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GRM188R61E105KA12D Datasheet(PDF) 6 Page - International Rectifier |
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GRM188R61E105KA12D Datasheet(HTML) 6 Page - International Rectifier |
6 / 45 page - 6 -` JANUARY 18, 2013 | DATA SHEET | Rev 3.4 6 IR3894 12A Highly Integrated SupIRBuck Single‐Input Voltage, Synchronous Buck Regulator PD‐97745 ELECTRICAL SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS FOR RELIABLE OPERATION WITH MARGIN SYMBOL MIN MAX UNITS Input Voltage Range* PVIN 1.0 21 V Input Voltage Range** VIN 5 21 Supply Voltage Range*** VCC 4.5 7.5 Supply Voltage Range Boot to SW 4.5 7.5 Output Voltage Range VO 0.5 0.86xVin Output Current Range IO 0 ±12 A Switching Frequency FS 300 1500 kHz Operating Junction Temperature TJ ‐40 125 °C *Maximum SW node voltage should not exceed 25V. **For internally biased single rail operation. When Vin drops below 6.8V, the internal LDO enters dropout. Please refer to Smart LDO section and Over Current Protection for detailed application information. *** Vcc/LDO_out can be connected to an external regulated supply. If so, the Vin input should be connected to Vcc/LDO_out pin. ELECTRICAL CHARACTERISTICS Unless otherwise specified, these specifications apply over, 6.8V < Vin = PVin < 21V, Vref = 0.5V in 0°C < TJ < 125°C. Typical values are specified at Ta = 25°C. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Power Stage Power Losses PLOSS Vin = 12V, VO = 1.2V, IO = 12A, Fs = 600kHz, L = 0.51uH, Vcc = 6.4V (Internal LDO),Note 4 2.1 W Top Switch Rds(on)_Top VBoot ‐ Vsw= 6.4V,IO = 12A,Tj=25°C 13.2 17.2 mΩ Bottom Switch Rds(on)_Bot Vcc = 6.4V, IO = 12A 7.2 9.4 Bootstrap Diode Forward Voltage I(Boot) = 15mA 200 300 500 mV SW Leakage Current ISW SW = 0V, Enable = 0V 1 µA SW = 0V, Enable = high, Vp = 0V Dead Band Time Tdb Note 4 20 ns Supply Current VIN Supply Current (standby) Iin(Standby) EN = Low, No Switching 100 µA VIN Supply Current (dynamic) Iin(Dyn) EN = High, Fs = 600kHz, Vin = PVin = 21V 14 18 mA VCC LDO Output Output Voltage Vcc Vin(min) = 6.8V, Icc = 0‐50mA, Cload = 2.2uF, DCM = 0 6.0 6.4 6.7 V Vin(min) = 6.8V, Icc = 0‐50mA, Cload = 2.2uF, DCM = 1 4.0 4.4 4.85 VCC Dropout Vcc_drop Icc=50mA,Cload=2.2uF 0.8 V Short Circuit Current Ishort 70 mA |
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