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TPS720 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS720 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 19 page  ELECTRICAL CHARACTERISTICS TPS720xx www.ti.com ............................................................................................................................................................. SBVS100A – JUNE 2008 – REVISED JUNE 2008 Over operating temperature range (TJ = –40°C to +125°C), VBIAS = (VOUT + 1.4V) or 2.5V (whichever is greater); VIN ≥ VOUT + 0.5V, IOUT = 1mA, VEN = 1.1V, COUT = 2.2µF, unless otherwise noted. Typical values are at TJ = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN Input voltage range 1.1(1) 4.5 V VBIAS Bias voltage range 2.5 5.5 V Output voltage range(3) 0.9 3.6 V Nominal TJ = +25°C –3.0 +3.0 mV VOUT + 1.4V ≤ VBIAS ≤ 5.5V, Over VBIAS, VIN, IOUT, VOUT (2) Output VOUT + 0.5V ≤ VIN ≤ 4.5V, –2.0 +2.0 % TJ = –40°C to +125°C accuracy 0mA ≤ IOUT ≤ 350mA VOUT + 1.4V ≤ VBIAS ≤ 5.5V, VIN floating ±1.0 % 0 µA ≤ I OUT ≤ 500µA ΔVOUT/ΔVIN VIN line regulation VIN = (VOUT + 0.5V) to 4.5V, IOUT = 1mA 16 µV/V VBIAS = (VOUT + 1.4V) or 2.5V (whichever is ΔVOUT/ΔVBIAS VBIAS line regulation 16 µV/V greater) to 5.5V, IOUT = 1mA VIN line transient ΔVIN = 400mV, tRISE = tFALL = 1µs ±200 µV VBIAS line transient ΔVBIAS = 600mV, tRISE = tFALL = 1µs ±0.8 mV ΔVOUT/ΔIOUT Load regulation 0mA ≤ IOUT ≤ 350mA (no load to full load) –15 µV/mA Load transient 0mA ≤ IOUT ≤ 350mA, tRISE = tFALL = 1µs ±15 mV VIN = VOUT(NOM) – 0.1V, VDO_IN VIN dropout voltage (4) (VBIAS – VOUT(NOM)) = 1.4V, 110 200 mV IOUT = 350mA VDO_BIAS VBIAS dropout voltage (5) VIN = VOUT(NOM) + 0.3V, IOUT = 350mA 1.09 1.4 V ICL Output current limit VOUT = 0.9 × VOUT(NOM) 420 525 800 mA IOUT = 100µA 38 µA IGND Ground pin current IOUT = 0mA to 350mA 54 80 µA ISHDN Shutdown current (IGND) VEN ≤ 0.4V, TJ = -40°C to +85°C 0.5 2 µA f = 10Hz 85 dB f = 100Hz 85 dB VIN – VOUT ≥ 0.5V, f = 1kHz 85 dB VIN power-supply rejection ratio VBIAS = VOUT + 1.4V, f = 10kHz 80 dB IOUT = 350mA f = 100kHz 70 dB f = 1MHz 50 dB PSRR f = 10Hz 80 dB f = 100Hz 80 dB VIN – VOUT ≥ 0.5V, f = 1kHz 75 dB VBIAS power-supply rejection ratio VBIAS = VOUT + 1.4V, f = 10kHz 65 dB IOUT = 350mA f = 100kHz 55 dB f = 1MHz 35 dB BW = 10Hz to 100kHz, VBIAS ≥ 2.5V, VN Output noise voltage 48 µV RMS VIN = VOUT + 0.5V VBIAS = (VOUT +1.4V) or 2.5V (whichever is 100 + IVIN_INRUSH Inrush current on VIN mA greater), VIN = VOUT + 0.5V ILOAD VOUT = 95% VOUT(NOM), IOUT = 350mA, tSTR Startup time 140 µs COUT = 2.2µF VEN(HI) Enable pin high (enabled) 1.1 V VEN(LO) Enable pin low (disabled) 0 0.4 V (1) Performance specifications are ensured up to a minimum VIN = VOUT + 0.5V. (2) Minimum VBIAS = (VOUT + 1.4V) or 2.5V (whichever is greater) and VIN= VOUT + 0.5V. (3) VO nominal value is factory programmable through the onchip EEPROM. (4) Measured for devices with VOUT(NOM) ≥ 1.2V. (5) VBIAS – VOUT with VOUT = VOUT(NOM) – 0.1V. Measured for devices with VOUT(NOM) ≥ 1.8V. Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 3 |
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