AAT1162_08 datasheet(4/18 Pages) ANALOGICTECH

Part #	AAT1162

Description	12V, 1.5A Step-Down DC/DC Converter

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Manufacturer	ANALOGICTECH [Advanced Analogic Technologies]

Direct Link	http://www.analogictech.com

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AAT1162

12V, 1.5A Step-Down DC/DC Converter

SwitchRegTM

PRODUCT DATASHEET

4

1162.2008.01.1.3

www .analogictech.com

AAT1162

12V, 1.5A Step-Down DC/DC Converter

SwitchRegTM

PRODUCT DATASHEET

4

1162.2008.01.1.3

www .analogictech.com

Electrical Characteristics1

4.0V < VIN < 13.2V. CIN = COUT = 22μF; L = 2.2 or 3.8μH, TA = -40°C to +85°C, unless otherwise noted. Typical values

are at TA = 25°C.

Symbol Description

Conditions

Min

Typ

Max Units

VIN

Input Voltage Range

4.0

13.2

V

VUVLO

Input Under-Voltage Lockout

Rising

4.0

V

Hysteresis

0.3

IQ

Supply Current

No Load

150

300

μA

ISHDN

Shutdown Current

VEN = GND

1

μA

VOUT

Output Voltage Range

0.6

0.94

VIN

V

VOUT

Output Voltage Accuracy

IOUT = 0A to 1.5A

-2.5

2.5

%

ΔVOUT/

VOUT/ΔVIN

Line Regulation

VIN = 4.5V to 13.2V

0.023 0.100

%/V

ΔVOUT/

IOUT

Load Regulation

VIN = 12V, VOUT = 5V, IOUT = 0A to 1.5A

0.4

%

VFB

Feedback Reference Voltage (adjustable version) No Load, TA = 25°C

0.59

0.60

0.61

V

IFBLEAK

FB Leakage Current

VOUT = 1.2V

Adjustable Version

0.2

μA

Fixed Version

2

FOSC

PWM Oscillator Frequency

0.6

0.8

1

MHz

Foldback Frequency

200

kHz

DC

Maximum Duty Cycle

94

%

TON

Minimum Turn-On Time

100

ns

TS

Soft-Start Time

200

ms

RDS(ON)H

P-Channel On Resistance

VIN = 12V

0.12

Ω

VIN = 6V

0.15

RDS(ON)L

N-Channel On Resistance

VIN = 12V

0.06

Ω

VIN = 6V

0.08

η

Efﬁciency

VIN = 12V, VOUT = 5V, IOUT = 1.5A

90

%

ILIM

PMOS Current Limit

4.0

6.0

A

ILXLEAK

LX Leakage Current

VIN = 13.2V, VLX = 0 to VIN

1

μA

TSD

Over-Temperature Shutdown Threshold

140

°C

THYS

Over-Temperature Shutdown Hysteresis

25

°C

VIL

EN Logic Low Input Threshold

0.4

V

VIH

EN Logic High Input Threshold

1.4

V

IEN

EN Input Current

VEN = 0V, VEN = 13.2V

-1.0

1.0

μA

1. The AAT1162 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.

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