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BD9139MUV fiches techniques PDF

ROHM Semiconductor - 3A 1ch Synchronous Buck Converter

Numéro de référence BD9139MUV
Description 3A 1ch Synchronous Buck Converter
Fabricant ROHM Semiconductor 
Logo ROHM Semiconductor 





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BD9139MUV fiche technique
Datasheet
2.7V to 5.5V, 3A 1ch
Synchronous Buck Converter with
Integrated FET
BD9139MUV
General Description
The BD9139MUV is ROHM’s high efficiency
step-down switching regulator designed to produce 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 Switches (Nch/Nch FET) and SLLMTM
(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
3.0A (Max)
1MHz(Typ)
100m(Typ)
80m(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
VQFN016V3030
3.00mm x 3.00mm x 1.00mm
Typical Application Circuit
Rf C1
VCC
CIN
EN
PVCC
VCC
ADJ
CBST
L
ITH GND, PGND SW
RITH
CO
VOUT
CITH
R2
Figure 1. Typical Application Circuit
R1
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/22
TSZ02201-0J3J0AJ00170-1-2
03.Oct.2014 Rev.002

PagesPages 25
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