bsv-1.5s12r0h XP Power Limited, bsv-1.5s12r0h Datasheet - Page 25

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

When using at 3.3V without adjusting output voltage, keep Trim pin (7pin) open. By connecting a resistor between Trim pin (7pin) and -Sense pin,
the output voltage can be adjusted within the range of 0.8-3.3V. (Connect -Sense pin to GND)
When adjusting the output voltage, place the Rx close to the converter and make the wiring of Rx as short as possible. If the Trim pin catches
noise, malfunction may occur.
To calculate the external resistance, please refer to the equation below. After calculating the external resistance, please check the output voltage
and adjust the resistance value.
- ON/ OFF Fuction
- Method of On/ OFF Control
<Adjusting Output Voltage>
<ON/ OFF Control>
<P-Good Function>
Bellnix DC-DC CONVERTERS
By using the ON/ OFF control function, ON/ OFF of the output without intermitting the input can be controlled.
When not using the ON/ OFF function, keep the ON/ OFF pin open.
Between ON/ OFF pin (9pin) and GND (8pin)
Open
Short (0-0.7V 1mA max.) : Output=OFF
By utilizing this P-Good pin, the output condition of the converter can be obtained. This pin
is internally pulled up by the 10k ohm resistor connected to the +Vin pin.
It will be high at |Output voltage-Set voltage| ≦0.3V typ.
However, under the conditions written below, even if the output voltage is within this range,
it may become low.
- When the input and output difference is Vin-Vout<0.5
- When the input voltage is below 3V
- When the output current is at over-current state.
- When the IC temperature is above 100°C
To set within the range of 0.8V-3.3V
R1=100 ohm, R2=300 ohm, R3=22k ohm, R4=86.7k ohm, I1=0.0286mA, Vout=Requested output voltage (V)
(Be sure to adjust the units of resistor to ohm and current to A, when calculating.)
Rx
Vout
I1
=
(
=
R
1
R
+
1
: Output=ON
R
R
+
2
2
R
R
GND
)
2
2
×
×
×
R
5,8
R
4
R
R
R1
High-Speed Response, Step-Down DC-DC Converter
4
×
4
4
R3
×
I
×
+
1
Vout
(
(
−
R
R
R
+Vout
4
3
+Sense
Trim
7
-Sense
6
3
3
2
+
+
×
Rx
Rx
Vout
)
)
Rx
×
I
−
1
R
( 3
ohm
or
Ex.)
Output Voltage
on/off
)
Desired
Vout(V)
+Vin
3.3
2.5
2.0
1.8
1.5
1.2
1.0
0.8
1
9
GND
10k ohm
5,8
(k ohm)
Open
246.7
110.7
81.6
27.4
15.6
5.7
Rx
50
Ultra High Efficiency 93%
P-Good
+Vin
1
2
GND 5,8
10k ohm
BDD20080825
BSV-H Series
3