BD8964FVM_15 Datasheet, PDF (1/25 Pages) Rohm – Synchronous Buck Converter with Integrated FET

Datasheet
4.0V to 5.5V, 1.2A 1ch
Synchronous Buck Converter with
Integrated FET
BD8964FVM
General Description
The BD8964FVM is ROHM’s high efficiency step-down
switching regulator designed to produce a voltage as
low as 1V from a supply voltage of 5V. It offers high
efficiency by using synchronous switches and provides
fast transient response to sudden load changes by
implementing current mode control.
Features
 Fast Transient Response because of Current Mode
PWM Control System
 High Efficiency for All Load Ranges with
Synchronous Rectifier (Nch/Pch FET)
 Soft-Start Function
 Thermal Shutdown and UVLO Functions
 Short-Circuit Protection with Time Delay Function
 Shutdown Function
Key Specifications
 Input Voltage Range:
 Output Voltage Range:
 Output Current:
 Switching Frequency:
 Pch FET ON-Resistance:
 Nch FET ON-Resistance:
 Standby Current:
 Operating Temperature Range:
4.0V to 5.5V
1.0V to 1.8V
1.2A (Max)
1.0MHz (Typ)
350mΩ(Typ)
250mΩ(Typ)
0μA (Typ)
-25°C to +85°C
Package
W(Typ) x D(Typ) x H(Max)
Application
Power Supply for LSI including DSP, Microcomputer
and ASIC
Typical Application Circuit
MSOP8
2.90 mm x 4.00 mm x 0.90 mm
V_CC
C_IN
L
EN
VCC,PVCC
SW
ADJ
CO
ITH
GND,PGND
R_ITH
C_ITH
VOUT
R₂
R₁
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
©2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥15ï½¥001
○ This product has no designed protection against radioactive rays
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TSZ02201-0J3J0AJ00050-1-2
22.Jan.2015 Rev.003