RT7296F

Copyright © 2023 Richtek Technology Corporation. All rights reserved.

is a registered trademark of Richtek Technology Corporation.

DS7296F-06

September

2023

www.richtek.com

1

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

General Description

The RT7296F 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. The

RT7296F provides power good pin to be an output

voltage ready indicator. A cycle-by-cycle current limit

function provides protection against shorted output.

The RT7296F provides complete protection functions

such

as

input

undervoltage

lockout,

output

undervoltage protection, overcurrent protection, and

thermal shutdown. The PWM frequency is adjustable

by the EN/SYNC pin. The RT7296F is available in the

TSOT-23-8 (FC) package.

The recommended junction temperature range is

−40C to 125C and ambient temperature range is

−40C to 85C.

Ordering Information

Package Type

J8F: TSOT-23-8 (FC)

Lead Plating System

G: Richtek Green Policy Compliant

RT7296F

Note:

Richtek products are Richtek Green Policy compliant

and

compatible

with

the

current

requirements

of

IPC/JEDEC J-STD-020.

Features

⚫

4.5V to 17V Input Voltage Range

⚫

3A Output Current

⚫

Internal N-Channel MOSFETs

⚫

Current Mode Control

⚫

Fixed Switching Frequency: 500kHz

⚫

Synchronous to External Clock: 200kHz to 2MHz

⚫

Cycle-by-Cycle Current Limit

⚫

Internal Soft-Start Function

⚫

Power Saving Mode at Light Load

⚫

Power Good Indicator

⚫

Input Undervoltage Lockout

⚫

Output Undervoltage Protection

⚫

Thermal Shutdown

⚫

RoHS Compliant and Halogen Free

Applications

⚫

Industrial and Commercial Low Power Systems

⚫

Computer Peripherals

⚫

LCD Monitors and TVs

⚫

Set-top Boxes

Marking Information

08=DNN

08= : Product Code

DNN : Date Code

Simplified Application Circuit

Enable

VIN

EN/SYNC

GND

BOOT

FB

SW

VOUT

VIN

RT7296F

R5

R1

R2

PVCC

PG

C3

C4

C2

L1

C1

R3