BM1Q021FJ Datasheet, PDF (1/31 Pages) Rohm – Quasi-Resonant Control type

Datasheet
AC/DC Drivers
Quasi-Resonant Control type
DC/DC Converter IC
BM1Q021FJ /BM1Q041FJ
General Description
The quasi-resonant controller typed AC/DC converter IC
BM1Q021FJ/BM1Q041FJ provides an optimum system for
all products that include an electrical outlet.
Quasi-resonant operation enables soft switching and helps
to keep EMI low.
With MOSFET for switching and current detection resistors
as external devices, a higher degree of design freedom is
achieved.
As BM1Q021FJ/BM1Q041FJ built in HV starter circuit, it
contributes to low consumption power and high speed start.
Because the built-in burst mode is reduced switching loss
and IC consumption current is low, Stand-by power is very
low.
Because BM1Q021FJ/BM1Q041FJ built-in soft-start, burst
mode, over current limiter which is cycle-by-cycle, over
load protection, over voltage protection, CS open protection
and so on, BM1Q021FJ/BM1Q041FJ are highly safety.
Key Specifications
 Operating Power Supply Voltage Range:
:
VCC：8.9V to 26.0V
VH：
to 600V
 Operating Current:
Normal：0.60mA (Typ.)
Burst ： 0.35mA(Typ.)
 Max frequency:
120kHz(Typ.)
 Operate temperature range:
-40℃ to +105℃
Features
 Quasi-resonant method
 Built-in 650V tolerate start circuit
 Low power when load is light ( Burst operation)
 Maximum frequency control (120kHz)
 Frequency reduction function
 AC voltage correction function
 VCC pin : under voltage protection
 VCC pin : overvoltage protection
 Over-current protection (cycle-by-cycle)
 OUT pin : H voltage 12V clamp
 Soft start
 ZT trigger mask function
 ZT Over voltage protection[BM1Q021 Auto-restart]
 FB Over Load protection [Auto-restart]
 CS pin open protection [Auto-restart]
Package
SOP-J8
4.90mm × 6.00mm × 1.65mm
(Typ.) (Typ.)
(Max.)
Typical Application Circuit
Applications
AC adapters and household appliances (printer, TV,
vacuum cleaners, air cleaners, air conditioners, IH
cooking heaters etc.)
Line Up
IC
BM1Q021FJ
BM1Q041FJ
ZT OVP
Auto-restart
None
Figure 1. Application Circuit
○Product structure：Silicon monolithic integrated circuit
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TSZ22111・14・001
○This product is not designed protection against radioactive rays
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TSZ02201-0F1F0A200280-1-2
27.Sep.2016 Rev1