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BD8962MUV Datasheet, PDF (1/17 Pages) Rohm – Low Noise Step-down High Efficiency Step-down Switching Regulator with Built-in Power MOSFET | |||
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TECHNICAL NOTE
Single-chip Type with built-in FET Switching Regulator Series
Low Noise Step-down
High Efficiency Step-down
Switching Regulator
with Built-in Power MOSFET
BD8962MUV
âDescription
ROHMâs high efficiency step-down switching regulator BD8962MUV is a power supply designed to produce a low voltage
including 0.8 volts from 5.5/3.3 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/Nch 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 Icc=0μA(Typ.)
7) Employs small surface mount package : VQFN020V4040
âUse
Power supply for LSI including DSP, Micro computer and ASIC
âAbsolute Maximum Rating (Ta=25â)
Parameter
VCC Voltage
PVCC Voltage
Symbol
Limits
Unit
BD8962MUV
VCC
-0.3ï½+7 *1
V
PVCC
-0.3ï½+7 *1
V
BST Voltage
VBST
-0.3ï½+13
V
BST_SW Voltage
VBST-SW
-0.3ï½+7
V
EN Voltage
VEN
-0.3ï½+7
V
SW,ITH Voltage
Power Dissipation 1
Power Dissipation 2
Power Dissipation 3
Power Dissipation 4
VSW, VITH
-0.3ï½+7
V
Pd1
0.34 *2
W
Pd2
0.70 *3
W
Pd3
1.21 *4
W
Pd4
3.56 *5
W
Operating temperature range
Topr
-40ï½+105
â
Storage temperature range
Tstg
-55ï½+150
â
Maximum junction temperature
Tj
+150
â
ï¼1 Pd should not be exceeded.
ï¼2 IC only
ï¼3 1-layer. mounted on a 74.2mmÃ74.2mmÃ1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm2
ï¼4 4-layer. mounted on a 74.2mmÃ74.2mmÃ1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm2 , in each layers
ï¼5 4-layer. mounted on a 74.2mmÃ74.2mmÃ1.6mm glass-epoxy board, occupied area by copper foil : 5505mm2, in each layers
âOperating Conditions (Ta=-40ï½+105â)
Parameter
Symbol
BD8962MUV
Min.
Typ.
Max.
Unit
Power Supply Voltage
VCC
2.7
3.3
5.5
V
PVCC
2.7
3.3
5.5
V
EN Voltage
VEN
0
-
5.5
V
Output voltage Setting Range
VOUT
0.8
-
2.5*6
V
SW average output current
ISW
-
-
3.0*7
A
ï¼6 In case set output voltage 1.6V or more, VccMin = Vout+1.2V.
ï¼ 7 Pd should not be exceeded.
Jul. 2008
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