EVB_RT7237AHGSP: 3.3V @ 2A, 4.5 ~ 18Vin

Summary

The RT7237A is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 18V input supply. The RT7237A's current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors.

Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT7237A also provides output under voltage protection and thermal shutdown protection.

The low current (<3µA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7237A is available in an SOP-8 (Exposed Pad) package.

Features

  • ±1.5% High Accuracy Feedback Voltage

  • 4.5V to 18V Input Voltage Range

  • Integrated N-MOSFET Switches

  • Up to 95% Efficiency

  • Programmable Soft-Start

  • Stable with Low-ESR Ceramic Output Capacitors

Specifications

Manufacturer Richtek USA Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number EVB_RT7237AHGSP-ND
Eval Board Supplier Richtek USA Inc.
Eval Board Normally In Stock
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 2 A
Voltage In 4.5 ~ 18 V
Efficiency @ Conditions >90%, 4.5V in, 3.3V @ 0.02 ~ 1.5 A
>90%, 17V in, 3.3V @ 0.3 ~ 1.5 A
>90%, 12V in, 3.3V @ 0.2 ~ 1.5 A
Voltage Out Range 0.8 ~ 15 V
Features Current Limit (Adj. or Fixed)
Soft Start
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 340 kHz
Standby Current [Typical] 500 nA
Quiescent Current [Typical] 800 µA
Component Count + Extras 15 + 15
Internal Switch Yes
Design Author Richtek USA Inc.
Application / Target Market FPGA / DSP / Processors
LCD Backlighting
LCD TV / Monitor
Point of Load (PoL)
Power: Industrial Power
RF: WLAN Access Points
Set-Top Boxes
White Goods
Standby Current [Maximum] 3 µA
Quiescent Current [Maximum] 1.2 mA
Main I.C. Base Part RT7237A
Date Created By Author 2014-07
Date Added To Library 2022-06

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