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MIC3203 Datasheet(PDF) 3 Page - Micrel Semiconductor |
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MIC3203 Datasheet(HTML) 3 Page - Micrel Semiconductor |
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3 / 21 page  Micrel, Inc. MIC3203 March 2010 3 M9999-032910-A Absolute Maximum Ratings (1) VIN to PGND .................................................. −0.3V to +45V VCC to PGND ................................................ −0.3V to +6.0V CS to PGND........................................ −0.3V to (VIN + 0.3V) EN to AGND........................................ −0.3V to (VIN + 0.3V) DIM to AGND ...................................... −0.3V to (VIN + 0.3V) DRV to PGND .................................... −0.3V to (VCC + 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) HBM...................................................................... 1.5kV MM.........................................................................200V Operating Ratings (2) Supply Voltage (VIN).......................................... 4.5V to 42V Enable Voltage (VEN) .............................................. 0V to VIN Dimming Voltage (VDIM).................................................................0V to VIN Junction Temperature (TJ) ........................ −40°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 −40°C ≤ TJ ≤ +125°C; unless noted. Symbol Parameter Condition Min. Typ. Max. Units Input Supply VIN Input Voltage Range (VIN) 4.5 42 V IS Supply Current DRV = open 1 3 mA ISD Shutdown Current VEN = 0V 1 µA UVLO VIN UVLO Threshold VIN rinsing 3.2 4 4.5 V UVLOHYS VIN UVLO Hysteresis 500 mV VCC Supply VCC VCC Output Voltage VIN = 12V, ICC = 10mA 4.5 5 5.5 V Current Limit 201.4 212 222.6 mV VCS(MAX) Current Sense Upper Threshold VCS(MAX ) = VIN − VCS 199 212 225 mV 168 177 186 mV VCS(MIN) Sense Voltage Threshold Low VCS(MIN ) = VIN − VCS 165 177 189 mV VCSHYS VCS Hysteresis 35 mV VCS Rising 50 ns Current Sense Response Time VCS Falling 70 ns CS Input Current VIN − VCS = 220mV 0.5 10 µA Frequency FMAX Switching Frequency 1.5 MHz Dithering (MIC3203) VDITH VCS Hysteresis Dithering Range (5) ±6 mV FDITHER Frequency Dithering Range (5) % of Switching Frequency ±12 % |
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