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PDF FP131 Data sheet ( Hoja de datos )
| Número de pieza | FP131 | |
| Descripción | Over Current Protection IC | |
| Fabricantes | Feeling Technology | |
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Over Current Protection IC
FP131
General Description
FP131 is a current detection and over current protection IC. It includes a current shunt
comparator and shutdown comparator with a precision shunt regulator like FP431. The rail current
detection gain can be adjusted with three external resistors. The regulator output CSO pin is
connected to a shutdown comparator for driving a protection circuit like a photo-coupler to shutdown
the converter’s primary side PWM IC when over current occurs. The voltage shunt regulator has a
1.25V reference for switching power supply secondary output voltage feedback.
FP131 can be used for OCP and output voltage feedback function with few external parts. It is
suitable for application in secondary main rail power supply of SPS or isolated fly-back DC-DC
converter.
Features
Wide Operating Voltage Range: +2.7V~ +28V
Comparator Reference Voltage: 1.25V (2%)
Independent Shunt and Supply Voltages
Adjustable Sense Gain
Low Input Offset Voltage
Output Sink Current Capability up to 16mA
Package: SOP-8L
Typical Application Circuit
SPS
DC-DC Converter
Isolated Fly-back DC-DC Converter
Current Sense Instrument
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
1/11
Rev. 0.9
1 page  
FP131
Recommended Operating Conditions
Parameter
Symbol
Conditions
Supply Voltage
Vcc
Operating Temperature
Min.
2.7
-20
Typ.
Max.
28
+85
Unit
V
°C
DC Electrical Characteristics
(VCC=5V, TA= -20°C~+85°C, VIP=12V, ROUT=125kΩ unless otherwise noted)
Parameter
Symbol
Conditions
Min.
Current Shunt Comparator Section
Full Scale Sense Voltage
Common-Mode Input Voltage
Common-Mode Rejection
Input Offset Voltage vs Temp
Input Offset Voltage vs VCC
Input Bias Current
Non-linearity Error
Total Output Error
VSENSE
VCM
CMRR
VOFFSET
(TA)
VOFFSET
(vcc)
IBIAS
NLE
TOE
VSENSE=VIP－VIN
VIP=2.7V to 28V,
VSENSE=50mV
TMIN to TMAX
VIN=2.7V to 28V,
VSENSE=50mV
VIP,VIN
VSENSE=10mV to 150mV
VSENSE=100mV
2.7
100
Output Impedance
Voltage Swing to VCC
Voltage Swing to VCM
Bandwidth
Settling Time
Total Output-Current Noise
ROUT
VSCC
VSCM
BW
TS
INOISE
ROUT=125KΩ
5V Step, ROUT=125KΩ
BW=100KHz
Photo-drive Comparator Section
Input Offset Voltage
Input Bias Current
Common-Mode Voltage (IN-)
Voltage Gain
Large Signal Response Time
VOFFSET
IBIAS
VCM
AV
-0.3
50
Response Time
Output Sink Current
Saturation Voltage
Output Leakage Current
Reference Section
ISINK
VSAT
VREF-VIN-=-0.75V,
VOUT ≦ 1.0V
VREF-VIN-=-0.75V
ISINK ≦ 10mA
VREF-VIN- = 1.25V
VOUT = 28V
Reference Voltage (2%)
Line Regulation
VREF
TA=25℃
3V≦VCC ≦28V
1.225
Total Device Section
Power Supply Current
ICC VCC=30V
Typ. Max.
100 500
28
120
4
2.5
2
1||5
VCC-0.8
VCM-0.5
32
30
3
10
±1
±2
1.0 5.0
25 250
- VCC-1.5
200
300
1.3
16
1000
0.1 1
1.25 1.275
2 15
400
Unit
mV
V
dB
µV / °C
µV / V
µA
%
%
GΩ||pF
V
V
kHz
μS
nA
mV
nA
V
V/mV
nS
μS
mA
mV
μA
V
mV
μA
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
5/11
Rev. 0.9
5 Page 
Package Outline
SOP-8L
FP131
UNIT: mm
Symbols
A
A1
A2
D
E
H
L
θ°
Min. (mm)
1.346
0.101
1.092
4.800
3.810
5.791
0.406
0°
Max. (mm)
1.752
0.254
1.498
4.978
3.987
6.197
1.270
8°
Note:
1. Package dimensions are in compliance with JEDEC Outline: MS-012 AA.
2. Dimension “D” does not include molding flash, protrusions or gate burrs.
3. Dimension “E” does not include inter-lead flash, or protrusions.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
11/11
Rev. 0.9
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet FP131.PDF ] | |
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