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BD8312HFN-TR Datasheet(PDF) 7 Page - Rohm

Part # BD8312HFN-TR
Description  Output 1.5A or Less High-efficiency Step-down Switching Regulator with Built-in Power MOSFET
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD8312HFN-TR Datasheet(HTML) 7 Page - Rohm

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BD8312HFN
Technical Note
7/14
www.rohm.com
2011.04 - Rev.D
© 2011 ROHM Co., Ltd. All rights reserved.
●
Example of Application
Input: 4.5 to 10 V, output: 3.3 V / 500mA
VREG
PGND
VCC
GND
PVCC
INV
Lx
STB
VBAT=4.5～10V
1μF
GRM188B11A105KA61
（Murata）
4.7μH
1098AS-4R7M（TOKO）
1μF
GRM188B11A105KA61
（Murata）
10μF
GRM31CB11A106KA01
（Murata）
51kΩ
22kΩ
200kΩ
10kΩ
10pF
3.3V/500mA
ON/OFF
●
Reference application data 1
Fig.21 Reference application diagram
Fig.22 Power conversion efficiency
(VOUT = 3.3 V)
0
20
40
60
80
100
1
10
100
1000
OUTPUT CURRENT [mA]
VCC=4.5V
VCC=5.5V
VCC=7.5V
Fig.23 Load regulation
(VOUT = 3.3 V)
3.25
3.27
3.29
3.31
3.33
3.35
1
10
100
1000
OUTPUT CURRENT [mA]
VCC=7.5V
VCC=4.5V
VCC=5.5V


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