TS3552

2A/350kHz Synchronous Buck DC/DC Converter

1/11

Version: B11

SOP-8

General Description

The TS3552 is a synchronous step-down DC/DC converter that provides wide 4.75V to 23V input voltage range

and 2A continuous load current capability. Fault protection includes cycle-by-cycle current limit, input UVLO,

output over voltage protection and thermal shutdown. Besides, adjustable soft-start function prevents inrush

current at turn-on. This device uses current mode control scheme that provides fast transient response. In

shutdown mode, the regulator draws 1µA or less of supply current.

Features

●

Operating Voltage Range 4.75V~23V

●

Output load current up to 2A

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High Efficiency: Up to 93%

●

Fixed Switching Frequency 350kHz

●

100m

Internal Power MOSFET

●

Adjustable Output Voltage from 0.925~20V

●

Stable with Low ESR Output Ceramic Capacitors

●

Current Mode Operation

●

Input Under Voltage Lockout

●

Over Temperature Protection

●

Cycle-by Cycle Current limit

●

<1µA Shutdown Current

Ordering Information

Part No.

Package

Packing

TS3552CS RLG

SOP-8

2.5Kpcs / 13” Reel

Note: “G” denote for Halogen Free Product

Application

●

Set-Top-Box

●

DVD, LCD Displays

●

Netbook

●

Distributed Power System

●

DSL Modems

Typical Application Circuit

3.3V Output Application Circuit

Pin Definition:

1. BS

8. SS

2. VIN

7. EN

3. SW

6. COMP

4. GND

5. FB