RT7296C

Copyright © 2015 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

DS7296C-00

May

2015

www.richtek.com

1

3A, 17V Current Mode Synchronous Step-Down Converter

General Description

The RT7296C is a high-efficiency, 3A current mode

synchronous step-down DC/DC converter with a wide

input voltage range from 4.5V to 17V. The device

integrates

80m

 high-side and 30m low-side

MOSFETs to achieve high efficiency conversion. The

current

mode

control

architecture

supports

fast

transient response and internal compensation. A

cycle-by-cycle current limit function provides protection

against

shorted

output.

The

RT7296C

provides

complete

protection

functions

such

as

input

under-voltage lockout, output under-voltage protection,

over-current protection, and thermal shutdown. The

PWM frequency is adjustable by the EN/SYNC pin. The

RT7296C is available in the TSOT-23-8 (FC) package.

Ordering Information

Package Type

J8F : TSOT-23-8 (FC)

Lead Plating System

G : Green (Halogen Free and Pb Free)

RT7296C

Note :

Richtek products are :



RoHS compliant and compatible with the current

requirements of IPC/JEDEC J-STD-020.



Suitable for use in SnPb or Pb-free soldering processes.

Features



4.5V to 17V Input Voltage Range



3A Output Current



Internal N-Channel MOSFETs



Current Mode Control



Fixed Switching Frequency : 1.4MHz



Synchronous to External Clock : 300kHz to 3MHz



Cycle-by-Cycle Current Limit



External Soft-Start Function



Input Under-Voltage Lockout



Output Under-Voltage Protection



Thermal Shutdown

Applications



Industrial and Commercial Low Power Systems



Computer Peripherals



LCD Monitors and TVs



Set-top Boxes

Marking Information

00=DNN

00= : Product Code

DNN : Date Code

Simplified Application Circuit

Enable

VIN

EN/SYNC

GND

BOOT

FB

SW

RT7296C

R5

R1

R2

PVCC

SS

C3

C4

C2

L1

C5

C1