FAN5182 데이터 시트보기 (PDF) - Fairchild Semiconductor
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FAN5182 Datasheet PDF : 19 Pages
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Electrical Characteristics (Continued)
VCC = 12V, FBRTN = GND, • indicates specifications over operating ambient temperature range.(2)
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Current-Limit Comparator
VILIMIT(NM) Output Voltage: Normal Mode
VILIMIT(SD) Output Voltage: In Shutdown
IILIMIT(NM) Output Current: Normal Mode
Maximum Output Current
VCL Current Limit Threshold
Current Limit Setting Ratio
VDELAY(NM) Delay Normal Mode Voltage
VDELAY(OC) Delay Over-Current Threshold
tDELAY Latch-Off Delay Time(3)
Soft-Start
IDELAY(SS) Output Current, Soft-Start Mode
tDELAY(SS) Soft-Start Delay Time(3)
Enable Input
VIL(EN) Input Low Voltage
VIH(EN)
Input High Voltage
Input Hysteresis Voltage
IIN(EN) Input Current
Power-Good Comparator
VPWRGD(UV) Under-Voltage Threshold
VPWRGD(OV) Over-Voltage Threshold
VOL(PWRGD) Output Low Voltage
Power-Good Delay Time
VCROWBAR Crowbar Trip Point
Crowbar Reset Point
tCROWBAR Crowbar Delay Point(3)
PWM Outputs
VOL(PWM) Output Low Voltage
VOH(PWM) Output High Voltage
Supply
DC Supply Current
VUVLO
UVLO Threshold Voltage
UVLO Hysteresis
EN > 2.0V, RILIMIT = 250kΩ
•
EN < 0.8V, IILIMIT = -100µA
•
EN > 2.0V, RILIMIT = 250kΩ
•
VCSREF - VCSCOMP , RILIMIT = 250kΩ
VCL/IILIMIT
RDELAY = 250kΩ
RDELAY = 250kΩ
RDELAY = 250kΩ, CDELAY = 12nF
During Start-up Delay < 2.4V
•
RDELAY = 250kΩ, CDELAY = 12nF
•
•
•
Relative to FBRTN
•
Relative to FBRTN
•
IPWRGD(SINK) = 4mA
•
Relative to FBRTN
•
Relative to FBRTN
•
Over-voltage to PWM Going Low
IPWM(SINK) = 400µA
•
IPWM(SOURCE) = -400µA
•
•
VCC rising
•
•
2.9 3.0 3.1 V
400 mV
12
µA
60
µA
105 125 145 mV
10.4
mV/µA
2.9 3.0 3.1 V
1.7 1.8 1.9 V
1.5
ms
15 20 25 µA
500
µs
0.8 V
2.0
V
100
mV
-1
+1 µA
600 660 720 mV
880 940 1000 mV
225 400 mV
200
ns
0.970 1.050 1.105 V
550 650 750 mV
400
ns
160 500 mV
4.0
5
V
5 10 mA
6.5 6.9 7.3 V
0.7 0.9 1.1 V
Notes:
2. Limits at operating temperature extremes are guaranteed by design, characterization, and statistical quality control.
3. Guaranteed by design, not tested in production.
© 2005 Fairchild Semiconductor Corporation
FAN5182 • Rev. 1.1.3
6
www.fairchildsemi.com
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