MC33232
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (V
CC
= 12 V, for typical values T
A
= 20癈 ~ +85癈, unless otherwise noted)
Characteristic
Unit
Max
Typ
Min
Symbol
MULTIPLIER
Input Threshold
(Pin 2)
V
thm
1.05 V
OL
(ea)
1.2 V
OL
(ea)
V
Dynamic Input Voltage Range
V
Multiplier Input
(Pin 3)
Vpin 3
0 to 2.5
0 to 3.5
Compensation
(Pin 2)
Vpin 2
V
thm
to
V
thm
+ 1.0
V
thm
to
V
thm
+ 1.5
Input Bias Current, Pin 3 (V
FB
= 0 V)
I
IB(mult)
0.1
0.5
mA
Multiplier Gain
(Vpin 3 = 0.5 V, Vpin 2 = V
FB
+ 1.0 V)
K
0.43
0.65
0.87
1/V
ZERO CURRENT DETECTOR
Input Threshold Voltage (V
in
Increasing)
V
th(ZCD)
1.33
1.6
1.87
V
Hysteresis (V
in
Decreasing)
V
H(ZCD)
100
200
300
mV
Input Clamp Voltage
High State (I
DET
= +3.0 mA)
V
IH
5.0
5.3
V
Low State (I
DET
= 3.0 mA)
V
IL
0.3
0.7
1.0
Propagation Delay Time Zero Current Detect to Drive Out
nsec
R
ZCD
= 4.7 kW
TZO
100
200
ONE SHOT TRIGGER
Output Minimum Off Time
T
OS
500
850
nsec
CURRENT SENSE COMPARATOR
Input Bias Current
(Vpin 4 = 0 V)
I
IB(cs)
0.15
1.0
mA
Input Offset Voltage
(Vpin 2 = 1.1 V, Vpin 3 = 0 V)
V
io(cs)
9.0
25
mV
Maximum Current Sense Input Threshold
V
thmax
1.3
1.5
1.8
V
Delay to Output
t
PHL(in/out)
100
200
nsec
DRIVE OUTPUT
Output Voltage (V
CC
= 12 V)
V
Low State
(I
sink
= 20 mA)
V
OL
0.3
0.8
(I
sink
= 200 mA)
2.4
3.3
High State
(I
source
= 20 mA)
V
OH
9.8
10.3
V
(I
source
= 200 mA)
7.8
8.4
Output Voltage (V
CC
= 25 V, I
source
= 20 mA, C
L
= 15 pF)
V
O
14
16
18
V
Output Voltage Rise Time (C
L
= 1.0 nF)
t
r
50
120
nsec
Output Voltage Fall Time (C
L
= 1.0 nF)
t
f
50
120
nsec
Output Voltage with UVLO Active (V
CC
= 7.0 V, I
sink
= 1.0 mA)
V
O(UVLO)
0.1
0.5
V
RESTART TIMER
Restart Time Delay
tDLY
200
900
msec
Restart Time at Startup
POR
0
25
msec
UNDER VOLTAGE LOCKOUT (Metal Option Version)
Startup Threshold (V
CC
Increasing)
V
th(on)
14.4
16
17.6
V
Minimum Operating Voltage After Turnoff (V
CC
Decreasing)
V
shut
9.0
10
11
V
Hysteresis
V
H
3.5
6.0
8.6
V
TOTAL DEVICE
Power Supply Current Startup (V
CC
= 7.0 V)
I
CC
0.05
0.1
mA
Operating
6.5
12
Dynamic Operating (50 KHz, C
L
= 1.0 nF)
9.0
20
Power Supply Zener Voltage (I
CC
= 25 mA)
VZ
26
28
V
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