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PDF FAN7527B Data sheet ( Hoja de datos )
| Número de pieza | FAN7527B | |
| Descripción | Power Factor Correction Controller | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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FAN7527B
Power Factor Correction Controller
www.fairchildsemi.com
Features
• Internal Start-up Timer
• Internal R/C Filter Eliminates the Need for an External
R/C Filter
• Very Precise Adjustable Output Over Voltage Protection
• Zero Current Detector
• One Quadrant Multiplier
• Trimmed 1.5% Internal Band Gap Reference
• Under Voltage Lockout with 3V of Hysteresis
• Totem Pole Output With High State Clamp
• Low Start-up and Operating Current
• 8-Pin DIP or 8-Pin SOP
Applications
• Electronic Ballast
• SMPS
Description
The FAN7527B provides simple and high performance
active power factor correction. The FAN7527B is optimized
for electronic ballasts and low power and high density power
supplies which require minimum board size, reduced
external components and low power dissipation. Because the
R/C filter is included in the current sense block, the external
R/C filter is not necessary. Special circuitry has also been
added to prevent no load runaway conditions. Regardless of
the supply voltage, the output drive clamping circuit limits
the overshoot of the power MOSFET gate drive. It greatly
enhances the system reliability.
8-DIP
1
8-SOP
1
©2002 Fairchild Semiconductor Corporation
Rev 1.0.1
1 page  
Electrical Characteristics
VCC= 14V, -25°C ≤ Ta ≤ 125°C, unless otherwise stated.
Characteristics
Symbol
Test Condition
< UNDER VOLTAGE LOCKOUT SECTION>
Start Threshold Voltage
Vth(st) Vcc Increasing
UVLO Hysteresis
HY(st)
-
< SUPPLY CURRENT SECTION >
Start-up Supply Current
Ist Vcc = Vth(st) -0.2V
Operating Supply Current
Icc Output not switching
Operating Current at OVP
Icc(ovp) Vinv = 3V
Dynamic Operating Supply Current
Idcc 50kHz, CI = 1nF
< ERROR AMPLIFIER SECTION >
Voltage Feedback Input Threshold
Iref = 0mA, Ta = 25°C
Vref -25 ≤ Ta ≤ 125°C
Line Regulation
Temperature Stability of Vref (Note1)
∆Vref1
∆Vref3
14V ≤ Vcc ≤ 25V
-25 ≤ Ta ≤ 125°C
Input Bias Current
Ib(ea)
-
Output Source Current
Isource Vm2 = 4V
Output Sink Current
Isink Vm2 = 4V
Output Upper Clamp Voltage (Note2) Veao(H) Isource = 0.1mA
Output Lower Clamp Voltage (Note3) Veao(L) Isink = 0.1mA
Large Signal Open Loop Gain (Note4) Gv
-
Power Supply Rejection Ratio (Note5) PSRR 14V ≤ Vcc ≤ 25V
Unity Gain Bandwidth (Note6)
GBW
-
Slew Rate (Note7)
SR -
< MULTIPLIER SECTION>
Input Bias Current (Pin3)
Ib(m)
-
M1 Input Voltage Range (Pin3)
∆Vm1
-
M2 Input Voltage Range (Pin2)
∆Vm2
-
Multiplier Gain (Note8)
K Vm1 = 1V, Vm2 = 3.5V
Maximum Multiplier Output Voltage Vomax(m) Vinv =0V, Vm1 = 4V
Temperature Stability of K (Note9)
∆K/∆T -25 ≤ Ta ≤ 125°C
FAN7527B
Min. Typ. Max. Unit
10.5 11.5
23
12.5
4
V
V
10 60 100 uA
-3
6 mA
- 1.7 4 mA
-4
8 mA
2.465
2.44
-
-
-0.5
-2
2
-
-
60
60
-
-
2.5
2.5
0.1
20
-
-4
4
6
2.25
80
80
1
0.6
2.535
2.56
10
-
0.5
-
-
-
-
-
-
-
-
V
V
mV
mV
uA
mA
mA
V
V
dB
dB
MHz
V/us
-0.5 - 0.5 uA
0 - 3.8 V
Vref - Vref+2.5 V
0.36 0.44 0.52 1/V
1.65 1.8 1.95
V
- -0.2 - %/°C
5
5 Page 
Mechanical Dimensions (Continued)
Package
FAN7527B
Dimensions in millimeters
8-SOP
1.55 ±0.20
0.061 ±0.008
MIN
0.1~0.25
0.004~0.001
#1 #8
#4 #5
6.00 ±0.30
0.236 ±0.012
3.95 ±0.20
0.156 ±0.008
1.80
0.071
MAX
0.50 ±0.20
0.020 ±0.008
5.72
0.225
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet FAN7527B.PDF ] | |
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