FAN501A Datasheet, PDF (6/16 Pages) Fairchild Semiconductor – Offline DCM / CCM Flyback PWM Controller for Charger Applications

Electrical Characteristics
VDD=15 V and TJ=-40~125C unless noted.
Symbol
Parameter
Conditions
Voltage-Sense Section
ITC
Temperature-Independent Bias Current VCS=5 V, VFB=3 V
IVS-H
VS Source Current Threshold to fOSC-L Operation
IVS-L
VS Source Current Threshold to fOSC-H Operation
IVS-Brownout
VVS-OVP
NVS-OVP
VS Source Current Threshold to Enable Brownout
Output Over-Voltage Protection with VS Sampling Voltage⁽⁴⁾
Output Over-Voltage Protection Debounce Cycle Counts⁽⁴⁾
Current-Sense Section
VVR
Internal Reference Voltage for CC Regulation
VCCR
Variation Test Voltage on CS Pin for
CC Regulation⁽⁴⁾
VCS=0.375 V, VCOMP= 1.59 V,
VS= 6 V
KCCM Design Parameter in CC Regulation
VCS-LIM Current Limit Threshold Voltage
tPD
GATE Output Turn-Off Delay
tLEB
Leading-Edge Blanking Time
VSlope Slope Compensation
Maximum Duty Cycle
Constant Current Correction
ICOMP-H
COMP Pin Source Current as VS=0.3 V
VCS=0.3 V, VFB=2.5 V,
VS=0.3 V
GATE Section
tON-MIN Minimum On Time
tON-MIN-Limit Limited Minimum On Time
DCYMAX Maximum Duty Cycle
VGATE-L Gate Output Voltage Low
VDD-PMOS-ON Internal Gate PMOS Driver ON
VDD-PMOS-OFF Internal Gate PMOS Driver OFF
tr
Rising Time
tf
Falling Time
VGATE-CLAMP Gate Output Clamping Voltage
Notes:
4. TJ guaranteed range at 25C.
VCS=0.6 V, VS=0.3 V,
VFB=1.7 V
VCS=0.6 V, VS=0.5 V,
VFB=1.7 V
VCS=0.6 V, VS=0 V, VFB=4 V
VCS=0 V, VS=0 V, CGATE=1 nF
VCS=0 V, VS=0 V, CGATE=1 nF
VDD=25 V
Min. Typ. Max. Unit
8.75 10.00 11.25 μA
750
μA
680
μA
160
μA
3.10 3.20 3.30 V
8
Cycle
2.460 2.500 2.540 V
2.405 2.430 2.455 V
12.0
V/V
0.80 0.85 0.90 V
100 200 ns
150 200 ns
66.6
mV/μs
25 35 45 μA
450 550 650 ns
0.95 1.20 1.45 μs
60.0 68.5 77.0 %
0
1.5 V
7.0 7.5 8.0 V
9.0 9.5 10.0 V
100 140 180 ns
30 50 70 ns
7.0 7.5 8.0 V
© 2014 Fairchild Semiconductor Corporation
FAN501A • Rev. 1.0.0
6
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