MC33260
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (V
CC
= 13 V, T
J
= 25癈 for typical values, T
J
= - -40 to 105癈 for min/max values
unless otherwise noted.)
Characteristic
Pin #
PDIP- -8
Pin #
SO- -8
Symbol
Min
Typ
Max
Unit
REGULATION SECTION (continued)
Feedback Pin Clamp Voltage @ I
FB
= 100 mA
1
7
V
FB- -100
1.5
2.1
2.5
V
Feedback Pin Clamp Voltage @ I
FB
= 200 mA
1
7
V
FB- -200
2.0
2.6
3.0
V
CURRENT SENSE SECTION
Zero Current Detection Comparator Threshold
4
2
V
ZCD- -th
- -90
- -60
- -30
mV
Negative Clamp Level (I
CS- -pin
= - -1.0 mA)
4
2
Cl- -neg
- -
- -0.7
- -
V
Bias Current @ Vcs = V
ZCD- -th
4
2
I
b- -cs
- -0.2
- -
- -
mA
Propagation Delay (Vcs > V
ZCD- -th
) to Gate Drive High
7
5
T
ZCD
- -
500
- -
ns
Current Sense Pin Internal Current Source
4
2
I
OCP
192
205
218
mA
Leading Edge Blanking Duration
t
LEB
- -
400
- -
ns
OverCurrent Protection Propagation Delay
(Vcs < V
ZCD- -th
to Gate Drive Low)
7
5
T
OCP
100
160
240
ns
SYNCHRONIZATION SECTION
Synchronization Threshold
PDIP- -8
SO- -8
5
- -
- -
3
V
sync- -th
V
sync- -th
0.8
0.8
1.0
1.0
1.2
1.4
V
V
Negative Clamp Level (I
sync
= - -1.0 mA)
5
3
Cl- -neg
- -
- -0.7
- -
V
Minimum Off- -Time
7
5
T
off
1.5
2.1
2.7
ms
Minimum Required Synchronization Pulse Duration
5
3
T
sync
- -
- -
0.5
ms
OVERVOLTAGE PROTECTION SECTION
OverVoltage Protection High Current Threshold
and I
regH
Difference
1
7
I
OVPH
- -I
regH
8.0
13
18
mA
OverVoltage Protection Low Current Threshold
and I
regH
Difference
1
7
I
OVPL
- -I
regH
0
- -
- -
- -
Ratio (I
OVPH
/I
OVPL
)
1
7
I
OVPH
/I
OVPL
1.02
- -
- -
- -
Propagation Delay (I
FB
> 110% I
ref
to Gate Drive Low)
7
5
T
OVP
- -
500
- -
ns
UNDERVOLTAGE PROTECTION SECTION
Ratio (UnderVoltage Protection Current
Threshold)/I
regH
1
7
I
UVP
/I
regH
12
14
16
%
Propagation Delay (I
FB
< 12% I
ref
to Gate Drive Low)
7
5
T
UVP
- -
500
- -
ns
THERMAL SHUTDOWN SECTION
Thermal Shutdown Threshold
7
5
T
stdwn
150
- -
癈
Hysteresis
7
5
擳
stdwn
- -
30
- -
癈
V
CC
UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold
8
6
V
stup- -th
9.7
11
12.3
V
Disable Voltage After Threshold Turn- -On
8
6
V
disable
7.4
8.5
9.6
V
TOTAL DEVICE
Power Supply Current
Startup (V
CC
= 5 V with V
CC
Increasing)
Operating @ I
FB
= 200 mA
8
6
I
CC
- -
- -
0.1
4.0
0.25
8.0
mA
NOTE: Vcs is the Current Sense Pin Voltage and I
FB
is the Feedback Pin Current.
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