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BD8961NV_10 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
BD8961NV
No.10027EBT22
âDescription
ROHMâs high efficiency step-down switching regulator BD8961NV is a power supply designed to produce a low voltage
including 3.3 volts from 5 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 : SON008V5060
âUse
Power supply for LSI including DSP, Micro computer and ASIC
âLine up
Parameter
Symbol
Ratings
Unit
VCC Voltage
PVCC Voltage
VCC
-0.3ï½+7 ï¼1
V
PVCC
-0.3ï½+7 ï¼1
V
EN Voltage
VEN
-0.3ï½+7
V
SW,ITH Voltage
Power Dissipation 1
Power Dissipation 2
VSW,VITH
-0.3ï½+7
V
Pd1
900ï¼2
mW
Pd2
3900ï¼3
mW
Operating temperature range
Topr
-25ï½+105
â
Storage temperature range
Tstg
-55ï½+150
â
Maximum junction temperature
Tjmax
+150
â
ï¼1 Pd should not be exceeded.
ï¼2 Derating in done 7.2mW/â for temperatures above Ta=25â, Mounted on 70mmÃ70mmÃ1.6mm Glass Epoxy PCB (the density of copper:3%)
ï¼3 Derating in done 31.2mW/â for temperatures above Ta=25â, Mounted on JESD51-7.
âOperating Conditions (Ta=25â)
Parameter
VCC Voltage
PVCC Voltage
EN Voltage
SW average output current
ï¼4 Pd should not be exceeded.
Symbol
Ratings
Unit
Min.
Typ.
Max.
VCC *4
4.5
5.0
5.5
V
PVCC *4
4.5
5.0
5.5
V
VEN
0
Isw *4
-
-
VCC
V
-
2.0
A
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© 2010 ROHM Co., Ltd. All rights reserved.
1/13
2010.04 - Rev.B
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