EVB_RT2856GQW: 3.3V @ 6A, 4.5 ~ 18Vin

Summary

The RT2856GQW is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT2856GQW current-mode architecture with externalcompensation allows 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 startup. Fault condition protections include output under-voltage protection, output over-voltage protection,and overtemperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.

Product Feature

  • Low RDS (ON) Power MOSFET Switches 26mΩ/19mΩ

  • Accurate Voltage Reference 0.8V±1%, Over -40°C to 85°C

  • Monotonic Start-Up into Pre-biased Outputs

  • Adjustable Soft-Start

  • Power Good Indicator

  • Under-Voltage and Over-Voltage Protection

  • Input Under-Voltage Lockout

Specifications

Manufacturer Richtek USA Inc.
Category AC/DC and DC/DC Conversion
Sub-Category DC/DC SMPS - Single Output
Eval Board Part Number EVB_RT2856GQW-ND
Eval Board Supplier Richtek USA Inc.
Eval Board Board not Stocked
Topology Step Down
Outputs and Type 1 Non-Isolated
Voltage Out: Factory Set 3.3 V
Current Out 6 A
Voltage In 4.5 ~ 18 V
Efficiency @ Conditions >95%, 9V in, 3.3V @ 1 ~ 4 A
>95%, 12V in, 5V @ 1 ~ 6 A
>90%, 17V in, 3.3V @ 1 ~ 6 A
>90%, 12V in, 3.3V @ 0.5 ~ 6 A
Voltage Out Range 0.8 ~ 16.2 V
Features Current Limit (Adj. or Fixed)
Over Voltage Protection
Power Good Output
Soft Start
Synchronizable
Under Voltage Protection, Brown-Out
Switching Frequency 200 kHz ~ 1.6 MHz
Standby Current [Typical] 3 µA
Quiescent Current [Typical] 600 µA
Component Count + Extras 19 + 24
Internal Switch Yes
Design Author Richtek USA Inc.
Application / Target Market Point of Load (PoL)
Power: Industrial Power
Standby Current [Maximum] 9 µA
Quiescent Current [Maximum] 1 mA
Main I.C. Base Part RT2856
Date Created By Author 2016-03
Date Added To Library 2021-04

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