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PDF FP133 Data sheet ( Hoja de datos )
| Número de pieza | FP133 | |
| Descripción | Over Current Protection IC | |
| Fabricantes | Feeling Technology | |
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FP133
Over Current Protection IC With Shunt Regulator
General Description
FP133 is a main rail 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 primary side PWM IC when over current occurs.
The voltage shunt regulator has a 2.5V reference for switching power supply secondary output
voltage feedback.
FP133 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
Independent Power Supply Voltage: 2.7 to 28V
Wide Operating Temperature Range: -20℃~ +105℃
Independent Shunt and Supply Voltage
Low Input Offset Voltage
Sense Gain Adjustable
Built-in 1.25V Comparator for O.C.P
Shunt Regulator Voltage: 2.5V (1.0%)
Output Sink Current Capability up 50mA
Package: SOP-8L
Typical Application Circuit
SPS
AC Adaptor
Isolated Fly-back DC-DC Converter
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
1/10
Rev. 0.9
1 page  
FP133
Recommended Operating Conditions
Parameter
Symbol
Conditions
Supply Voltage
Vcc
Operating Temperature
Min.
2.7
-20
Typ.
Max.
28
+105
Unit
V
°C
DC Electrical Characteristics
(VCC=5V, TA= -20°C~+105°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
Shutdown Comparator Section
Input Offset Voltage
Common-Mode Voltage (IN-)
Voltage Gain
Large Signal Response Time
VOFFSET2
VCM
AV
-0.3
50
Response Time
Output Sink Current
Saturation Voltage
Output Leakage Current
Reference Voltage (2%)
Line Regulation
ISINK
VSAT
VREF
VCSO>1.3V
VFPO = 1.0V
VCSO>1.3V
IFPO =10mA
VCSO<1.0V
VFPO = 28V
TA=25℃
TA=-25℃~105℃
3V≦VCC ≦28V
1.238
1.225
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
- VCC-1.5
200
300
1.3
16
1
0.1 1
1.25 1.263
1.25 1.275
2 15
Unit
mV
V
dB
µV / °C
µV / V
µA
%
%
GΩ||pF
V
V
kHz
μS
nA
mV
V
V/mV
nS
μS
mA
V
μA
V
V
mV
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
5/10
Rev. 0.9
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet FP133.PDF ] | |
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