NCP3121 Datasheet | onsemi

Dual 3.0 A, Step-Down DC/DC Switching Regulator 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 k Hz - 750 k Hz 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 es in a 32- pin QFN package. Features - Input Voltage Range from 4.5 V to 13.2 V - 12 Vin to 5.0 Vout = 85% Efficiency Min @ 3.0 A - 200- 750 k Hz 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 m A) http://onsemi. 1 32 QFN32 CASE 488AM MARKING DIAGRAM NCP3121 AWLYYWWG NCP3121 = Specific Device Code A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb- Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 40 of this data sheet. Typical Applications - Set- Top Boxes, Portable Applications, Networking and Telemunications - DSP/m P/FPGA Core R_TRACK PG1 PG2...