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| MIC3203 Datasheet, PDF (3/21 Pages) Micrel Semiconductor – High-Brightness LED Driver Controller with High-Side Current Sense | |||
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Micrel, Inc.
MIC3203
Absolute Maximum Ratings (1)
VIN to PGND .................................................. â0.3V to +45V
VCC to PGND ................................................ â0.3V to +6.0V
CS to PGND ........................................ â0.3V to (VIN + 0.3V)
EN to AGND ........................................ â0.3V to (VIN + 0.3V)
DIM to AGND ...................................... â0.3V to (VIN + 0.3V)
DRV to PGND .................................... â0.3V to (VCC + 0.3V)
PGND to AGND .......................................... â0.3V to + 0.3V
Junction Temperature ................................................ 150°C
Storage Temperature Range .................... â60°C to +150°C
Lead Temperature (Soldering, 10sec) ....................... 260°C
ESD Ratings (3)
HBM ...................................................................... 1.5kV
MM .........................................................................200V
Operating Ratings (2)
Supply Voltage (VIN).......................................... 4.5V to 42V
Enable Voltage (VEN) .............................................. 0V to VIN
Dimming Voltage (V ) DIM .................................................................0V to VIN
Junction Temperature (TJ) ........................ â40°C to +125°C
Junction Thermal Resistance
SOIC (θJA) .......................................................98.9°C/W
SOIC (θJC).......................................................48.8°C/W
Electrical Characteristics (4)
VIN = VEN = VDIM = 12V; CVCC = 1.0µF; TJ = 25°C, bold values indicate â40°C ⤠TJ ⤠+125°C; unless noted.
Symbol Parameter
Condition
Min. Typ. Max.
Input Supply
VIN
Input Voltage Range (VIN)
4.5
42
IS
Supply Current
DRV = open
1
3
ISD
Shutdown Current
VEN = 0V
1
UVLO
VIN UVLO Threshold
VIN rinsing
3.2
4
4.5
UVLOHYS VIN UVLO Hysteresis
500
VCC Supply
VCC
VCC Output Voltage
VIN = 12V, ICC = 10mA
4.5
5
5.5
Current Limit
VCS(MAX) Current Sense Upper Threshold
VCS(MAX ) = VIN â VCS
201.4 212 222.6
199
212
225
VCS(MIN) Sense Voltage Threshold Low
VCS(MIN ) = VIN â VCS
168
177
186
165
177
189
VCSHYS
VCS Hysteresis
35
Current Sense Response Time
VCS Rising
50
VCS Falling
70
CS Input Current
VIN â VCS = 220mV
0.5
10
Frequency
FMAX
Switching Frequency
1.5
Dithering (MIC3203)
VDITH
VCS Hysteresis Dithering Range(5)
±6
FDITHER
Frequency Dithering Range(5)
% of Switching Frequency
±12
Units
V
mA
µA
V
mV
V
mV
mV
mV
mV
mV
ns
ns
µA
MHz
mV
%
March 2010
3
M9999-032910-A
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