MC33260
ELECTRICAL CHARACTERISTICS (VCC = 13 V, TJ = 25°C for typical values, TJ = −40 to 105°C for min/max values
unless otherwise noted.)
Characteristic
Pin # Pin #
PDIP−8 SO−8 Symbol
Min
Typ
Max
REGULATION SECTION (continued)
Feedback Pin Clamp Voltage @ IFB = 100 mA
Feedback Pin Clamp Voltage @ IFB = 200 mA
1
7
VFB−100
1.5
2.1
2.5
1
7
VFB−200
2.0
2.6
3.0
CURRENT SENSE SECTION
Zero Current Detection Comparator Threshold
4
2
VZCD−th
−90
−60
−30
Negative Clamp Level (ICS−pin = −1.0 mA)
4
2
Cl−neg
−
−0.7
−
Bias Current @ Vcs = VZCD−th
4
2
Ib−cs
−0.2
−
−
Propagation Delay (Vcs > VZCD−th) to Gate Drive High
7
5
TZCD
−
500
−
Current Sense Pin Internal Current Source
4
2
IOCP
192
205
218
Leading Edge Blanking Duration
τLEB
−
400
−
OverCurrent Protection Propagation Delay
(Vcs < VZCD−th to Gate Drive Low)
7
5
TOCP
100
160
240
SYNCHRONIZATION SECTION
Synchronization Threshold
PDIP−8
SO−8
5
−
Vsync−th
0.8
1.0
1.2
−
3
Vsync−th
0.8
1.0
1.4
Negative Clamp Level (Isync = −1.0 mA)
Minimum Off−Time
Minimum Required Synchronization Pulse Duration
5
3
Cl−neg
−
−0.7
−
7
5
5
3
Toff
Tsync
1.5
2.1
2.7
−
−
0.5
OVERVOLTAGE PROTECTION SECTION
OverVoltage Protection High Current Threshold
and IregH Difference
1
7
IOVPH−IregH
8.0
13
18
OverVoltage Protection Low Current Threshold
and IregH Difference
1
7
IOVPL−IregH
0
−
−
Ratio (IOVPH/IOVPL)
1
7
IOVPH / IOVPL 1.02
−
−
Propagation Delay (IFB > 110% Iref to Gate Drive Low)
7
5
TOVP
−
500
−
UNDERVOLTAGE PROTECTION SECTION
Ratio (UnderVoltage Protection Current
Threshold) / IregH
1
7
IUVP/IregH
12
14
16
Propagation Delay (IFB < 12% Iref to Gate Drive Low)
7
5
TUVP
−
500
−
THERMAL SHUTDOWN SECTION
Thermal Shutdown Threshold
Hysteresis
7
5
Tstdwn
7
5
DTstdwn
VCC UNDERVOLTAGE LOCKOUT SECTION
Startup Threshold
Disable Voltage After Threshold Turn−On
8
6
Vstup−th
8
6
Vdisable
TOTAL DEVICE
Power Supply Current
Startup (VCC = 5 V with VCC Increasing)
Operating @ IFB = 200 mA
8
6
ICC
NOTE: Vcs is the Current Sense Pin Voltage and IFB is the Feedback Pin Current.
—
150
−
−
30
−
9.7
11
12.3
7.4
8.5
9.6
−
0.1
0.25
−
4.0
8.0
Unit
V
V
mV
V
mA
ns
mA
ns
ns
V
V
V
ms
ms
mA
−
−
ns
%
ns
°C
°C
V
V
mA
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