BD9859EFJ Datasheet, PDF (7/16 Pages) Rohm – Simple Step-down Switching Regulators with Built-in Power MOSFET

BD9859EFJ
Technical Note
●Example of Reference Application Circuit (Input 12V, Output 5.0V/ 2.5A)
CBST
VBAT
CBAT
0.022 uF
JEN
REN 0 Ω
0 Ω ^SW
EN
CEN open
22 uF/ 16V
GRM31CB31C226KE15
(murata)
VCC VCC BST
EN
4.7 uH
10 uF/ 6.3V
(FDV0630 - 4R7M)
GRM219B30J106KE18
(murata)
Lx
GND
VC
FB
L
VOUT
CC1 1000 pF
RFRA
COUT
D
CC2
0Ω
RSX301-LA30 (ROHM)
RC 7.5 kΩ
open
RINV1 120 kΩ
RINV2 30 kΩ
●Reference Application Data (Example of Reference Application Circuit)
100.0
80.0
60.0
40.0
20.0
0.0
0
VCC=7V
VCC=10V
VCC=12V
VCC=14V
500
1000
1500
2000
2500
3000
Load Current Io [mA]
Fig.19 Electric Power Conversion
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7/15
2010.02 - Rev.A