SM8205 Datasheet, PDF (4/13 Pages) M.S. Kennedy Corporation – High-Power LED Driver with Integrated PWM Dimming MOSFET Driver

SM8205
ELECTRICAL CHARACTERISTICS ^(continued)
The typically testing values are at VIN=12V, TA=25℃,Unless otherwise noted.
Symbol Parameter
Min Typ Max
PWM Dimming
VPWMD(Lo) PWM input Low voltage
VPWMD(Hi) PWM input High voltage
RPWMD PWM pin pull-down resistance
Over Voltage Protection
-
-
0.8
2.0
-
-
90 100 130
VOVP
Over-voltage threshold
TPD
Propagation delay time
Oscillator
Fosc
Switching frequency
DMAX
Maximum duty cycle
Error Amplifier ^(Note1)
1.15 1.20 1.25
-
150
-
90 100 110
270 300 330
-
92
-
GB
Gain bandwidth product
-
2.5
-
AV
Open loop gain
VO
Output voltage range
gm
Transconductance
Gate Driver
IG-SOURCE
IG-SINK
TG-RISE
TG-FALL
IF-SOURCE
IF-SINK
TF-RISE
TF-FALL
Gate short-circuit current
Gate sinking current
Gate driver output rise time
Gate driver output fall time
Fault pin short-circuit current
Fault sinking current
Fault driver output rise time
Fault driver output fall time
Slope Compensation
VSC (PEAK)
ISLOPE
GSLOPE
SC pin peak voltage
Current source out of SC pin
Internal current mirror ratio
Output Short-Circuit
73
-
-
0.3
-
4.95
-
630
-
60
-
-
310
-
-
-
35
50
-
20
35
45
-
-
60
-
-
-
165
-
-
145
-
-
1.5
-
0
-
100
1.8
2
2.2
TOFF(S.C) Propagation time for short-circuit detection
GIREF
Amplifier gain at IREF pin
Current Sense
TBLANK Leading edge blanking
TDELAY Delay to output of PWM comparator
Thermal Protection
TSD
Thermal shutdown temperature
THYS
Thermal shutdown hysteresis
Note1: Guaranteed by design
-
-
200
1.7
2
2.1
-
100
-
-
150
-
-
140
-
-
40
-
Units Conditions
V
V
KΩ
V OVP rising
ns OVP=0-2V step
KHz RT=910KΩ
KHz RT=300KΩ
%
MHz
dB
V
uA/V
75pF capacitance at
COMP pin
Output open
VCC=5.0V
mA VGATE=0V, VDD=10V
mA VGATE=10V, VDD=10V
ns CL=1000pF, VDD=10V
ns CL=1000pF, VDD=10V
mA VFAULT=0V, VDD=10V
mA VFAULT=10V, VDD=10V
ns CL=1000pF, VDD=10V
ns CL=1000pF, VDD=10V
V RT=910KΩ, RSLOPE=30KΩ
uA
- RCS=1KΩ, RSLOPE=30KΩ
IREF=400mV, FDBK=0-1V,
ns Fault goes from high to
low
- IREF=400mV
ns
ns
COMP=CLIM=VCC,
VCS=0-600mV Step
℃
℃
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4
Rev. 2.0 @ 2011/10