BD9B400MUV Datasheet, PDF (20/34 Pages) Rohm – Integrated MOSFET Single Synchronous Buck DC/DC Converter

BD9B400MUV
Application Example(s)
VIN
C2
C4
BD9B400MUV
PVIN
PGD
AVIN
BOOT
EN
MODE
SW
SS
FREQ
PGND
FB
AGND
R5
C8
L1
R7
R8
PGD
VOUT
C14 ^{C9 C10}
Figure 48. Application Circuit
Table 2. Recommended Component Values (VIN=5V, FREQ=H)
Reference
Designator
R5
R7
R8
C2^{(Note 7)}
C4
C8^{(Note 8)}
C9
C10
C14
L1
1.0V
100kΩ
51kΩ
200kΩ
22μF
0.1μF
0.1μF
22μF
22μF
120pF
1.0μH
1.2V
100kΩ
75kΩ
150kΩ
22μF
0.1μF
0.1μF
22μF
22μF
120pF
1.0μH
VOUT
1.5V
100kΩ
160kΩ
180kΩ
22μF
0.1μF
0.1μF
22μF
22μF
150pF
1.0μH
1.8V
100kΩ
150kΩ
120kΩ
22μF
0.1μF
0.1μF
22μF
22μF
150pF
1.0μH
3.3V
100kΩ
75kΩ
24kΩ
22μF
0.1μF
0.1μF
22μF
22μF
180pF
1.0μH
Description
-
-
-
10V, X5R, 3216
25V, X5R, 1608
-
6.3V, X5R, 3225
6.3V, X5R, 3225
-
TOKO, FDSD0630
Table 3. Recommended Component Values (VIN=5V, FREQ=L)
Reference
Designator
1.0V
1.2V
VOUT
1.5V
1.8V
3.3V
Description
R5
100kΩ
100kΩ
100kΩ
100kΩ
100kΩ
-
R7
51kΩ
75kΩ
160kΩ
150kΩ
75kΩ
-
R8
200kΩ
150kΩ
180kΩ
120kΩ
24kΩ
-
C2^{(Note 7)}
22μF
22μF
22μF
22μF
22μF
10V, X5R, 3216
C4
0.1μF
0.1μF
0.1μF
0.1μF
0.1μF
25V, X5R, 1608
C8^{(Note 8)}
0.1μF
0.1μF
0.1μF
0.1μF
0.1μF
-
C9
22μF
22μF
22μF
22μF
22μF
6.3V, X5R, 3225
C10
22μF
22μF
22μF
22μF
22μF
6.3V, X5R, 3225
C14
100pF
100pF
120pF
120pF
120pF
-
L1
1.0μH
1.0μH
1.0μH
1.0μH
1.0μH
TOKO, FDSD0630
(Note 7) For capacitance of input capacitor take temperature characteristics, DC bias characteristics, etc. into consideration to set minimum value to no
less than 10μF.
(Note 8) For capacitance of bootstrap capacitor take temperature characteristics, DC bias characteristics, etc. into consideration to set minimum value
to no less than 0.047μF.
※Evaluation using the actual machine must be done for above constant is only a value on our evaluation board.
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TSZ02201-0J3J0AJ01200-1-2
22.Apr.2016 Rev.002