bsv-1.5s12r0h XP Power Limited, bsv-1.5s12r0h Datasheet - Page 24

• Manufacturer Part Number: bsv-1.5s12r0h
• Description: Pol Dc-dc Converter
• Manufacturer: XP Power Limited

<Outline>
<Standard Connection Circuit Diagram>
- It is a prerequisite for this product to be mounted onto a board, thereby heat radiatoin is done.
- When not using the ON/ OFF control, keep the On/ Off pin open.
- When not adjusting the output, keep the trim pin open.
- An input capacitor is not required, however ,when it includes inductance in input line or switching element is connected to the input side or
- GND pin (5, 8pin) is connect inside, however to secure the performance, use it with the 2 pins connected to the GND line.
- Be sure to connect the sense pin and output pin on the board. Unless the sense pin is connected, there is a possibility that a higher voltage than
- Do not wire a pattern right under the converter (first layer). For other layers wiring a pattern will be no problem.
Recommended Capacitor
Bellnix DC-DC CONVERTERS
Lot no.
70% or more of the heat radiation is done from the GND pin (5, 8pin) and the rest is done from the +Vin pin and +Vout pin.Take space of the
pattern as much as possible and design the board to make radiation easy.
the wire is long, C1 shall be required to fulfill its performance. Also we recommend a pattern with an additional C1 to lower the input impedance,
and to verify it by an actual equipment. Place the C1 to connect it with a line as thick and short as possible to the converter.
There is a built-in output capacitor, so it will operate without C2, however, required to fulfill the electrical characteristics. Place C2 as close as
posssible to the load. By adding C2, the output ripple can be lowered.
the rating voltage may be output.
BSV-3.3S12R0H
1pin mark
C1=47µF
C2=2.2µF to 200µF
(2.0)
C1: Use ones with low ESR such as organic semiconductor solid capacitor, multilayer ceramic capacitor.
C2: Use a multilayer ceramic capacitor.
1.4
9
3.0
5.5
7.4
8.5
1
12.0
7.4
12.0
14.5
8
16.75
18.75
1.4
20.0
2
27.0
1.4
7
3
1.4
6
1.4
A
9.9
4
7.4
5
Company logo
Vin
Model
name
+
C1
SW1
- Dimensions: mm
- Tolerances unless otherwise
specified: ±0.5
P-Good
On/Off
Note) Be sure to pickup at point A shown in the outline when mounting by an automated machine.
Note) Do not wire a pattern right under the converter (first layer). Since this converter has adopted a
+Vin
Pin
1
2
3
4
5
6
7
8
9
1
2
9
Avoid pickup at the component(IC) placed in the center of the board.
normal through-hole board, if there is a pinhole in the resist, it may become a problem.
P - Good
BSV-3.3S12R0H
Function
+Sense
- Sense
On/Off
+Vout
GND
+Vin
Trim
GND
b
GND
R1:Vout Down Set Resistor
5,8
6
4
3
7
-Sense
Trim
+Vout
+Sense
<Recommended Pad Layout>
R1
1.7
C2
C1 : 47µF
C2 : 22µF
A
3.0
5.5
7.7
B
8.5
12.0
12.0
18.75
B
7.7
14.5
Load
1.7
BSV-H Series
A
20.0
1.7
A
A A
BDD20080825
1.7
1.7
10.2
C
7.7
B
2