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IP1837 データシート(PDF) 7 Page - International Rectifier |
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IP1837 データシート(HTML) 7 Page - International Rectifier |
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7 / 40 page ![]() iP1837 Highly Integrated 35A Single‐input Voltage, Synchronous Buck Regulator March 5, 2012 | V1.26 7 97600 ELECTRICAL SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS SYMBOL DEFINITION MIN MAX UNITS VIN Input Voltage 1.5 16 PVCC Supply Voltage 4.5 7.5 VCC Supply Voltage 3.13 3.46 Boot to SW Supply Voltage 4.5 7.5 VO Output Voltage 0.6 0.75 Vin V IO Output Current 0 35 A Fs Switching Frequency 225 1650 kHz TJ Junction Temperature ‐40 125 °C ELECTRICAL CHARACTERISTICS Unless otherwise specified, these specification apply over, 1.5V < Vin < 16V, 3.13V < Vcc < 3.46V. 0 oC < T J < 125 oC. Typical values are specified at TA = 25 oC. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Power Loss Power Loss PLOSS Vin = 12V, VCC = 3.3V, VO = 1.8V, IO = 35A, Fs = 600kHz, L=0.215uH, TA = 25°C 7.12 W MOSFET Rds(on) Top Switch Rds(on)_Top VBoot – VSW = 5V, ID = 5A, Tj = 25°C 4.8 6 PVCC = 5V, ID = 25A, Tj = 25°C 1.45 1.64 Bottom Switch VCC = 3.3V, ID = 25A, Tj = 25°C 1.2 1.35 mΩ Reference Voltage Feedback Voltage VFB 0.6 V 40°C < Tj < 105°C ‐0.5 +0.5 Accuracy ‐40°C < Tj < 125°C, Note 3 ‐1.5 +1.5 % Supply Current VCC Supply Current (Standby) ICC(Standby) Enable low, No Switching, VCC = 3.3V 400 600 uA VCC Supply Current (Dyn) ICC(Dyn) Enable high, Fs = 500kHz, VCC = 3.3V 95 mA PVCC Supply Current (Standby) IPCC(Standby) Enable low, No Switching, PVCC = 5V 150 200 uA PVCC Supply Current (Dyn) IPCC(Dyn) Enable high, Fs = 500kHz, PVCC = 5V 36 mA Under Voltage Lockout PVCC – Start – Threshold PVCC_UVLO_Start PVCC Rising Trip Level 4.0 4.2 4.4 PVCC – Stop – Threshold PVCC_UVLO_Stop PVCC Falling Trip Level 3.7 3.9 4.1 V |
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