EVB_RT7250BZSP: 3.3V @ 2A, 4 ~ 17Vin

Summary

The RT7250B 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 RT7250B'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.

The low current (<5µA) shutdown mode provides output disconnect, enabling easy power management in battery-powered systems. The RT7250B is available in a SOP-8 (Exposed Pad) package.

Product Features:

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

Specifications

Manufacturer	Richtek USA Inc.
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	EVB_RT7250BZSP-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	2 A
Voltage In	4 ~ 17 V
Efficiency @ Conditions	>90%, 12V in, 5V @ 0.1 ~ 2 A >90%, 12V in, 3.3V @ 0.2 ~ 1 A >80%, 12V in, 1.2V @ 300 ~ 900 mA
Voltage Out Range	0.8 ~ 12 V
Features	Over Current Protection Over Voltage Protection Power Good Output Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	800 kHz
Standby Current [Typical]	1 µA
Quiescent Current [Typical]	600 µA
Component Count + Extras	12 + 16
Internal Switch	Yes
Design Author	Richtek USA Inc.
Application / Target Market	FPGA / DSP / Processors LCD TV / Monitor Point of Load (PoL) Power: Industrial Power White Goods
Standby Current [Maximum]	5 µA
Quiescent Current [Maximum]	1 mA
Main I.C. Base Part	RT7250B
Date Created By Author	2015-01
Date Added To Library	2021-04