Product Summary

The NCP5425DBR2G is a highly flexible dual buck controller with internal gate drivers that can be used with two input power supplies and one or two outputs in multiple configurations. The NCP5425DBR2G contains all the circuitry required for two independent synchronous dual NFET buck regulators utilizing a feed forward voltage mode control method. The NCP5425DBR2G can run from a single supply ranging from 4.6 to 12V and support a single two phase or dual single phase outputs. The NCP5425DBR2G is available in a 20 pin TSSOP package allowing the designer to minimize PCB area.

Parametrics

NCP5425DBR2G absolute maximum ratings: (1)Operating Junction Temperature, TJ: 150℃; (2)Storage Temperature Range, TJ: -65 to 150℃; (3)ESD Susceptibility (Human Body Model): 2.0kV; (4)ESD Susceptibility (Machine Model): 200V; (5)Thermal Resistance, Junction -to-Air: 140℃/W; (6)Moisture Sensitivity Level (MSL): 1; (7)Lead Temperature Soldering: Reflow: 260 peak℃.

Features

NCP5425DBR2G features: (1)Operation Over 4.6 to 13.2V; (2)Dual Synchronous Buck Design; (3)Configurable as a Single Two Phase Output or Two Single Phase Outputs; (4)Programmable Power Sharing and Budgeting from Two Independent Supplies; (5)0.8 V 1% Reference for Low Voltage Outputs; (6)1.5 A Peak Power Drive; (7)Switch Blanking for Noise Sensitive Applications through use of ROSC Pin; (8)Programmable Frequency, 150 kHz to 750 kHz Operation; (9)Programmable Soft Start; (10)Cycle by Cycle Overcurrent Protection; (11)Independent Programmable Current Limits; (12)100% Duty Cycle for Fast Transient Response; (13)Internal Slope Compensation; (14)Out of Phase Synchronization between the Controllers; (15)Input Undervoltage Lockout; (16)On/Off Enable through use of the COMP Pins; (17)Power Supply Sequencing; (18)These are Pb Free Devices.

Diagrams

NCP5425DBR2G Block Diagram

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