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Micrel, Inc.
Absolute Maximum Ratings (1)
V IN to PGND .................................................. ? 0.3V to + 45V
V CC to PGND ................................................ ? 0.3V to + 6.0V
CS to PGND ........................................ ? 0.3V to (V IN + 0.3V)
EN to AGND ........................................ ? 0.3V to (V IN + 0.3V)
DIM to AGND ...................................... ? 0.3V to (V IN + 0.3V)
DRV to PGND .................................... ? 0.3V to (V CC + 0.3V)
PGND to AGND .......................................... ? 0.3V to + 0.3V
Junction Temperature ................................................ 150 ° C
Storage Temperature Range .................... ? 60°C to + 150 ° C
Lead Temperature (Soldering, 10sec) ....................... 260 ° C
ESD Ratings (3)
MIC3203
Operating Ratings (2)
Supply Voltage (V IN ).......................................... 4.5V to 42V
Enable Voltage (V EN) .............................................. 0V to V IN
Dimming Voltage (V DIM ) ................................................................. 0V to V IN
Junction Temperature (T J ) ........................ ? 40 ° C to + 125 ° C
Junction Thermal Resistance
SOIC ( θ JA ) .......................................................98.9 ° C/W
SOIC ( θ JC ).......................................................48.8 ° C/W
HBM ...................................................................... 1.5kV
MM .........................................................................200V
Electrical Characteristics (4)
V IN = V EN = V DIM = 12V; C VCC = 1.0μF; T J = 25 ° C, bold values indicate ? 40 ° C ≤ T J ≤ + 125 ° C; unless noted.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Units
Input Supply
V IN
Input Voltage Range (V IN )
4.5
42
V
I S
I SD
Supply Current
Shutdown Current
DRV = open
V EN = 0V
1
3
1
mA
μA
UVLO
V IN UVLO Threshold
V IN rinsing
3.2
4
4.5
V
UVLO HYS
V IN UVLO Hysteresis
500
mV
VCC Supply
VCC
V CC Output Voltage
V IN = 12V, I CC = 10mA
4.5
5
5.5
V
Current Limit
V CS(MAX)
V CS(MIN)
Current Sense Upper Threshold
Sense Voltage Threshold Low
V CS(MAX ) = V IN ? V CS
V CS(MIN ) = V IN ? V CS
201.4
199
168
165
212
212
177
177
222.6
225
186
189
mV
mV
mV
mV
V CSHYS
V CS Hysteresis
35
mV
Current Sense Response Time
V CS Rising
V CS Falling
50
70
ns
ns
CS Input Current
V IN ? V CS = 220mV
0.5
10
μA
Frequency
F MAX
Switching Frequency
1.5
MHz
Dithering (MIC3203)
V DITH
V CS Hysteresis Dithering Range (5)
±6
mV
F DITHER
Frequency Dithering Range
(5)
% of Switching Frequency
±12
%
March 2010
3
M9999-032910-A
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