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BD8964FVM Datasheet, PDF (1/14 Pages) Rohm – Low Noise High Efficiency Step-down Switching Regulator with Built-in Power MOSFET | |||
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Single-chip Type with Built-in FET Switching Regulator Series
Low Noise High Efficiency
Step-down Switching Regulator
with Built-in Power MOSFET
BD8964FVM
No.09027EAT23
âDescription
ROHMâs 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.
âFeatures
1) Offers fast transient response with current mode PWM control system.
2) Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET)
3) Incorporates soft-start function.
4) Incorporates thermal protection and ULVO functions.
5) Incorporates short-current protection circuit with time delay function.
6) Incorporates shutdown function
7) Employs small surface mount package : MSOP8
âUse
Power supply for LSI including DSP, Micro computer and ASIC
âLine up
Parameter
VCC Voltage
PVCC Voltage
Symbol
VCC
PVCC
Limits
Unit
-0.3ï½+7 *1
V
-0.3ï½+7 *1
V
EN Voltage
VEN
-0.3ï½+7
V
SW,ITH Voltage
Power Dissipation 1
Power Dissipation 2
VSW,VITH
Pd1
Pd2
-0.3ï½+7
V
387.5*2
mW
587.4*3
mW
Operating temperature range
Topr
-25ï½+85
â
Storage temperature range
Tstg
-55ï½+150
â
Maximum junction temperature
Tjmax
+150
â
ï¼1 Pd should not be exceeded.
ï¼2 Derating in done 3.1mW/â for temperatures above Ta=25â.
ï¼3 Derating in done 4.7mW/â for temperatures above Ta=25â, Mounted on 70mmÃ70mmÃ1.6mm Glass Epoxy PCB.
âOperating Conditions (Ta=25â)
Parameter
VCC Voltage
PVCC Voltage
EN Voltage
Output voltage Setting Range
SW average output current
ï¼4 Pd should not be exceeded.
Symbol
VCC *4
PVCC *4
VEN
VOUT
Isw *4
Limits
Unit
Min.
Typ.
Max.
4.0
5.0
5.5
V
4.0
5.0
5.5
V
0
-
VCC
V
1.0
-
1.8
V
-
-
1.2
A
www.rohm.com
© 2009 ROHM Co., Ltd. All rights reserved.
1/13
2009.05 - Rev.A
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