Onsemi NCP3121

Description

The NCP3121 is a dual buck converter designed for low voltage applications requiring high efficiency. This device is capable of producing an output voltage as low as 0.8 V. The NCP3121 provides dual 3.0 A switching regulators with an adjustable 200 kHz − 750 kHz switching frequency. The switching frequency is set by an external resistor. The NCP3121 also incorporates an auto−tracking and sequencing feature. Protection features include cycle−by−cycle current limit and undervoltage lockout (UVLO). The NCP3121 comes in a 32−pin QFN package.

Features

• Input Voltage Range from 4.5 V to 13.2 V
• 12 Vin to 5.0 Vout = 87% Efficiency Min @ 3.0 A
• 200−750 kHz Operation
• Stable with Low ESR Ceramic Output Capacitor
• 0.8 ±1.5% FB Reference Voltage
• External Soft−Start
• Out of Phase Operation of OUT1 & OUT2
• Auto−Tracking and Sequencing
• Enable/Disable Capability
• Hiccup Overload Protection
• Low Shutdown Power (Iq < 100 µA)

Note:Refer page 15 for different freq in /out and Iout.

Typical applications

• Portable Applications,
• Set−Top Boxes,
• Networking and Telecommunications
• DSP/P/FPGA Core

More information

• Datasheet
• IC product information