FEATURES

 2-channel DC-DC Step Down Regulator Circuit that

employs Voltage Mode Switching Control System

 Internal reference voltage is within 2 accuracy

 Input Voltage Range : VCC: 5 V ~ 25 V

 Adjustable Output Voltage Range with external

Resistor : 1.2 V ~ 22 V (Note)

 Adjustable Switching Frequency with external

Resistor : 200 kHz ~ 2 MHz

 Standby mode consumes less than 1 µA current

 Output over voltage protection function (OVP1)

 Output ground short protection function

 Input over voltage protection (OVP2) function

 Over current protection with adjustable threshold.

 Under voltage lockout function (UVLO)

 Thermal Shut Down function

 Adjustable soft-start function

 Channel-to-channel Phase reversal function

 SSOP024-P-0300F

( Size : 8.1 mm X 7.8 mm, 0.65 mm pitch ),

24pin Plastic Shrink Small Outline Package (SSOP

Type)

(Note) F=490kHz. Please refer Page 10

DESCRIPTION

AN33012UA is 2-channnel DC-DC Controller IC with

Step down Regulation that employs the voltage mode

switching control system, and drives P-channel external

power MOSFET stages.

This IC can be operated with wide input voltage range

and is build in several protection functions, so this IC can

provide high reliability power supply system.

Since it is possible to use up to 2 MHz switching

frequency and output current is adjustable by P-channel

external power MOSFET, this IC realizes downsizing of

set and reducing in the number of external parts.

Output voltage is adjustable by user.

Output current is dependent on external FET.

APPLICATIONS

High Input Voltage Power Systems such as

・Car-Audio system

・Car-Navigation system

・OA Equipment

・Home Appliances etc.