

0.1

600

70

3.0

140

15

Max Units

5.5 V

2.7 V

mV

V

3.0 %

VIN

V

70 μA

1.0 μA

mA

Ω

Ω

1

μA

%/V

609 mV

0.2 μA

μs

MHz

°C

°C

0.6 V

V

1.0 μA

1. The AAT1149 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

1149.2006.11.1.0

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