GSC2596M

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ISSUED DATE :2006/03/08

REVISED DATE :2006/05/17B

G

M

150 KHz, 2A PWM Step-Down DC/DC Converter

Description

The GSC2596M series of regulators are monolithic integrated circuit that provides all active functions for a step-down (buck) switching

regulator, capable of driving 2A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3v, 5v,

12v and an adjustable output version. The GSC2596M series operate at a switching frequency of 150 kHz; thus allowing smaller sized

filter components than what would be needed with lower frequency switching regulators. The chips are available in a standard 8-lead

SOP-8 package. Other feature include a guaranteed D4% to tolerance on output voltage under specified input voltages and output load

conditions. The 150 kHz D15% is on the oscillator frequency. External shutdown is included, featuring 80uA (Typ.) standby current. The

output switch includes cycle-by cycle current limiting, as well as thermal shutdown for full protection under fault conditions.

Features

&Guaranteed 2A output current

&Operating voltage can be up to 22V

&150kHz fixed frequency internal oscillator

&Built-in TTL On/Off control

&TTL Shutdown Capability

&Uses readily available standard inductors

&Thermal shutdown and current limit protection

Applications

&One-ch switching regulators simple

&Positive to negative converter

Package Dimensions

Millimeter

Millimeter

REF.

Min.

Max.

REF.

Min.

Max.

A

5.80

6.20

M

0.10

0.25

B

4.80

5.00

H

0.35

0.49

C

3.80

4.00

L

1.35

1.75

D

0°

8°

J

0.375 REF.

E

0.40

0.90

K

45°

F

0.19

0.25

G

1.27 TYP.

Block Diagram