MC34262, MC33262
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (continued) (V
CC
= 12 V (Note 6), for typical values T
A
= 25癈, for min/max values T
A
is the
operating ambient temperature range that applies (Note 7), unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
MULTIPLIER
Dynamic Input Voltage Range
Multiplier Input (Pin 3)
Compensation (Pin 2)
V
Pin
3
V
Pin
2
0 to 2.5
V
th(M)
to
(V
th(M)
+ 1.0)
0 to 3.5
V
th(M)
to
(V
th(M)
+ 1.5)
V
Multiplier Gain (V
Pin
3
= 0.5 V, V
Pin
2
= V
th(M)
+ 1.0 V) (Note 8)
K
0.43
0.65
0.87
1/V
ZERO CURRENT DETECTOR
Input Threshold Voltage (V
in
Increasing)
V
th
1.33
1.6
1.87
V
Hysteresis (V
in
Decreasing)
V
H
100
200
300
mV
Input Clamp Voltage
High State (I
DET
= + 3.0 mA)
Low State (I
DET
= 3.0 mA)
V
IH
V
IL
6.1
0.3
6.7
0.7
1.0
V
CURRENT SENSE COMPARATOR
Input Bias Current (V
Pin
4
= 0 V)
I
IB
0.15
1.0
mA
Input Offset Voltage (V
Pin
2
= 1.1 V, V
Pin
3
= 0 V)
V
IO
9.0
25
mV
Maximum Current Sense Input Threshold (Note 9)
V
th(max)
1.3
1.5
1.8
V
Delay to Output
t
PHL(in/out)
200
400
ns
DRIVE OUTPUT
Output Voltage (V
CC
= 12 V)
Low State (I
Sink
= 20 mA)
Low State (I
Sink
= 200 mA)
High State (I
Source
= 20 mA)
High State (I
Source
= 200 mA)
V
OL
V
OH
9.8
7.8
0.3
2.4
10.3
8.4
0.8
3.3
V
Output Voltage (V
CC
= 30 V)
High State (I
Source
= 20 mA, C
L
= 15 pF)
V
O(max)
14
16
18
V
Output Voltage Rise Time (C
L
= 1.0 nF)
t
r
50
120
ns
Output Voltage Fall Time (C
L
= 1.0 nF)
t
f
50
120
ns
Output Voltage with UVLO Activated
(V
CC
= 7.0 V, I
Sink
= 1.0 mA)
V
O(UVLO)
0.1
0.5
V
RESTART TIMER
Restart Time Delay
t
DLY
200
620
ms
UNDERVOLTAGE LOCKOUT
Startup Threshold (V
CC
Increasing)
V
th(on)
11.5
13
14.5
V
Minimum Operating Voltage After TurnOn (V
CC
Decreasing)
V
Shutdown
7.0
8.0
9.0
V
Hysteresis
V
H
3.8
5.0
6.2
V
TOTAL DEVICE
Power Supply Current
Startup (V
CC
= 7.0 V)
Operating
Dynamic Operating (50 kHz, C
L
= 1.0 nF)
I
CC
0.25
6.5
9.0
0.4
12
20
mA
Power Supply Zener Voltage (I
CC
= 25 mA)
V
Z
30
36
V
5. Maximum package power dissipation limits must be observed.
6. Adjust V
CC
above the startup threshold before setting to 12 V.
7. T
low
= 0癈 for MC34262
T
high
= +85癈 for MC34262
= 40癈 for MC33262
= +105癈 for MC33262.
8. K +
Pin 4 Threshold
V
Pin 3
(V
Pin2
* V
th(M)
)
9. This parameter is measured with V
FB
= 0 V, and V
Pin
3
= 3.0 V.
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