?2003 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN7527B " Rev. 1.0.3
6
 
Electrical Characteristics (Continued)
V
CC
= 14 V, -25癈 d T
A
 d 125癈, unless otherwise stated.
Symbol
Parameter
Conditions
Min.     Typ.
Max.     Unit
Zero Current Detect Section
V
TH DET
 
Input Voltage Threshold
V
DET
 Increasing
1.7
2.0
2.3
V
H
Y DET
 
Detect Hysteresis
0.2
0.5
0.8
V
V
CLAMP I
     Input Low Clamp Voltage
I
DET
 = -100 礎
0.45
0.75
1.00
V
V
CLAMP H
     Input High Clamp Voltage
I
DET
 = 3 mA
6.5
7.2
7.9
V
I
b DET
 
Input Bias Current
1 V d V
DET
 d 5 V
-1.0
-0.1
1.0
I
CLAMP(D)
 
Input High/Low Clamp Diode
urrent
(1)
 
 
 
?
mA
Output Section
V
OH
 
utput Voltage High
I
O
 = -10 mA
10.5
11.0
 
V
V
OL
 
utput Voltage Low
I
O
 = 10 mA
 
0.8
1.0
V
t
R
 
Rising Time
(1)
 
C
L
 = 1 nF
 
130
200
ns
t
F
 
Falling Time
(1)
 
C
L
 = 1 nF
 
50
120
ns
V
OMAX O
     Maximum Output Voltage
V
CC
 = 20 V, I
O
 = 100 礎
12
14
16
V
V
OMIN(O)
 
utput Voltage with UVLO
ctivated
V
CC
 = 5 V, I
O
 = 100 礎
 
 
1
V
Restart Timer Section
t
D RST
 
Restart Time Delay
V
M1
 = 1 V, V
M2
 = 3.5 V
 
150
 
Over-Voltage Protection Section
I
SOVP
 
oft OVP Detecting Current
25
30
35
I
DOVP
 
Dynamic OVP Detecting Current
35
40
45
V
OVP
 
tatic OVP Threshold Voltage
V
INV
 = 2.7 V
2.10
2.25
2.40
V
Note:
1.    These parameters, although guaranteed, are not 100% tested in production.
 
Multiplier Gain:
(
)
REF
M
M
V
V
V
Threshold
Pin
-
?/DIV>
=
2
1
_
4
 
where V
M1
 = V
PIN3
, V
M2
 = V
PIN2
 
 
 
 
 
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