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TPS544x25 Datasheet(PDF) 8 Page - Texas Instruments |
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TPS544x25 Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 100 page  8 TPS544C25, TPS544B25 SLUSC81 – MAY 2015 www.ti.com Product Folder Links: TPS544C25 TPS544B25 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Electrical Characteristics (continued) TJ = –40°C to 125°C, VVIN = VVDD= 12 V, RRT = 40.2 kΩ; zero power dissipation (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT (3) The setting of TON_RISE of 0 ms means the unit to bring its output voltage to the programmed regulation value as quickly as possible, which results in an effective TON_RISE time of 1 ms (fastest time supported). (4) The setting of TON_MAX_FAULT_LIMIT and VOUT_UV_FAULT_LIMIT of 0 means disabling TON_MAX_FAULT and VOUT_UV_FAULT response and reporting, respectively. (5) The setting of TOFF_FALL of 0 ms means the unit to bring its output voltage down to 0 as quickly as possible, which results in an effective TOFF_FALL time of 1 ms (fastest time supported). BP6 REGULATOR VBP6 Regulator output voltage IBP6 = 10 mA 5.85 6.4 6.9 V VBP6(do) Regulator dropout voltage VVIN – VBP6, VVDD = 4.5 V, IBP6 = 25 mA 50 200 400 mV IBP6SC Regulator short-circuit current(1) VVDD = 12 V 150 mA VBP6UV Regulator UVLO voltage(1) 3.73 V VBP6UV(hyst) Regulator UVLO voltage hysteresis(1) 320 mV BOOTSTRAP VBOOT(drop) Bootstrap voltage drop IBOOT = 5 mA 125 mV BP3 REGULATOR VBP3 3-V regulator output voltage VVDD ≥ 4.5 V, IBP3 = 5 mA 3.0 3.2 3.4 V IBP3SC 3-V regulator short-circuit current(1) 35 mA PWM tON(min) Minimum controllable pulse width(1) 100 ns SOFT-START TON_RISE Soft-start time Factory default setting 5 ms Programmable range, 16 discrete settings(1)(3) 0 100 Accuracy, TON_RISE = 1 ms -10 10 % TON_MAX_FAULT_ LIMIT Upper limit on the time to power up the output Factory default setting 100 ms Programmable range, 16 discrete settings(1)(4) 0 100 Accuracy(1) –10 10 % TON_DELAY Turn-on delay Factory default setting 0 ms Programmable range, 16 discrete settings(1) 0 100 Accuracy(1) –10 10 % SOFT-STOP TOFF_FALL Soft-stop time Factory default setting(5) 0 ms Programmable range, 16 discrete settings(1)(5) 0 100 Accuracy, TOFF_FALL = 1 ms –10 10 % TOFF_DELAY Turn-off delay Factory default setting 0 ms Programmable range, 16 discrete settings(1) 0 100 Accuracy(1) –10 10 % SS PIN FOR INITIAL SOFT-START PROGRAMMING ISS SS pin current 9.5 10.5 12 µA VSS(ivlow) SS pin invalid low voltage 0.03 V VSS(ivhigh) SS pin invalid high voltage 2.40 |
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