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Electrical Characteristics
V DD =15 V and T A =25°C, unless otherwise specified.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
V DD Section
V DD-ON
V DD-OFF
Turn-On Threshold Voltage
Turn-Off Threshold Voltage
14.5
6.75
16.0
7.75
17.5
8.75
V
V
I DD-OP
Operating Current
At Maximum Frequency
C L =1 nF
3
4
5
mA
I DD-ST
V OVP
Startup Current
V DD Over-Voltage-Protection Level
V DD =V DD-ON – 0.16 V
22.0
2
23.5
20
25.0
μ A
V
Gate Section
V OL
V OH
I source
I sink
Output Voltage Low
Output Voltage High
Peak Sourcing Current
Peak Sinking Current
V DD =20 V, I GATE =-1 mA
V DD =10 V, I GATE =+1 mA
V DD =10 ~ 20 V
V DD =10 ~ 20 V
5
60
180
1.5
V
V
mA
mA
t r
t f
V CLAMP
Rising Time
Falling Time
Output Clamp Voltage
C L =1 nF
C L =1 nF
100
20
12
150
60
15
200
100
18
ns
ns
V
Oscillator Section
f MAX-CC
f MIN-CC
VS MAX-CC
VS MIN-CC
t ON(MAX)
Maximum Frequency in CC
Minimum Frequency in CC
V S for Maximum Frequency in CC
V S for Minimum Frequency in CC
Maximum Turn-On Time
V DD =10 V, 20 V
V DD =10 V, 20 V
f=f MAX -2 kHz
f=f MIN +2 kHz
60
21.0
2.25
0.55
12
65
23.5
2.35
0.85
14
70
26.0
2.45
1.15
16
kHz
kHz
V
V
μ s
Current-Sense Section
V RV
Reference Voltage
2.475
2.500
2.525
V
V CCR
EAI Voltage for CC Regulation
V CS =0.44 V
2.38
2.43
2.48
V
t LEB
Leading-Edge Blanking Time
300
ns
t MIN
Minimum On Time in CC
V COMI =0 V
600
ns
t PD
t DIS-BNK
I VS-BNK
Propagation Delay to GATE
t DIS Blanking Time of VS
VS Current for VS Blanking
50
100
1.5
100
150
ns
μ s
μ A
Current-Error-Amplifier Section
Gm
Transconductance
85
μ mho
I COMI-SINK
I COMI-SOURCE
COMI Sink Current
COMI Source Current
V EAI =3 V, V COMI =5 V
V EAI =2 V, V COMI =0 V
25
25
38
38
μ A
μ A
V COMI-HGH
V COMI-LOW
COMI High Voltage
COMI Low Voltage
V EAI =2 V
V EAI =3 V
4.9
0.1
V
V
Continued on the following page…
? 2011 Fairchild Semiconductor Corporation
FL7732 ? Rev. 1.0.6
5
www.fairchildsemi.com
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