AP1605SL datasheet(3/6 Pages) ANACHIP

Part #	AP1605SL

Description	PWM/PFM Dual-mode Step-Down Switching Regulator

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Manufacturer	ANACHIP [Anachip Corp]

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AP1605

PWM/PFM Dual-mode Step-Down Switching Regulator

Anachip Corp.

www.anachip.com.tw

Rev. 1.1 Jan 18, 2005

3/6

Electrical Characteristics (VIN = 5V, T

a=25°C, unless otherwise specified)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

VIN

Input Voltage

AP1605 Series

2.5

--

7

V

VREF

Internal Reference Voltage

1.1625

1.2

1.2375

V

VUVLO

UVLO Voltage

Voltage required to maintain

VOUT

--

2.2

V

MAXDTY Maximum Duty Ratio

100

--

%

PFMDTY PFM Duty Ratio

15

25

35

%

SOP-8L

3

--

ISW

Switch Current

Duty = 50%

TSSOP-8L

1.5

--

A

ISS

Current Consumption

POWERON

VOUT=2.5V

--

35

100

µA

ISSS

Current Consumption

During Power Off

VON/OFF =0V

--

2

µA

∆VOUT1 Line Regulation

2.5V~7V @ IOUT=0.1A

--

0.2

0.5

%

∆VOUT2 Load Regulation

0.1A~3A(SOP-8L),

0.1A~1.5A(TSSOP-8L)

--

1

1.5

%

FOSC

Oscillation Frequency

220

300

380

KHz

VCEH

CE Pin “High” Voltage

Evaluate oscillation at SW pin

0.65

--

VCEL

CE Pin “Low” Voltage

Evaluate oscillation stop at SW

--

0.2

*Vcc

ISH

--

-0.1

--

0.1

µA

ISL

Power-Off Pin Input

Leakage Current

--

-0.1

--

0.1

µA

EFFI

Efficiency

VIN = 5V, VOUT = 2.5V IOUT = 1A

--

93

--

%

Typical Application Circuit

（

1） Normal Application

+

-

CC

RA

RB

D1

OUT

VSS

FB

PVCC

SW

VCC

RVCC

CVCC

AP1605

=~200K

CE

R

CE

C

CE

)

R

(1

Vref

Vo

B

A

+

×

=

100K

0.1uF

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