BELLNIX High Efficiency, Ultra Small Size, Non-Isolated Type POL DC-DC Converter
RoHS
10-15 Watt BSI Series
Compliance
Ultra High Efficiency POL DC-DC Converters/ BSI 10-15Watt Series
Ultra High Efficiency (90-95%), Minimum Size Step-Down DC-DC Converter
Output: +2.5V (+1.5V to +2.5V)
Output: +3.3V (+1.8V to +3.3V)
Output: +5.0V (+3.0V to +5.0V)
Input: +2.5V, +3.3V, +5V
Input: +5V, +12V
Input: +6V, +12V, +15V
Models
Input V
Output V
BSI-Series
Vdc
Vdc
2.5
BSI-2.5S4R0A
+2.5 to +5.25
(1.5-2.5)
BSI-2.5S4R0FA
3.3
BSI-3.3S3R0A
+4.75 to +13.6
(1.8-3.3)
BSI-3.3S3R0FA
5.0
BSI-5.0S3R0A
+6.0 to +16.5
(3.0-5.0)
BSI-5.0S3R0FA
Line Reg
A
%(typ.)
Load Reg Ripple/Noise Efficiency
%(typ.) mVpp(typ.) %(typ.)
0-4
0.2
0.2
0.2
0.3
40
90
91
0-3
50
0.2
0.2
95
(DIP type)
BSI-2.5S4R0FA
BSI-3.3S3R0FA
BSI-5.0S3R0FA
6.5typ
- High Reliability, High Performance
- RoHS Compliance
0.8 2.5typ
Bellnix
1
5
5
18
18
14
0.64
22.86
P2.54×4=10.16
14
51max
Bellnix
1
19
15.24
C/L
11.3max
C/L
36
10.8 max
51max
(h=11.3max.)
(h=9.3typ.)
(h=9.3typ.)
21.5max
(SIP type)
BSI-2.5S4R0A (t=9.8typ.)
BSI-3.3S3R0A (t=10.3typ.)
BSI-5.0S3R0A (t=8.8typ.)
(Temp. derating required)
- Note!
Output I
Note 1: The output voltage inside the ( ) indicates the adjustable range.
Note 2: External capacitors are required.
Note 3: Suffix "A" stands for verision.
21.5max
- Input Voltage Range 2.5V-16.5V
- Output Voltage Range 1.5V-5V
- Latest Technology,Synchronous
Rectification Circuit
- Efficiency 90%-95%
- Adjustable Output Voltage
- Non-Isolated Type Converter
- Short Circuit, Over-Current
Protection
- No Electrolytic Capacitor,
No Tantalum Capacitor
- Heat Sink Not Required
- Minimum Size
- Remote ON/OFF Control
- Low Standby Current 100µA
(3A output type product)
- MTBF 1,000,000Hrs
- Operating Temp. Range
-10°C to +70°C
2.25
P2.54×4=10.16
This catalogue is an outline of the products.
When designing, be sure to refer to the
data sheets.
Weight: 10g typ.
Dimensions: mm
- External resinous coating
- Tolerances unless otherwise specified: ±0.5
pin Function
1
+Vin
2
+Vin
3
-Vin
4
-Vin
5 on/off
14 V.ADJ
15 -Vout
16 -Vout
17 +Vout
18 +Vout
22.86
2.54×4=10.16
2.54×4=10.16
0.64
Weight: 10g typ.
Dimensions: mm
- External resinous coating
- Tolerances unless otherwise specified: ±0.5
pin Function
1
+Vin
+Vin
2
-Vin
3
-Vin
4
on/off
5
14 V.ADJ
15 -Vout
16 -Vout
17 +Vout
18 +Vout
NC
19
36
NC
- External Capacitors (SH, FA type OS-CON Recommended)
3.3V, 5V Output Product
2.5V Output Product
C1=100µF20WV×2pcs or more
+Vin
1
FET1
18
2
C1
-Vin
3
1
7
16 C2
PWM.OCP.CONT
ON/OFF CONT
4
FET2
15
ON/OFF 5
ON = Open
OFF= Short
(0 to 0.5V)
C1=220µF10WV×2pcs or more
C2=220µF10WV×1pcs or more
C2=330µF6.3WV×2pcs or more
+Vout
- ON/OFF Control
ON/OFF control is controlled by opening and shortening between
C3
Load 5pin(ON/OFF) and 3, 4pin (-Vin) pin.
- Adjustable Output Voltage
The output voltage is adjustable by connecting a resistor between
-Vout
14pin (V.ADJ) and 17, 18pin (+Vout).
When 14pin is open, the rated output voltage is as follows
14
V.adj
Open = 2.5V,3.3V,5V
BSI-2.5S = +2.5V±5%
BSI-3.3S = +3.3V±5%
BSI-5.0S = +5.0V±5%
- 0.6V or more Input/ Output voltage difference is required for output
current 4A type.
