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Electrical Characteristics
Typical values are at T A = +25°C. Specifications to -40°C ~ 125°C are guaranteed by design based on final
characterization results.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
V CC Bias Section
V CC
V CCST+
V CCST-
VCC Regulator Output Voltage
UVLO Positive Going Threshold
UVLO Negative Going Threshold
V HV =100 V DC
V CC Increasing
V CC Decreasing
14.0
12
7
15.5
13
8
17.0
14
9
V
V
V
V CCHY
I HV
I ST
UVLO Hysteresis
HV Pin Current
Startup Current
V HV =100 V DC ,
C L =150 pF, RT=Open
4
5
0.85
120
6
1.10
150
V
mA
μ A
Switching Section
R T =5.95 k Ω
200
250
300
kHz
f OSC
Operating Frequency
R T =87 k Ω
R T Open
16
40.5
20
45.0
24
49.5
kHz
kHz
t MIN
D MAX
Minimum On Time
Maximum Duty Cycle
400
50
ns
%
t LEB
V RT
Leading Edge Blanking Time
Voltage Reference of RT pin
(3)
350
1.5
ns
V
Soft-Start Section
t ss
Soft-Start Time
(3)
DC Mode
AC Mode
48
60
7
72
ms
Periods
Reference Section
AC Mode
V CS1
V CS2
Internal Reference Voltage of CS Pin
DC Mode
(3)
0.354
0.485
0.365
0.500
0.376
0.515
V
Protection Section
OVP VCC
V AOCP
t AOCP
Over-Voltage Protection on VCC Pin
(3)
Abnormal OCP Level at CS Pin
(3)
Abnormal Detection Time
17.7
18.7
2.5
70
19.7
V
V
ns
Hysteresis
t TSDH
t TSDHY
Thermal Shutdown Threshold
Thermal Shutdown Threshold
(3)
(3)
140
150
50
°C
°C
Dimming Section
Threshold
Threshold
V ADIM(ST+)
V ADIM(ST-)
I AD
Analog Dimming Positive Going
(3)
Analog Dimming Negative Going
(3)
Internal Current Source for ADIM Pin
3.15
9
3.50
0.50
12
3.85
0.75
15
V
V
μ A
Note:
3.
These parameters, although guaranteed, are not 100% tested in production.
? 2011 Fairchild Semiconductor Corporation
FL7701 ? Rev. 1.0.4
5
www.fairchildsemi.com
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