Onsemi NCP81234

Description

The NCP81234, a dual−channel/two−phase synchronous buckcontroller, provides flexible power management solutions forapplications supported by DrMOS. Operating in high switchingfrequency up to 1.2 MHz allows employing small size inductor andcapacitors.

Features

• Single Vin = 4.5 ~ 20 V with Input Feedforward
• Integrated 5.35 V LDO
• Vout = 0.6 V ~ 5.3 V
• Fsw = 200 k ~ 1.2 MHz
• PWM Output Compatible to 3.3 V and 5 V DrMOS
• Dual−Channel or Two−Phase Operation
• DDR Power Mode Option
• Interleaved Operation
• Differential Current Sense Compatible for both Inductor DCR Senseand DrMOS Iout
• 2 Independent Enables with Programmable Input UVLO
• Programmable DrMOS Power Ready Detection (DRVON)
• 2 Power Good Indicators
• Comprehensive Fault Indicator
• Externally Programmable Soft Start and Delay Time
• Programmable Hiccup Over Current Protection
• Hiccup Under Voltage Protection
• Recoverable Over Voltage Protection
• Hiccup Over Temperature Protection
• Thermal Shutdown Protection
• QFN−28, 5x5 mm, 0.5 mm Pitch Package
• This is a Pb−Free Device

Typical applications

• Server and Storage System
• DDR Applications
• Telecom Applications
• Multiple Rail Systems

More information

• Datasheet