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TPS92511 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS92511 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 31 page  TPS92511 www.ti.com SNVS901A – MARCH 2014 – REVISED MAY 2014 6.5 Electrical Characteristics Unless otherwise specified, -40°C ≤ TJ = TA ≤ 125°C, VIN = 48 V PARAMETER CONDITIONS MIN TYP MAX UNIT SYSTEM IIN-DIM-HIGH VIN Operating Current 4.5 V ≤ VIN ≤ 65 V, RIADJ = 3 kΩ, VDIM = High 2.8 3.15 mA IIN-DIM-LOW VIN Standby Current 4.5 V ≤ VIN ≤ 65 V, RIADJ = 3 kΩ, VDIM = Low 2.3 2.7 mA ILX-OFF LX Pin Current Main switch turned OFF, VLX = VIN = 65 V 0.1 1.0 µA VFS = 4.6V, RIADJ = 3 kΩ, TA = 25°C 484 502 520 mA VFS = 4.6V, RIADJ = 3 kΩ 477 502 528 mA VFS = 4.6V, RIADJ = 6 kΩ, TA = 25°C 236 249 262 mA ILED Average LED Current VFS = 4.6V, RIADJ = 6 kΩ 233 249 268 mA VFS = 4.6V, RIADJ = 10 kΩ, TA = 25°C 138 149 160 mA VFS = 4.6V, RIADJ = 10 kΩ 133 149 166 mA VIADJ IADJ Pin voltage 1.224 1.25 1.278 V VDIM-ON DIM Pin Upper Threshold VDIM Increasing 0.85 1.0 1.25 V VDIM-OFF DIM Pin Lower Threshold VDIM Decreasing 0.44 V VDIM-HYS DIM Pin Threshold Hysteresis 325 mV fSW Switching frequency RFS = 20 kΩ 450 500 550 kHz ton(min) Minimum On-time 250 400 ns INTERNAL REGULATOR VCC VCC Regulated Output Voltage CVCC =1 µF, no load 4.7 5.4 6.0 V CVCC =1 µF, VIN = 4.5V, 2 mA load 3.7 4.1 V VCC-UVLO-ON VCC UVLO Upper Threshold VCC rising 3.50 3.75 4.00 V VCC-UVLO-OFF VCC UVLO Lower Threshold VCC falling 3.05 V VCC-UVLO-HYS VCC UVLO Hysteresis 275 mV INTEGRATED MOSFET RLX Resistance Across LX and GND Main Switch Turned ON, TA = 25°C 1.4 2.15 Ω THERMAL SHUTDOWN TSD Thermal shutdown temperature TJ Rising 165 °C TSD-HYS Thermal shutdown hysteresis TJ Falling 10 Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TPS92511 |
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