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TPS61054 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS61054 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 27 page ELECTRICAL CHARACTERISTICS TPS61054, TPS61055 www.ti.com .................................................................................................................................................. SLUS760A – SEPTEMBER 2007 – REVISED MAY 2008 Unless otherwise noted the specification applies for VIN = 3.6 V over an operating junction temp. of –40°C ≤ TJ ≤ 125°C. Typical values are for TA = 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT Input voltage range 2.5 6.0 V VIN Minimum input voltage for start-up MODE0 = 1, MODE1 = 1, RL = 10 Ω 2.5 V IQ Operating quiescent current into AVIN MODE0 = 1, MODE1 = 1 8.5 mA ISD Shutdown current into AVIN MODE0 = 0, MODE1 = 0, –40 °C ≤ T J ≤ 85°C 0.3 3.0 µA VUVLO Undervoltage lockout threshold VIN falling 2.3 2.4 V OUTPUT Current regulator mode VIN 5.5 VOUT Output voltage range V Voltage regulator mode 5.0 OVP Output overvoltage protection VOUT rising 5.7 6.0 6.25 V OVP Output overvoltage protection hysterisis 0.15 V D Minimum duty cycle 7.5% 0.25 V ≤ VLED ≤ 2.0 V, ILED = ITORCH, TJ = 50°C –15% 15% LED current accuracy(1) 0.25 V ≤ VLED ≤ 2.0 V, ILED = IFLASH, TJ = 50°C –12% 12% LED current temperature coefficient 0.08 %/ °C DC output voltage accuracy 2.5 V ≤ VIN ≤ 0.9 VOUT, PWM operation –3% 3% VLED LED sense voltage Boost Mode 250 mV LED input leakage current VLED = VOUT = 5 V, –40°C ≤ TJ ≤ 85°C 0.1 1 µA POWER SWITCH Switch MOSFET on-resistance 80 rDS(on) VOUT = VGS = 3.6 V m Ω Rectifier MOSFET on-resistance 80 Switch MOSFET leakage 0.1 1 Ilkg(SW) VDS = 6.0 V, –40°C ≤ TJ ≤ 85°C µA Rectifier MOSFET leakage 0.1 1 2.5 V ≤ VIN ≤ 6.0 V, ILIM = 00 850 1000 1150 Ilim Switch current limit mA 1275 1500 1725 2.5 V ≤ VIN ≤ 6.0 V, ILIM = 01 (1) 140 160 °C Thermal shutdown (1) 20 °C Thermal shutdown hysteresis (1) OSCILLATOR fSW Oscillator frequency 1.8 2.0 2.2 MHz MODE0, MODE1, Tx-TOFF, FLASH_SYNC V(IH) High-level input voltage 1.2 V V(IL) Low-level input voltage 0.4 V I(LKG) Logic input leakage current Input connected to VIN or GND, –40°C ≤ TJ ≤ 85°C 0.01 0.1 µA Tx-TOFF pull-down resistance Tx-TOFF ≤ 0.4 V 400 k Ω FLASH_SYNC pull-down resistance FLASH_SYNC ≤ 0.4 V 400 k Ω TIMING From shutdown into flash mode ILED = 700 mA 1.2 ms Start-up time From shutdown into voltage mode 650 µs MODE0 = 1, MODE1 = 1, IOUT = 0 mA LED current settling time(2) triggered by MODE0 = 0, MODE1 = 1, 160 µs rising edge on FLASH_SYNC ILED = from 75mA to 700 mA LED current settling time(2) triggered by MODE0 = 0, MODE1 = 1, 20 µs rising edge on Tx-TOFF ILED = 700 mA to 75 mA (1) Assured by design. Not tested in production. (2) Settling time to ±15% of the target value Copyright © 2007–2008, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s) :TPS61054, TPS61055 |
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