BD8963EFJ-E2 ROHM

Datasheet 2.7V to 5.5V , 3A 1ch Synchronous Buck Converter with Integrated FET BD8963EFJ General Description Key Specifications The BD8963EFJ is ROHM s high efficiency step-down Input Voltage Range: 2.7V to 5.5V switching regulator designed to produce a voltage as Output Voltage Range: 1.0V to 2.5V low as 1.0V from a supply voltage of 5.5V/3.3V. It offers Average Output Current: 3.0A (Max) high efficiency by using synchronous switches and Switching Frequency: 1MHz (Typ) provides fast transient response to sudden load Pch FET ON-Resistance: 145m(Typ) changes by implementing current mode control. Nch FET ON-Resistance: 80m(Typ) Standby Current: 5.0A (Typ) Operating Temperature Range: -25C to +85C Features Fast Transient Response because of Current Mode Control System Package W(Typ) x D(Typ) x H(Max) High Efficiency for All Load Ranges because of Synchronous Switches Soft-Start Function Thermal Shutdown and UVLO Functions Short Circuit Current Protection with Time Delay Function Shutdown Function Applications Power Supply for LSI including DSP, Microcomputer and ASIC HTSOP-J8 4.90mm x 6.00mm x 1.00mm Typical Application Circuit L V CC CIN VCC EN VOUT SW C O ADJ R2 COMP GND R COMP R1 CCOMP Figure 1. Typical Application Circuit Product structure Silicon monolithic integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0J3J0AJ00040-1-2 2012 2012ROHM Co., Ltd. All rights reserved. 1/24 TSZ22111 14 001 02.Oct.2014 Rev.003 Datasheet BD8963EFJ Pin Configuration (TOP VIEW) COMP ADJ N.C GND . EN SW VCC SW Figure 2. Pin Configuration Pin Description Pin No. Pin Name Pin Function 1 COMP GmAmp output pin/connected to phase compensation capacitor 2 GND Ground pin 3 EN Enable pin (Active High, Open Active) 4 VCC Power supply input pin 5 SW Power switch node 6 SW Power switch node 7 N.C No connection 8 ADJ Output voltage detection pin Block Diagram V CC VCC SW SW VCC GND Figure 3. Block Diagram www.rohm.com TSZ02201-0J3J0AJ00040-1-2 20122012 ROHM Co., Ltd. All rights reserved. 2/24 TSZ22111 15 001 02.Oct.2014 Rev.003