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TPS53317RGBR Datasheet(PDF) 4 Page - Texas Instruments |
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TPS53317RGBR Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 25 page  TPS53317 SLUSAK4 – JUNE 2011 www.ti.com ELECTRICAL CHARACTERISTICS over recommended free-air temperature range, VV5IN = 5.0 V, PGND = GND (unless otherwise noted) PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY: VOLTAGE, CURRENTS AND 5 V UVLO IVINSD VIN shutdown current EN = 'LO' 0.02 5 µA V5VIN 5VIN supply voltage V5IN voltage range 4.5 5.0 6.5 V I5VIN 5VIN supply current EN = ’HI’, V5IN supply current 1.1 2 mA I5VINSD 5VIN shutdown current EN = ‘LO’, V5IN shutdown current 0.2 7.0 µA VV5UVLO V5IN UVLO Ramp up; EN = 'HI' 4.20 4.37 4.50 V VV5UVHYS V5IN UVLO hysteresis Falling hysteresis 440 mV VVREFUVLO REF UVLO(1) Rising edge of VREF, EN = 'HI' 1.8 V VVREFUVHYS REF UVLO hysteresis(1) 100 mV VPOR5VFILT Reset OVP latch is reset by V5IN falling below the reset threshold 1.5 2.3 3.1 V VOLTAGE FEEDBACK LOOP: VREF, VOUT, AND VOLTAGE GM AMPLIFIER VOUTTOL VOUT accuracy VREFIN = 1 V, No droop –1% 0% 1% IVREF = 0 µA 1.98 2.00 2.02 VVREF VREF V IVREF = 50 µA 1.975 2.000 2.025 IREFSNK VREF sink current VVREF = 2.05 V 2.5 mA GM Transconductance 1.00 mS VCM Common mode input voltage range(1) 0 2 V VDM Differential mode input voltage 0 80 mV ICOMPSNK COMP pin maximum sinking current VCOMP = 2 V, (VREFIN - VOUT) = 80 mV 80 µA ICOMPSRC COMP pin maximum sourcing current VCOMP = 2 V -80 µA VOFFSET Input offset voltage TA = 25°C 0 mV RDSCH Output voltage discharge resistance 42 Ω f–3dbVL –3dB Frequency(1) 4.5 6.0 7.5 MHz CURRENT SENSE: CURRENT SENSE AMPLIFIER, OVERCURRENT AND ZERO CROSSING Gain from the current of the low-side FET to PWM comparator ACSINT Internal current sense gain 43 53 57 mV/A when PWM = "OFF" IOCL Positive overcurrent limit (valley) 7.6 A IOCL(neg) Negative overcurrent limit (valley) –9.3 A VZXOFF Zero crossing comp internal offset 0 mV PROTECTION: OVP, UVP, PGOOD, and THERMAL SHUTDOWN PGOOD deassert to lower VPGDLL Measured at the VOUT pin wrt/ VREFIN 84% (PGOOD → Low) VPGHYSHL PGOOD high hysteresis 8% PGOOD de-assert to higher VPGDLH Measured at the VOUT pin wrt/ VREFIN 116% (PGOOD → Low) VPGHYSHH PGOOD high hysteresis -8% Minimum VIN voltage for valid Measured at the VIN pin with a 2-mA sink current on PGOOD VINMINPG 0.9 1.3 1.5 V PGOOD pin VOVP OVP threshold Measured at the VOUT pin wrt/ VREFIN 117% 120% 123% Measured at the VOUT pin wrt/ VREFIN, device latches OFF, VUVP UVP threshold 65% 68% 71% begins soft-stop THSD Thermal shutdown(1) Latch off controller, attempt soft-stop. 145 °C THSD(hys) Thermal Shutdown hysteresis(1) Controller re-starts after temperature has dropped 10 °C (1) Ensured by design, not production tested. 4 Copyright © 2011, Texas Instruments Incorporated |
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