BD91361MUV_12 Datasheet, PDF (1/23 Pages) Rohm – 2.7V to 5.5V, 4A 1ch Synchronous Buck Converter Integrated FET

Datasheet
2.7V to 5.5V, 4A 1ch
Synchronous Buck Converter Integrated FET
BD91361MUV
●General 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
 Offers fast transient response with current mode
PWM control system.
 Offers highly efficiency for all load range with
synchronous rectifier (Nch/Nch FET)
and SLLM^TM (Simple Light Load Mode)
 Incorporates soft-start function.
 Incorporates thermal protection and ULVO
functions.
 Incorporates short-current protection circuit with
time delay function.
 Incorporates shutdown function Icc=0µA (Typ.)
●Key Specifications
 Input voltage range:
 Output voltage range:
 Output current:
 Switching frequency:
 High side FET ON resistance:
 Low side FET ON resistance:
 Standby current:
 Operating temperature range:
2.7V to 5.5V
0.8V to 3.3V
4.0A (Max.)
1MHz(Typ.)
60mΩ(Typ.)
55mΩ(Typ.)
0μA (Typ.)
-40℃ to +105℃
●Package
VQFN020V4040:
Typ.) (Typ.) (Max.)
4.00mm x 4.00mm x 1.00mm
●Applications
Power supply for LSI including DSP, Micro computer
and ASIC
●Typical Application Circuit
VQFN020V4040
VCC
Cin
VOUT
R2
R1
RITH
CITH
Rf
Cf
EN
PVCC
VCC
ADJ
ITH
VID<1> VID<0> GND,PGND ^SW
VCC ^VCC
Fig.1 Typical Application Circuit
CBST
L
ESR
CO
VOUT
RO
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays.
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TSZ02201-0J3J0AJ00200-1-2
02.MAR.2012 Rev.001