BD89630EFJ_12 Datasheet, PDF (1/25 Pages) Rohm – Synchronous Buck Converter integrated FET

Datasheet
2.7V to 5.5V, 2A 1ch
Synchronous Buck Converter integrated FET
BD89630EFJ
●General Description
ROHM’s high efficiency step-down switching regulator
BD89630EFJ is a power supply designed to produce a
low voltage including 1 volts from 5.5/3.3 volts power
supply line. Offers high efficiency with 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/Pch FET)
 Incorporates soft-start function.
 Incorporates thermal protection and ULVO
functions.
 Incorporates short-current protection circuit with
time delay function.
 Incorporates shutdown function
●Applications
Power supply for LSI including DSP, Micro computer
and ASIC
●Key Specification
 Input voltage range:
 Output voltage range:
 Average output Current:
 Switching frequency:
 Pch FET ON resistance:
 Nch FET ON resistance:
 Standby current:
 Operating temperature range:
2.7V to 5.5V
1.0V to 2.5V
2A(Max.)
1MHz(Typ.)
145mΩ(Typ.)
80mΩ(Typ.)
5μA (Typ.)
-25℃ to +85℃
●Package
HTSOP-J8
(Typ.) (Typ.) (Max.)
4.90mm x 6.00mm x 1.00mm
●Typical Application Circuit
HTSOP-J8
VCC
Cin
L
EN
VCC
SW
VADJ
ADJ
COMP
GND
CO
RCOMP
CCOMP
Fig.1 Typical Application Circuit
VOUT
RFB1
VADJ
RFB2
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
©2012 ROHM Co., Ltd. All rights reserved.
TSZ22111ï½¥14ï½¥001
○This product is not designed protection against radioactive rays.
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TSZ02201-0J3J0AJ00270-1-2
2012.08.28 Rev.001