RT7252BZSP

Evaluation Board

UG7252BZSP-00

January 2015

2

http://www.richtek.com

your power partner.

Introduction

General Product Information

The RT7252B is a high efficiency, monolithic synchronous step-down DC/DC converter that operates at 800kHz and

delivers up to 2A output current from a 4V to 17V input supply. The RT7252B

’s current mode architecture allows the

transient response to be optimized. Cycle-by-cycle current limit provides protection against shorted outputs and

soft-start eliminates input current surge during start-up. Fault conditions also include output under voltage protection,

output over voltage protection, and thermal shutdown. T

he low current (<5μA) shutdown mode provides output

disconnect, enabling easy power management in battery-powered systems. The RT7252B is available in a SOP-8

(Exposed Pad) package

Product Feature



4V to 17V Input Voltage Range



2A Output Current



Internal N-MOSFETs



Current Mode Control



Fixed Frequency Operation : 800kHz



Output Adjustable from 0.8V to 12V



Up to 95% Efficiency



Internal Compensation



Stable with Low ESR Ceramic Output Capacitors



Cycle-by-Cycle Over Current Protection



Input Under Voltage Lockout



Output Under Voltage Protection



Output Over Voltage Protection



Power Good Indicator



Thermal Shutdown Protection



RoHS Compliant and Halogen Free

Key Performance Summary Table

Key Features

Evaluation Board Number: PCB008_V1

Default Input Voltage

12V

Max Output Current

2A

Default Output Voltage

3.3V

Default Marking & Package Type

RT7252BZSP (SOP-8 (Exposed Pad))

Operation Frequency

Steady 800kHz at PWM

Other Key Features

4V to 17V Input Voltage Range

Power Good Indicator

Protection

Over Current Protection

Hiccup Mode Output Under-Voltage & Over-Voltage Protection

Thermal Shutdown