BD8964FVM_12 Datasheet, PDF (1/18 Pages) Rohm – 4.0V to 5.5V, 1.2A 1ch Synchronous Buck Converter Integrated FET

4.0V to 5.5V, 1.2A 1ch
Synchronous Buck Converter Integrated FET
BD8964FVM
●General Description
ROHM’s high efficiency step-down switching
regulator BD8964FVM is a power supply designed
to produce a low voltage including 1 volts from 5/3.3
volts power supply line. Offers high efficiency with
synchronous rectifier. Employs a current mode
control system to provide faster transient response
to sudden change in load.
●Features
 Offers fast transient response with current mode
PWM control system.
 Offers highly efficiency for all load range with
synchronous rectifier (Nch/Pch FET)
 Incorporates soft-start function.
 Incorporates thermal protection and ULVO
functions.
 Incorporates short-current protection circuit with
time delay function.
 Incorporates 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℃ to +85℃
●Packages
MSOP8
2.90mm x 4.00mm x 0.83mm
●Application
Power supply for LSI including DSP, Micro computer
and ASIC
●Typical Application Circuit
Cin
L
VCC
VCC,PVCC
EN
SW
VOUT
VOUT
VOUT
ESR
RO
ITH
GND,PGND
CO
RITH
CITH
Fig.1 Typical application
○Product structure：Silicon monolithic integrated circuit
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TSZ22111ï½¥14ï½¥001
○This product is not designed protection against radioactive rays.
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TSZ02201-0J3J0AJ00050-1-2
02.MAR.2012 Rev.001