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Micrel, Inc.
Absolute Maximum Ratings (1, 2)
V IN to PGND .................................................. ? 0.3V to + 42V
V LX to PGND........................................ ? 0.3V to (V IN + 0.6V)
V CS to PGND ....................................... ? 0.3V to (V IN + 0.3V)
V EN to AGND ....................................... ? 0.3V to (V IN + 0.3V)
V DIM to AGND ...................................... ? 0.3V to (V IN + 0.3V)
V CC to PGND ................................................ ? 0.3V to + 6.0V
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
MIC3202
Operating Ratings (3)
Supply Voltage (V IN ).......................................... 6.0V to 37V
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 ) ..........................................................41 ° C/W
SOIC ( θ JC ).......................................................14.7 ° C/W
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 )
6.0
37.0
V
I S
I SD
Supply Current
Shut Down Current
LX Pin = open
V EN = 0V; T J = from -40oC to 85oC
1.2
0.05
1.75
5
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 CS = V IN = 12V, I CC = 10mA
4.5
5
5.5
V
Current Limit
V CS(MAX)
V CS(MIN)
Current-Sense Upper Threshold
Current-Sense Lower Threshold
V CS(MAX ) = V IN ? V CS
V CS(MIN ) = V IN ? V CS
199
165
212
177
225
189
mV
mV
V CS Hysteresis
35
mV
V CSHYS
Current-Sense Response Time
Current-Sense Input Current
V CS Rising
V CS Falling
V IN - V CS = 200mV
60
40
3
ns
μA
Frequency
F MAX
Maximum Switching Frequency
1
MHz
Dithering (MIC3202)
V DITH
V CS Hysteresis Dithering Range (5)
±6
mV
F DITHER
Frequency Dithering Range
(5)
% of Switching Frequency
±12
%
Enable Input
EN HI
EN Logic Level High
EN Logic Level Low
2.0
0.4
V
V
EN LO
EN Bias Current
Start-up Time
V EN = 12V
V EN = 0V
From EN Pin going high to LX
going low
30
0.1
30
60
1
μA
μs
September 2010
3
M9999-091710-A
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