AP3418KTR-G1 datasheet(5/12 Pages) BCDSEMI

Part #	AP3418KTR-G1

Description	1.5A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter

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Manufacturer	BCDSEMI [BCD Semiconductor Manufacturing Limited]

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5 / 12 page

Data Sheet

1.5A, 1.4MHz High Efficiency Synchronous DC-DC Buck Converter

AP3418

Aug. 2012

Rev. 1. 2

BCD Semiconductor Manufacturing Limited

5

Electrical Characteristics

VIN=5V, TA=25ºC, unless otherwise specified.

Parameters

Symbol

Conditions

Min

Typ

Max

Unit

Input Voltage

VIN

2.5

5.5

V

Quiescent Current

IQ

VFB=0.65V

62

100

µA

Shutdown Supply Current

ISTBY

VEN=GND

0.1

1

µA

Reference Voltage

VREF

For Adjustable Output

Voltage

0.588

0.6

0.612

V

Feedback Bias Current

IFB_H

VFB=1V

-0.1

0.1

µA

IFB_L

VFB=0V

-0.1

0.1

PMOSFET RON

RDS(ON)_ P

ISW = 200mA

0.2

Ω

NMOSFET RON

RDS(ON) _N

ISW = -200mA

0.15

Ω

Switch Current Limit

ILIM

VFB=0.55V

1.8

2.3

A

EN Pin Threshold

VH

1.5

V

VL

0.4

UVLO Threshold

VUVLO

VIN Rising

2.3

V

UVLO Hysteresis

VHYS

0.2

Oscillator Frequency

FOSC

1.12

1.40

1.68

MHz

Max. Duty Cycle

DMAX

100

%

Min. Duty Cycle

DMIN

0

SW Leakage Current

ISW_H

VSW =0V

0.1

µA

ISW_L

VSW =5V

0.1

Soft-start Time

tSS

1

ms

Thermal Shutdown

TOTSD

160

ºC

Thermal

Shutdown

Hysteresis

THYS

20

ºC

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