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Dual 1A/1.5A-1.2MHz Synchronous Step-Down Converters

RT8012A

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The RT8012A is a dual PWM, current mode, stepdown converter. Its input voltage range is from 2.6V to 5.5V and has a constant 1.2MHz switching frequency, allowing the use of tiny, low cost capacitors and inductors 2mm or less in height. Each output voltage is adjustable from 0.8V to 5V. Internal power switches with low on-resistance of the dual step-down regulators increase efficiency and eliminate the need for external Schottky diodes. The RT8012A can run at 100% duty cycle for low dropout operation that extends battery life in portable systems. With independent Enable and Power-Good pins, it is easy to control the power up sequence of the two converters, which is important in some applications.

Applications

  • Portable Instruments
  • Microprocessors and DSP Core Supplies
  • Cellular Phones
  • Wireless and DSL Modems
  • PC Cards
  • Digital Cameras
Datasheet
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Dual 1A/1.5A-1.2MHz Synchronous Step-Down Converters2007/01/08
Reliability
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Dual 1A/1.5A-1.2MHz Synchronous Step-Down Converters 2015/05/19
Technical Documents
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Power Mangement Components for Lithium-Ion Battery Powered Applications2018/11/15
Videos
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How to estimate control loop bandwidth from the transient response time?2017/03/30 617
Additional Documents
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Power Management Components for Lithium-Ion Battery Powered Applications
鋰離子電池電源管理IC選擇指南
2019/03/04
Reference Design
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Richtek Load Transient Tool2019/01/09
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