BD9134MUV_0909 Datasheet, PDF (1/18 Pages) Rohm – Output 2A or More High-efficiency Step-down Switching Regulator with Built-in Power MOSFET

Single-chip Type with Built-in FET Switching Regulator Series
Output 2A or More High-efficiency
Step-down Switching Regulator
with Built-in Power MOSFET
BD9134MUV
No.09027EBT15
●Description
ROHM’s high efficiency step-down switching regulator BD9134MUV is a power supply designed to produce 3.3 volts from
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.
●Features
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)
and SLLM^TM (Simple Light Load Mode)
3) Incorporates soft-start function.
4) Incorporates thermal protection and UVLO 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
●Use
Power supply for LSI including DSP, Micro computer and ASIC
●Absolute Maximum Rating (Ta=25℃)
Parameter
Symbol
Limits
Unit
VCC Voltage
PVCC Voltage
VCC
-0.3～+7 *¹
V
PVCC
-0.3～+7 *¹
V
BST Voltage
VBST
-0.3～+13
V
BST_SW Voltage
VBST-SW
-0.3～+7
V
EN Voltage
VEN
-0.3～+7
V
SW,ITH Voltage
VSW, VITH
-0.3～+7
V
Power Dissipation 1
Pd1
0.34 *²
W
Power Dissipation 2
Pd2
0.70 *³
W
Power Dissipation 3
Pd3
1.21 *⁴
W
Power Dissipation 4
Pd4
3.56 *⁵
W
Operating temperature range
Topr
-40～+105
℃
Storage temperature range
Tstg
-55～+150
℃
Maximum junction temperature
Tj
+150
℃
*1 Pd should not be exceeded.
*2 IC only
*3 1-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm²
*4 4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 10.29mm² , in each layers
*5 4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 5505mm², in each layers
●Operating Conditions (Ta=-40～+105℃)
Parameter
Symbol
Limits
Min.
Typ.
Max.
Unit
Power Supply Voltage
VCC
4.5
5
5.5
V
PVCC
4.5
5
5.5
V
EN Voltage
Output Current
VEN
0
ISW
-
-
5.5
V
-
3.0*⁶
A
*6 Pd should not be exceeded.
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2009.09 - Rev.B