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BM2P047F Datasheet(PDF) 7 Page - Rohm

Part # BM2P047F
Description  PWM type DC/DC converter IC Included a Switching MOSFET
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BM2P047F Datasheet(HTML) 7 Page - Rohm

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Datasheet
Datasheet
BM2PXX5F/BM2PXX6F/BM2PXX7F/BM2PXX8F Series
TSZ02201-0F2F0A200210-1-2
28.Oct.2016.Rev.002
© 2012 ROHM Co., Ltd. All rights reserved.
www.rohm.com
TSZ22111・15・001
●Block Description
(1) Start circuit (DRAIN: Pin 4)
This IC has a built-in start circuit. It enables low standby mode electricity and high speed start.
After start up, consumption power is determined by idling current I
START3 (Typ=10uA) only.
Reference values of starting time are shown in Figure 6. When C
vcc=10uF it can start in less than 0.1 sec.
+
-
VCCUVLO
VCC
Cvcc
DRAIN
FUSE
+
-
Diode
Bridge
SW1
AC
85- 265 Vac
Figure 4. Block Diagram of Start Circuit
Figure 5. Start Current vs VCC Voltage
Figure 6. Start Time (reference value)
* Start current flows from the DRAIN pin
Ex) Consumption power of start circuit only when Vac=100V
PVH=100V*√2*10uA=1.41mW
Ex) Consumption power of start circuit only when Vac=240V
PVH=240V*√2*10uA=3.38mW
0.0 
0.1 
0.2 
0.3 
0.4 
0.5 
0.6 
0.7 
0.8 
0.9 
1.0 
0
5
10
15
20
25
30
35
40
45
50
Cvcc  [uF]


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