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TPS53316RGTR Datasheet(PDF) 4 Page - Texas Instruments |
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TPS53316RGTR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 29 page TPS53316 SLUSAP5 – DECEMBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS over operating free-air temperature range, VIN = 3.3V, PGND = GND (unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY: VOLTAGE, CURRENTS, AND UVLO VVIN VIN supply voltage Nominal input voltage range 2.9 6.0 V IVIN(sdn) VIN shutdown current EN = LO 15 µA IVIN VIN supply current EN = HI, VFB = 0.63 V, No load 2.0 3.5 mA VUVLO VIN UVLO threshold Ramp up; EN =HI 2.8 V VUVLO(hys) VIN UVLO hysteresis VIN UVLO hysteresis 120 mV VREG3 LDO output VVIN = 5 V, 0 ≤ IDD ≤ 5 mA 3.135 3.3 3.465 V VOLTAGE FEEDBACK LOOP: VREF AND ERROR AMPLIFIER VVREF VREF Internal precision reference voltage 0.6 V 0 °C ≤ TA≤ 85°C –1% 1% TOLVREF VREF tolerance –40°C ≤ TA≤ 85°C –1.25% 1.25% UGBW(1) Unity gain bandwidth 14 MHz AOL (1) Open loop gain 80 dB IFBINT FB input leakage current Sourced from FB pin 30 nA Outaput sinking and sourcing IEA(max) (1) CCOMP = 20 pF 5 mA current SR(1) Slew rate 5 V/ µs OCP: OVERCURRENT AND ZERO CROSSING 4.5-A setting, when IOUT exceeds this threshold for 4 consecutive cycles, IOCPL3A (2) Overcurrent limit on high-side FET 4.05 4.5 4.95 A VVIN = 3.3V, VOUT = 1.5 V with 1-µH inductor, fSW = 1.1 MHz, TA= 25°C 4.5-A setting, immediate shut down when sensed current reach this value One-time overcurrent latch off on IOCPH3A (2) 4.49 5.1 5.61 A the low-side FET VVIN = 3.3 V, VOUT = 0.6 V with 1-µH inductor, fSW = 1.1 MHz, TA= 25°C 6.5-A setting, when IOUT exceeds this threshold for 4 consecutive cycles, IOCPL5A (2) Overcurrent limit on high-side FET 6.1 6.8 7.5 A VVIN = 3.3 V, VOUT = 1.5 V with 1-µH inductor, fSW = 1.1 MHz, TA= 25°C 6.5-A setting, immediate shut down when sensed current reach this value One time overcurrent latch off on IOCPH5A (2) 6.75 7.50 8.30 A the low-side FET VVIN = 3.3 V, VOUT = 0.6 V with 1-µH inductor, fSW = 1.1 MHz, TA= 25°C thiccup Hiccup time interval fSW = 1.1 MHz 14.5 ms Zero crossing comparator internal VZXOFF (1) PGND – SW, SKIP mode –4.5 –3.0 –1.5 mV offset PROTECTION: OVP, UVP, PGD, AND INTERNAL THERMAL SHUTDOWN Overvoltage protection threshold VOVP Measured at the FB w/r/t VREF 114% 117% 120% voltage Undervoltage protection Threshold VUVP Measured at the FB w/r/t VREF 80% 83% 86% voltage VPGDL PGD low threshold Measured at the FB w/r/t VREF 80% 83% 86% VPGDU PGD upper threshold Measured at the FB w/r/t .VREF 114% 117% 120% Minimum input voltage for valid Measured at VIN with 1-mA sink current on PGD VINMINPG 1 V PGD at start-up pin at start up THSD(1) Thermal shutdown 130 140 150 °C Controller start again after temperature has THSDHYS (1) Thermal shutdown hysteresis 40 °C dropped (1) Ensured by design. Not production tested. (2) See Figure 5 and Figure 6 on OCP level for other operating conditions. 4 Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s) :TPS53316 |
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