bp5233a33 ROHM Co. Ltd., bp5233a33 Datasheet - Page 5

• Manufacturer Part Number: bp5233a33
• Description: Dc/dc Converter
• Manufacturer: ROHM Co. Ltd.

(1) The basic application examples are shown in Fig.3. The externally installed parts are only the input and output
(2) Switching on and off the output voltage is allowed. The output can be switched off by making pin 7 to be low or
(3) Fine adjustment of the output voltage is allowed. The fine adjustment of output voltage can be performed from
(4) Be sure to use a fuse for the safety.
Basic application
Output ON / OFF control
Output voltage fine adjustment
Circuit operation
V
V
V
smoothing capacitors.
open (high impedance). (See Fig.4)
pin 1 via the resistor by connecting the output terminal (pin2, 3) and GND. (See Fig.5)
IN
IN
IN
FUSE
FUSE
FUSE
V
V
It is recommended that the output voltage should be adjusted
within the range of ±10% of the rated output voltage, so that
the performance of the module can fully be exhibited.
O'
O'
10
10
10
=V
value setting equations
+
+
−
1000µF
1000µF
1000µF
O
9
9
9
BP5232A25 / BP5232A33
BP5232A25 / BP5232A33
BP5232A25 / BP5232A33
SW
SW
1+
7
7
7
R1
R2
6
6
6
5
5
5
R1+R2 ≤ 50kΩ
4
4
4
470µF
3
3
3
+
2
2
2
+
+
470µF
470µF
1
1
1
R1
V
R2
O
V
V
V
O
Fig.3
O
O '
Fig.4
Fig.5
V
IN
V
V
IN
FUSE
IN
FUSE
FUSE
11
11
11
10
10
10
+
+
+
1000µF
1000µF
1000µF
9
9
9
BP5233A33 / BP5234A33
BP5233A33 / BP5234A33
BP5233A33 / BP5234A33
SW
SW
7
7
7
6
6
6
5
5
5
4
4
4
3
3
3
2
2
2
+
+
470µF
470µF
1
1
1
Rev.C
R1
V
R2
O
V
V
V
O
O
O '
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