BD8966FVM-TR ROHM

Datasheet 4.0V to 5.5V , 0.8A 1ch Synchronous Buck Converter with Integrated FET BD8966FVM General Description Key Specifications The BD8966FVM is ROHMs high efficiency Input Voltage Range: 4.0V to 5.5V step-down switching regulator designed to produce a Output Voltage Range: 1.0V to 2.5V voltage as low as 1V from a supply voltage of 5V. It Output Current: 0.8A (Max) offers high efficiency by using synchronous switches Switching Frequency: 1MHz (Typ) and provides fast transient response to sudden load Pch FET ON-Resistance: 350m (Typ) changes by implementing current mode control. Nch FET ON-Resistance: 350m (Typ) Standby Current: 0A (Typ) Operating Temperature Range: -25C to +85C Features Fast Transient Response because of Current Mode PWM Control System Package W(Typ) x D(Typ) x H(Max) High Efficiency for All Load Ranges with Synchronous Rectifier (Nch/Pch FET) 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 MSOP8 2.90 mm x 4.00 mm x 0.90 mm Typical Application Circuit V L CC C IN VCC,PVCC EN V SW OUT C O ADJ R2 ITH GND,PGND R ITH R1 C ITH Figure 1. Typical Application Circuit Product structureSilicon monolithic integrated circuit This product has no designed protection against radioactive rays www.rohm.com TSZ02201-0J3J0AJ00060-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/21 TSZ2211114001 22.Jan.2015 Rev.003Datasheet BD8966FVM Pin Configuration (TOP VIEW) VCC PVCC SW PGND Figure 2. Pin Configuration Pin Description Pin No. Pin Name Function 1 ADJ Output voltage detection pin 2 ITH GmAmp output pin/connected to phase compensation capacitor 3 EN Enable pin (Active high) 4 GND Ground pin 5 PGND Power switch ground pin 6 SW Power switch node 7 PVCC Power switch supply pin 8 VCC Power supply input pin Block Diagram V CC EN 3 VCC 8 VREF Input 7 PVCC Current Comp. Current Sense/ Q R Protect Gm Amp S Output + SLOPE CLK 6 OSC VCC SW Driver Logic UVLO Soft Start 5 TSD PGND 4 GND 1 2 ADJ ITH Figure 3. Block Diagram www.rohm.com TSZ02201-0J3J0AJ00060-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/21 TSZ2211115001 22.Jan.2015 Rev.003