BD9109FVM-LB Datasheet, PDF (1/23 Pages) Rohm – Synchronous Buck Converter Integrated FET

Datasheet
Synchronous Buck Converter
Integrated FET
BD9109FVM-LB
General Description
This is the product guarantees long time support in
Industrial market.
ROHM’s high efficiency step-down switching regulators
(BD9109FVM-LB) is a power supply designed to
produce a low voltage including 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
„ Long Time Support Product for Industrial
Applications.
„ Fast Transient Response with Current Mode PWM
Control System.
„ Highly Efficiency with Synchronous Rectifier
(Nch/Pch FET) and SLLM^TM (Simple Light Load
Mode)
„ Soft-Start Function.
„ Thermal Protection and ULVO Functions.
„ Short-Current Protection Circuit with Time Delay
Function.
„ Shutdown Function
Key Specifications
„ Input Voltage Range:
„ Output Voltage Range:
„ Output Current:
„ Switching Frequency:
„ Pch FET On Resistance:
„ Nch FET On Resistance:
„ Standby Current:
„ Operating Temperature Range:
4.5V to 5.5V
3.30V ± 2%
0.8A(Max)
1MHz(Typ)
350m(Typ)
250m(Typ)
0μA (Typ)
-25°C to +85°C
Package
MSOP8
W(Typ) x D(Typ) x H(Max)
2.90mm x4.00mm x 0.90mm
Applications
„ Industrial Equipment
„ Power supply for LSI including DSP, Micro computer
and ASIC
„ Secondary Power Supply
MSOP8
Typical Application Circuit
VCC
Cin
VCC,PVCC
L
EN
SW
VOUT
VOUT
VOUT
ITH
CO
GND,PGND
RITH
CITH
Figure 1. Typical Application Circuit
〇Product structure : Silicon monolithic integrated circuit
.www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111 • 14 • 001
〇This product has no designed protection against radioactive rays
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TSZ02201-0J4J0AJ00600-1-2
21.Feb.2014 Rev.002