AAT1120 データシートの表示（PDF） - Skyworks Solutions

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AAT1120

500mA Step-Down Converter

Skyworks Solutions 

DATA SHEET

AAT1120

500mA 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

VIN

Input Voltage

VUVLO

UVLO Threshold

VOUT

VOUT

IQ

ISHDN

ILIM

RDS(ON)H

RDS(ON)L

ILXLEAK

VLinereg/

VIN

VFB

IFB

FOSC

TS

TSD

THYS

VEN(L)

VEN(H)

IEN

Output Voltage Tolerance2

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

Feedback Threshold Voltage Accuracy

FB Leakage Current

Oscillator Frequency

Startup Time

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 500mA, VIN = 2.7V to 5.5V

No Load

EN = GND

VIN = 5.5V, VLX = 0 to VIN

VIN = 2.7V to 5.5V

VIN = 3.6V

VOUT = 1.0V

From Enable to Output Regulation

VIN = VEN = 5.5V

Min

2.7

2.0

-3.0

0.6

0.591

1.4

-1.0

Typ

250

30

600

0.59

0.42

0.2

0.600

1.5

100

140

15

Max

5.5

2.6

3.0

VIN

1.0

1.0

0.609

0.2

0.6

1.0

Units

V

V

mV

V

%

V

μA

μA

mA





μA

%/V

V

μA

MHz

μs

°C

°C

V

V

μA

1. The AAT1120 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. Output voltage tolerance is independent of feedback resistor network accuracy.

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

4

201973B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 15, 2013

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