BD91361MUV Datasheet, PDF (1/18 Pages) Rohm – Output 2A More High-efficiency Step-down Switching Regulator with Built-in Power MOS FET

Single-chip Type with Built-in FET Switching Regulators
Output 2A More
High-efficiency Step-down Switching Regulator
with Built-in Power MOS FET
BD91361MUV
No.10027EAT44
●Description
ROHM’s high efficiency step-down switching regulator BD91361MUV 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 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 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
●Applications
Power supply for LSI including DSP, Micro computer and ASIC
●Absolute maximum rating (Ta=25℃)
Parameter
VCC Voltage
PVCC Voltage
Symbol
VCC
PVCC
Ratings
Unit
-0.3～+7 *¹
V
-0.3～+7 *¹
V
BST Voltage
VBST
-0.3～+13
V
BST_SW Voltage
EN Voltage
VBST-SW
-0.3～+7
V
VEN
-0.3～+7
V
SW,ITH Voltage
Power Dissipation 1
Power Dissipation 2
Power Dissipation 3
Power Dissipation 4
VSW, VITH
-0.3～+7
V
Pd1
0.34 *²
W
Pd2
0.70 *³
W
Pd3
2.21 *⁴
W
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, 1st and 4th copper foil area : 10.29mm² , 2nd and 3rd copper foil area : 5505mm²
*5 4-layer. mounted on a 74.2mm×74.2mm×1.6mm glass-epoxy board, occupied area by copper foil : 5505mm², in each layers
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2010.06 - Rev.A