Renesas RAA23021x

Description

The RAA23021x is a high efficiency monolithic step-down DC/DC synchronous converter plus a LDO (low dropout) regulator which has an ultra-low power mode.

Features

• • DC/DC converter (ch1)
• ⎯ Synchronous rectification type step-down circuit
• ⎯ Integrated power MOSFETs
• ⎯ Preset output voltage (There are also products that have adjustable output voltage using external resistors.)
• ⎯ Internal phase compensator
• ⎯ Switching frequency: 1 MHz (fixed)
• ⎯ Internal timer-latch-type short-circuit protector (fixed delay time)
• ⎯ 100% duty cycle operation
• • LDO (ch2)
• ⎯ 500mA
• ⎯ Internal over current protector (foldback-current limiting)
• ⎯ Ultra low-power save mode (25uA typical)
• • Common Features
• ⎯ Internal rise up sequencer
• ⎯ Internal digital soft-start function (2 ms fixed soft-start time)
• ⎯ Internal discharge circuit
• ⎯ Power good function
• ⎯ Internal timer-latch-type thermal shutdown circuit (shutdown temperature: 150°C or higher)
• ⎯ Internal recovery-type under voltage lockout circuit

Typical applications

• Smart meter And, usable around MCU, ASIC, FPGA, etc
• Communication
• Building
• Industrial

More information

• Datasheet
• IC product information