AP1507

150KHz, 3A PWM Buck DC/DC Converter

Anachip Corp.

www.anachip.com.tw

Rev.1.1 Oct 29, 2004

3/9

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

Supply Voltage

+24

V

ON

/OFF Pin input voltage

-0.3 to +18

V

Feedback Pin voltage

-0.3 to +18

V

Output voltage to Ground

-1

V

Power dissipation

Internally limited

W

Storage temperature

-65 to +150

Operating temperature

-40 to +125

Operating voltage

+4.5 to +22

V

Electrical Characteristics (All Output Voltage Versions)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

-50

Feedback bias current

(Adjustable version only)

-10

-100

nA

127

150

173

Oscillator frequency

110

173

KHz

Oscillator

frequency

of

short circuit protect

When current limit occurred

5

15

25

KHz

1.6

Saturation voltage

No outside circuit

1.4

1.7

V

Max. Duty Cycle (ON)

100

DC

Min. Duty Cycle (OFF)

0

%

5.5

Current limit

Peak current

No outside circuit

3.6

4.5

6.5

A

Output = 0V

No outside circuit

-200

uA

Output = -1V

Output

leakage

current

-5

mA

Quiescent Current

5

10

mA

150

Standby Quiescent

Current

ON /OFF pin=5V

70

200

uA

Low (regulator ON)

-

0.6

ON

/OFF pin logic input

threshold voltage

High (regulator OFF)

2.0

1.3

-

V

ON

/OFF pin logic input

current

-0.01

ON

-0.1

-1

uA

Thermal Resistance

TO252-5L

Junction to

case

10

Thermal Resistance

With copper area of

approximately 2cm ×2cm

TO252-5L

Junction to

ambient

50