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TPS54122RHLR Datasheet(PDF) 6 Page - Texas Instruments |
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TPS54122RHLR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 40 page  6 TPS54122 SBVS221B – NOVEMBER 2013 – REVISED AUGUST 2016 www.ti.com Product Folder Links: TPS54122 Submit Documentation Feedback Copyright © 2013–2016, Texas Instruments Incorporated Electrical Characteristics (continued) at TJ = –40°C to +125°C, VBIAS = VVIN = 5 V, VLDOIN = DC-DC_OUT (1) = 2.1 V, V LDOEN = 1.1 V, VO = 1.8 V, IO = 50 mA, VEN = floating, and COUT = 10.0 μF, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DC-DC POWER GOOD (PWRGD PIN) VSENSE pin threshold VSENSE falling (fault) 0.91 Vref V VSENSE rising (good) 0.93 Vref V VSENSE rising (fault) 1.07 Vref V VSENSE falling (good) 1.05 Vref V High-level output leakage current VVSENSE = Vref, VPWRGD = 5.5 V, VEN = 3 V 2 nA Low-level output voltage IPWRGD = 3 mA 0.3 0.6 V Minimum VIN voltage for valid output VPWRGD < 0.5 V at 100 µA 1.2 1.6 V LDO VLDOIN LDO input voltage range VO + VDO 5.5 V VBIAS LDO bias input voltage range 2.375 5.5 V VFB FB pin voltage TA = 25°C 0.796 0.8 0.804 V VO OUT pin voltage range VFB 3.6 V OUT pin voltage accuracy VO = VFB, 50 mA ≤ IO < 3 A, 2.97 V ≤ VBIAS ≤ 5.25 V, VLDOIN ≥ VOUT(nom) + 0.3 V, VBIAS ≥ VOUT(nom) + 1.62 V –1.0% ±0.2% 1.0% ΔVO(ΔIL) Load regulation 0 mA ≤ IOUT ≤ 50 mA 0.013 %/mA 50 mA ≤ IOUT ≤ 3 A 0.03 %/A ΔVO(ΔVI) Line regulation VOUT(nom) + 0.3 V ≤ VLDOIN ≤ 5.5 V 0.0005 0.06 %/V VDO(LDOIN) VLDOIN dropout voltage IO ≤ 3.0 A, VBIAS – VOUT(nom) ≥ 1.62 V 100 200 mV VDO(BIAS) VBIAS dropout voltage IO ≤ 3.0 A, VLDOIN = VBIAS 1.62 V ILIM Output current limit VO = 0.8 × VOUT(nom) 3.8 6.0 A IBIAS BIAS pin current 2 4 mA ISD(LDO) Shutdown current (IBIAS) VEN < 0.4 V 1 100 µA IFB FB pin current –250 95 250 nA ILDOEN LDOEN pin input current VEN = 5 V 0.1 1 µA VIL(LDOEN) LDOEN pin low-level input voltage (disable) 0.4 V VIH(LDOEN) LDOEN pin high-level input voltage (enable) 1.1 V PG pin trip threshold VFB decreasing 0.86 VFB 0.90 VFB 0.94 VFB V PG pin trip hysteresis 0.03 VFB V High-level output leakage current VPG = 5.25 V 0.03 1 µA Low-level output voltage IPG = 1 mA 0.3 V INR NR pin charging current VNR = 0.4 V 0.5 0.73 1 µA THERMAL SHUTDOWN Tsd Thermal shutdown temperature Shutdown, temperature increasing 160 °C Reset, temperature decreasing 140 °C NOISE Vn Output noise voltage BW = 10 Hz to 1 MHz, CNR = 10 µF, CFB = 0.1 µF, IO = 1 A , COUT = 100 µF 17 µVRMS |
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