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www.ti.com ELECTRICAL CHARACTERISTICS TPS799xx SBVS056H – JANUARY 2005 – REVISED MAY 2007 Over operating temperature range (T J = –40°C to +125°C), VIN = VOUT(TYP) + 0.3V or 2.7V, whichever is greater; IOUT = 1mA, V EN = VIN, COUT = 2.2µF, CNR = 0.01µF, unless otherwise noted. For TPS79901, VOUT = 3.0V. Typical values are at T J = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN Input voltage range(1) 2.7 6.5 V VFB Internal reference (TPS79901) 1.169 1.193 1.217 V VOUT Output voltage range (TPS79901) VFB 6.5 – VDO V VOUT Output accuracy Nominal TJ = +25°C –1.0 +1.0 % Over VIN, VOUT + 0.3V ≤ VIN ≤ 6.5V VOUT Output accuracy(1) –2.0 ±1.0 +2.0 % IOUT, Temp 500 µA ≤ I OUT ≤ 200mA ∆V OUT%/ ∆VIN Line regulation(1) VOUT(NOM) + 0.3V ≤ VIN ≤ 6.5V 0.02 %/V ∆V OUT%/ ∆IOUT Load regulation 500 µA ≤ I OUT ≤ 200mA 0.002 %/mA Dropout voltage(2) VDO VOUT < 3.3V IOUT = 200mA 100 175 mV (VIN = VOUT(NOM) – 0.1V) Dropout voltage VDO VOUT ≥ 3.3V IOUT = 200mA 90 160 mV (VIN = VOUT(NOM) – 0.1V) ICL Output current limit VOUT = 0.9 × VOUT(NOM) 200 400 600 mA IGND Ground pin current 500 µA ≤ I OUT ≤ 200mA 40 60 µA ISHDN Shutdown current (IGND) VEN ≤ 0.4V, 2.7V ≤ VIN ≤ 6.5V 0.15 1.0 µA IFB Feedback pin current (TPS79901) –0.5 0.5 µA f = 100Hz 70 dB Power-supply rejection ratio f = 1kHz 66 dB PSRR VIN = 3.85V, VOUT = 2.85V, f = 10kHz 51 dB CNR = 0.01µF, IOUT = 100mA f = 100kHz 38 dB CNR = 0.01µF 10.5 x VOUT µV RMS Output noise voltage VN BW = 10Hz to 100kHz, VOUT = 2.8V CNR = none 94 x VOUT µV RMS CNR = 0.001µF 45 µs Startup time CNR = 0.047µF 45 µs TSTR VOUT = 2.85V, CNR = 0.01µF 50 µs RL = 14Ω, COUT = 2.2µF CNR = none 50 µs VEN(HI) Enable high (enabled) 1.2 VIN V VEN(LO) Enable low (shutdown) 0 0.4 V IEN(HI) Enable pin current, enabled VEN = VIN = 6.5V 0.03 1.0 µA Shutdown, temperature 165 °C increasing TSD Thermal shutdown temperature Reset, temperature decreasing 145 °C TJ Operating junction temperature –40 +125 °C Under-voltage lock-out VIN rising 1.90 2.20 2.65 V UVLO Hysteresis VIN falling 70 mV (1) Minimum VIN = VOUT + VDO or 2.7V, whichever is greater. (2) VDO is not measured for devices with VOUT(NOM) < 2.8V because minimum VIN = 2.7V. 3 |
