AP450

2 Channel Linear Controller with Enable Function

Anachip Corp.

www.anachip.com.tw

Rev. 1.1 Sep 7, 2004

3/6

Reference (REF)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

AP450A

1.225

1.25

1.275

AP450B

0.784 0.800 0.816

V

-

-0.1

±1

%

Output voltage change with

temperature

-

-0.2

±1

%

Under voltage lockout (UVLO)

-

2.9

-

V

-

2.4

-

V

-

500

-

mV

Output section

CH1 Current Limit

25

-

-

mA

CH2 Current Limit

25

-

-

mA

Enable function

Low (regulator ON)

-

0.6

V

EN pin logic input threshold

voltage for EN1/2

High (regulator OFF)

2.0

1.3

-

V

Low (regulator ON)

-

-0.03

-

µA

EN pin logic input current for

EN1/2

High (regulator OFF)

-

0.3

-

µA

Total device

Average supply current

-

5

7

mA

Thermal Resistor

SOP8

-

90

-

Thermal Resistor

Junction to Ambient

PDIP8

-

60

-

Typical Application Circuit

1

2

3

4

GND

Vcc

8

7

6

5

EN1/2

FB1

FB2

OUT1

OUT2

V

REF

Vcc=12V

OFF ON

270Ω

220µF

3.3V

3.3V

220Ω

390Ω

180Ω

0.1µF

220µF

220µF

AP450B