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TPS54262QPWPRQ1 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS54262QPWPRQ1 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 44 page  TPS54262-Q1 www.ti.com SLVS996C – SEPTEMBER 2009 – REVISED JUNE 2010 DC ELECTRICAL CHARACTERISTICS VIN = 7 V to 48 V, EN = VIN, TJ = –40°C to 150°C (unless otherwise noted) TEST PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ENABLE (EN) PT VIL Low input threshold voltage 0.7 V PT VIH High input threshold voltage 1.7 V EN = 60 V 100 135 µA PT Ilkg Leakage current into EN terminal EN = 12 V 8 15 µA RESET DELAY (Cdly) PT IO External capacitor charge current EN = high 1.4 2 2.6 µA PT VThreshold Switching threshold voltage Output voltage in regulation 2 V LOW-POWER MODE (LPM) PT VIL Low input threshold voltage VIN = 12 V 0.7 V PT VIH High input threshold voltage VIN = 12 V 1.7 V PT Ilkg Leakage current into LPM terminal LPM = 5 V 65 95 µA RESET OUTPUT (RST) PT trdly POR delay timer Based on Cdly capacitor 3.6 7 ms/nF PT VReg_RST Reset threshold voltage for VReg Check RST output 0.768 0.832 V PT tnRSTdly Filter time Delay before RST is asserted low 10 20 35 µs SOFT START (SS) PT ISS Soft-start source current 40 50 60 µA SYNCHRONIZATION (SYNC) PT VIL Low input threshold voltage 0.7 V PT VIH High input threshold voltage 1.7 V PT Ilkg Leakage current SYNC = 5 V 65 95 µA VIN = 12 V, VReg = 5 V, CT SYNC (fext) External input clock frequency 180 2200 kHz 180 kHz < fsw < fext < 2 × fsw < 2.2 MHz Info SYNCtrans External clock to internal clock No external clock, VIN = 12 V, VReg = 5 V 32 µs External clock = 1 MHz, VIN = 12 V, Info SYNCtrans Internal clock to external clock 2.5 µs VReg = 5 V CT SYNCCLK Minimum duty cycle 30 % CT SYNCCLK Maximum duty cycle 70 % Rslew CT IRslew Rslew = 50 k Ω 20 µA CT IRslew Rslew = 10 k Ω 100 µA OVERVOLTAGE SUPERVISORS (OV_TH) Threshold voltage for VReg during Internal switch is turned off 0.768 0.832 V overvoltage PT VReg_OV VReg = 5 V Internal pulldown on VReg, OV_TH = 1 V 70(1) mA THERMAL SHUTDOWN Thermal shutdown junction CT TSD 175 °C temperature CT THYS Hysteresis 30 °C PT: Production tested CT: Characterization tested only, not production tested (1) This is the current flowing into the VReg pin when voltage at OV_TH pin is 1 V. Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): TPS54262-Q1 |
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