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AP1515

150KHz, 1.5A PWM Buck DC/DC Converter

Anachip Corporation 

150KHz, 1.5A PWM Buck DC/DC Converter

AP1515

„ Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

VCC

Supply Voltage

+24

V

VSD

ON/OFF Pin input voltage

-0.3 to +18

V

VFB

Feedback Pin voltage

-0.3 to +18

V

VOUT

Output Voltage to Ground

-1

V

PD

Power Dissipation

TST

Storage temperature

TOP

Operating temperature

Internally limited

W

-65 to +150

oC

-40 to +125

oC

VOP

Operating voltage

+4.5 to +22

V

„ Electrical Characteristics (All Output Voltage Versions)

Unless otherwise specified, VIN= 12V for 3.3V, 5V, adjustable version and VIN=18V for the 12V version. ILOAD = 0.5A

Symbol

Parameter

Conditions

Min. Typ.

IFB

FOSC

FSCP

VSAT

DC

ICL

IL

IQ

ISTBY

θJC

θJA

Feedback bias current

VFB=1.3V

(Adjustable version only)

-

Oscillator frequency

127

110

Oscillator frequency of When current limit occurred and

short circuit protect VFB < 0.5V, Ta=25 oC

10

IOUT=2A

Saturation voltage

No outside circuit

-

VFB=0V force driver on

Max. Duty Cycle (ON) VFB=0V force driver on

-

Min. Duty Cycle (OFF) VFB=12V force driver off

-

Peak current

SIP-4

2

Current limit

No outside circuit

VFB=0V force driver SOP-8

2.5

on

Output = 0

Output

leakage

No outside circuit

VFB=12V force driver off

-

Output = -1 current VIN=22V

-

Quiescent Current

VFB=12V force driver off

-

Standby Quiescent

Current

ON/OFF pin=5V

VIN=22V

-

Thermal Resistance Junction to case

SIP-4

SOP-8

-

Note 1

Junction to ambient

SIP-4

SOP-8

-

-10

150

-

30

1.25

100

0

-

-

-

-5

5

70

30

15

100

70

Max.

-50

-100

173

173

50

1.4

1.5

-

-

-

-

-200

10

150

200

-

-

Unit

nA

KHz

KHz

V

%

A

uA

mA

mA

uA

oC/W

oC/W

Part Number

AP1515-ADJ

Symbol

VFB

η

Parameter

Output

Feedback

Efficiency

Conditions

4.5V < VIN < 22V

0.2A < ILOAD < 1.5A

VOUT programmed for 3V

VIN = 12V, ILOAD=1.5A

Typ.

1.23

78

Limit

1.193/1.18

1.267/1.28

AP1515-3.3V

VOUT

Output voltage

4.75V < VIN < 22V

0.2A < ILOAD < 1.5A

3.3

3.168/3.135

3.432/3.465

η

Efficiency

VIN = 12V, ILOAD=1.5A

80

Specifications with boldface type are for full operating temperature range, the other type are for TJ=25ºC.

Note 1: Pin 4(GND) (< 1 mm length) & direct connect to internal GND layer (for SIP-4 only).

Unit

V

VMIN

VMAX

%

V

VMIN

VMAX

%

Anachip Corp.

www.anachip.com.tw

Rev.1.1 Oct 24, 2005

3/9

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