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PDF BM1Q002FJ Data sheet ( Hoja de datos )

Número de pieza BM1Q002FJ
Descripción DC/DC Converter IC
Fabricantes ROHM Semiconductor 
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Datasheet
AC/DC Drivers
Quasi-Resonant Control type
DC/DC Converter IC
BM1Q00XFJ Series
General Description
The quasi-resonant controller typed AC/DC converter IC
(BM1Q00XFJ series) 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 BM1Q00XFJ series 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 BM1Q00XFJ series 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, BM1Q00XFJ series are highly safety.
Key Specifications
Operating Power Supply Voltage Range:
: VCC8.9V to 26.0V
VH
to 600V
Operating Current:
Normal0.60mA (Typ.)
Burst 0.35mA(Typ.)
Max frequency:
120kHz(Typ.)
Operate temperature range:
-40to +85
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
FB Over Load protection [Auto-restart]
CS pin open protection [Auto-restart]
Package
SOP-J8
4.90mm × 3.90mm × 1.65mm
(Typ.) (Typ.)
(Typ.)
Typical Application Circuit
Applications
AC adapters and household appliances (printer, TV,
vacuum cleaners, air cleaners, air conditioners, IH
cooking heaters etc.)
Line Up
IC
BM1Q001FJ
BM1Q002FJ
VCC OVP
Auto restart
Latch
ZT OVP
None
Latch
Fig 1. Application Circuit
Product structureSilicon monolithic integrated circuit
.www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/25
TSZ02201-0F2F0A200110-1-2
17.JUN.2015 Rev.003

1 page




BM1Q002FJ pdf
BM1Q00XFJ Series
Block Diagram
+ FUSE
AC
85-265Vac
-
Filter
Diode
Bridge
86
Starter
NOUT
+
-
+
-
+
-
13.0V/
8.7V
+
-
13.5V/
8.2V
+
-
27.5V
1+
-
7V
100mV
/200mV
AND
ZT Blanking
OUT(H->L)
0.60us
NOUT
1 shot
TimeOut
( 15 us )
Max frequency
control
OR
AND
OR
30k
2
+
-
0.50V.
+
-
BURST_OH
delay Timer FBOLP_OH Stop Timer
(64ms)
(512ms)
4.0V Regulator
12V Clamp
Circuit
Internal
Supply
OSC OSC
SQ
FBOLP_OH AND
R
POUT
PRE
Driver
NOUT
5
1MΩ
300kΩ
100kΩ
FB/4 -
0.50V -
+
Soft Start
SS SS SS SS
0.5ms 1ms 2ms 4ms
CURRENT SENSE (V-V Change)
Normal : ×1.0
Leading Edge
Blanking
3
4
Fig-4 Block Diagram
Datasheet
ERROR
AMP
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/25
TSZ02201-0F2F0A200110-1-2
17.JUN.2015 Rev.003

5 Page





BM1Q002FJ arduino
BM1Q00XFJ Series
Datasheet
For Capacitor Value of VCC pin
For stable operation of the IC, please set the 1uF or higher capacitor value of VCC pin. When the VCC capacitor
terminal is too large, response of the VCC pin to the Secondary output is slows down. Please be careful.
If the degree of the transformer coupling is low, since a large surge occurs to the VCC pin, the IC may be destroyed. In
this case, please attach a resistor which is from 10to 100to the path between the capacitor and diode at the back of
the auxiliary winding. Please set the resistance value in order that surge of VCC pin does not exceed the absolute
maximum rating of the VCC pin by performing the waveform evaluation of VCC pin.
For settings VCC OVP voltage protection when Vout (Secondary output) is increased
VCC pin voltage is determined by the transformer ratio and Vout ( Secondary output ).Therefore, when the Secondary
output is large, it is possible to protect IC by VCCOVP. Setting VCCOVP protection is below.
Vout
Np Ns
Nb
Fig-12 How to Set VCCOVP
VCC voltage = Vout×Nb/Ns -VF (Vout:Secondary output, Nb:Number of auxiliary winding, Ns:Number of secondary
winding)
If you wish to apply protection when it becomes Secondary output × 1.3, please set the number of turns so that
1.3×(Vout×(Nb/Ns)-VF) > VOVP1
Because there is a blanking time of TLATCH (typ = 100us) to VCCOVP protection, VCCOVP protection is not detected to
momentary surge noise of the VCC pin, However, VCCOVP is detected when VCC voltage is higher than the VOVP1 at
the period of more than VTLATCH, due to low degree of transformer coupling or other influences
In addition, as a protection of Secondary output, ZTOVP is also available. ZTOVP is described in (6).
www.rohm.com
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
11/25
TSZ02201-0F2F0A200110-1-2
17.JUN.2015 Rev.003

11 Page







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