BD7682FJ-LB_16 Datasheet, PDF (1/31 Pages) Rohm – Low Noise Quasi-Resonant Control DC/DC converter IC for AC/DC Converter

Datasheet
Low Noise Quasi-Resonant Control
DC/DC converter IC for AC/DC Converter
BD7682FJ-LB BD7683FJ-LB BD7684FJ-LB BD7685FJ-LB
General Description
This is the product guarantees long time support in the
Industrial market.
BD768xFJ series is a Quasi-resonant controller type
DC/DC converters that provide an optimum system for
all products that include an electrical outlet.
Quasi-resonant operation enables soft switching and
helps to keep EMI low. Design with a high degree of
flexibility is achieved with switching MOSFETs and
current detection resistors as external devices.
The built-in brown out function monitors the input
voltage as part of system optimization. The burst mode
function reduces input power at low power.
BD768xFJ series include various protection functions,
such as a soft start function, burst function, per-cycle
over-current limiter function, overvoltage protection
function, overload protection function, and brown out
function.
BD768xFJ series include a gate-clamp circuit for
optimal driving SIC-MOSFET.
Features
 Pin 8 : SOP-J8 Package
(6.00mm × 4.90mm : 1.27mm pitch <TYP>)
 Quasi-resonant type (low EMI)
 Frequency reduction mode
 Low current consumption (19µA), during standby
 Low current consumption when no load (burst
operation when light load)
 Maximum frequency (120kHz)
 CS Pin Leading-Edge Blanking
 VCC UVLO (Under Voltage Drop Out protection)
 VCC OVP (Over Voltage Protection)
 Per-cycle over-current protection circuit
 Soft start
 ZT trigger mask function
 Voltage protection function (brown out)
 ZT OVP (Over Voltage Protection)
 Gate-clamp circuit
Key Specifications
 Operating Power Supply Voltage Range:
VCC 15.0V to 27.5V
 Normal Operating Current:
0.80mA(Typ)
 Burst Operating Current:
0.50mA(Typ)
 Maximum Frequency:
120kHz(Typ)
 Operating Temperature:
-40°C to +105°C
Package 4.90mm x 6.00mm x 1.65mm pitch 1.27mm
(Typ.) (Typ.)
(TYP.)
(TYP.)
SOP-J8
4.90mm x 6.00mm x 1.65mm
Lineup
BD7682FJ
BD7683FJ
BD7684FJ
BD7685FJ
FBOLP
AutoRestart
Latch
AutoRestart
Latch
VCCOVP
Latch
Latch
AutoRestart
AutoRestart
Applications
Industrial equipment, AC Adaptor, Household appliances
Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
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TSZ02201-0F1F0A200050-1-2
29.Jun.2016. Rev.002