BD91361MUV_14 Datasheet, PDF (1/27 Pages) Rohm – Synchronous Buck Converter with Integrated FET

Datasheet
2.7V to 5.5V, 4A 1ch
Synchronous Buck Converter with
Integrated FET
BD91361MUV
General Description
BD91361MUV is ROHM’s high efficiency step-down
switching regulator designed to provide a voltage as
low as 0.8V from a supply voltage of 5.5V/3.3V. It
offers high efficiency by using pulse skip control
technology and synchronous switches, and provides
fast transient response to sudden load changes by
implementing current mode control.
Features
 Fast Transient Response because of Current Mode
PWM Control System
 High Efficiency for All Load Ranges because of
Synchronous Rectifier (Nch/Nch FET)
and SLLM^TM (Simple Light Load Mode)
 Soft-Start Function
 Thermal Shutdown and UVLO Functions
 Short-Circuit Protection with Time Delay Function
 Shutdown Function
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°C to +105°C
Package
W(Typ) x D(Typ) x H(Max)
Applications
Power Supply for LSI including DSP, Microcomputer
and ASIC
VQFN020V4040
4.00mm x 4.00mm x 1.00mm
Typical Application Circuit
Rf
Cf
VCC
CIN
EN
PVCC
VCC
ADJ
CBST
ITH
RITH
VID<1> VID<0>
L
SW
CITH
CO
VCC
VOUT
R2
R1
Figure 1. Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○ This product has no designed protection against radioactive rays
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TSZ02201-0J3J0AJ00200-1-2
06.Oct.2014 Rev.002