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www.rohm.com
2009.08 - Rev.A
?2009 ROHM Co., Ltd. All rights reserved.
Single-chip Type with Built-in FET Switching Regulator Series
Output 1.5A or Less High Efficiency
Step-down Switching Regulator
with Built-in Power MOSFET
BD9153MUV
?SPAN class="pst BD9153MUV-E2_2471427_6">Description
ROHMs high efficiency dual step-down switching regulators and Linear Regulator Controller, BD9153MUV is a power supply
designed to produce a low voltage including 3.3,0.8 volts from 5.5/4.5 volts power supply line. Offers high efficiency with our
original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster
transient response to sudden change in load.
?SPAN class="pst BD9153MUV-E2_2471427_6">Features
1) Offers fast transient response with current mode PWM control system.
2) Offers highly efficiency for all load range with synchronous rectifier (Pch/Nch FET) and SLLM
TM
(Simple Light Load Mode)
3) Incorporates Nch FET controller for Linear Regulator.
4) Incorporates reset function with 50ms counter.
5) Incorporates soft-start fanction, thermal protection and ULVO functions.
6) Incorporates short-current protection circuit with time delay function.
7) Incorporates shutdown function Icc=0礎(Typ.)
8) Employs small surface mount package : VQFN024V4040
?SPAN class="pst BD9153MUV-E2_2471427_6">Applications
Power supply for LSI including DSP, Micro computer and ASIC
?SPAN class="pst BD9153MUV-E2_2471427_6">Absolute Maximum Rating (Ta=25)
Parameter
Symbol
Limit
Unit
Vcc,PVcc Voltage
VCC,PVCC
-0.3^+7*
1
V
FB1,FB2,FB3,VS Voltage
VFB1, VFB2, VFB3, VVS
-0.3^+7
V
SW1,SW2,ITH1,ITH2 Voltage
VSW1, VSW2, VITH1, V ITH2
-0.3^+7
V
EN,RST,DET,GATE Voltage
V EN, V RST, V DET, V GATE
-0.3^+7
V
Power Dissipation
Pd1
0.34*
2
W
Pd2
0.69 *
3
W
Pd3
2.20 *
4
W
Pd4
3.56*
5
W
Operating Temperature Range
Topr
-40^+85
Storage Temperature Range
Tstg
-55^+150
Maximum Junction Temperature
Tjmax
+150
1 Pd should not be exceeded.
2 IC only
3 1-layer. mounted on a 74.2mm?/SPAN>74.2mm?/SPAN>1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm
2
4 4-layer. mounted on a 74.2mm?/SPAN>74.2mm?/SPAN>1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm
2
, in 1,4 layer, 5505mm
2
in 2,3 layer
5 4-layer. mounted on a 74.2mm?/SPAN>74.2mm?/SPAN>1.6mm glass-epoxy board, occupied area by copper foil : 5505mm
2
, in each layers
?SPAN class="pst BD9153MUV-E2_2471427_6">Operating Conditions (Ta=-40^+85)
Parameter
Symbol
Min.
Typ. Max.
Unit
Vcc Voltage
VCC
4.5
5.0
5.5
V
EN Voltage
VEN
0
-
5.5
V
Output Voltage range
VOUT1
1.8
-
3.3
V
VOUT2
0.8
-
2.5
V
VOUT3
0.8
-
2.5
V
SW Average Output Current
ISW1
-
-
1.5*
6
A
ISW2
-
-
1.5*
6
A
6 Pd should not be exceeded.
No.09027EAT40
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