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TPS734XX Datasheet(PDF) 3 Page - Texas Instruments |
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TPS734XX Datasheet(HTML) 3 Page - Texas Instruments |
3 / 20 page ELECTRICAL CHARACTERISTICS TPS734xx www.ti.com ........................................................................................................................................ SBVS089F – DECEMBER 2007 – REVISED FEBRUARY 2009 Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.3V or 2.7V, whichever is greater; IOUT = 1mA, VEN = VIN, COUT = 2.2µF, CNR = 0.01µF, unless otherwise noted. For TPS73401, VOUT = 3.0V. Typical values are at TJ = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN Input voltage range(1) 2.7 6.5 V VFB Internal reference (TPS73401) 1.184 1.208 1.232 V VOUT Output voltage range (TPS73401) VFB 6.3 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 1mA ≤ IOUT ≤ 250mA ΔVOUT%/ ΔVIN Line regulation(1) VOUT(NOM) + 0.3V ≤ VIN ≤ 6.5V 0.02 %/V ΔVOUT%/ ΔIOUT Load regulation 500 µA ≤ I OUT ≤ 250mA 0.005 %/mA Dropout voltage(2) VDO IOUT = 250mA 125 219 mV (VIN = VOUT(NOM) – 0.1V) ICL Output current limit VOUT = 0.9 × VOUT(NOM) 300 580 900 mA IGND Ground pin current 500 µA ≤ I OUT ≤ 250mA 45 65 µA ISHDN Shutdown current (IGND) VEN ≤ 0.4V 0.15 1.0 µA IFB Feedback pin current (TPS73401) –0.5 0.5 µA f = 100Hz 60 dB Power-supply rejection ratio f = 1kHz 56 dB PSRR VIN = 3.85V, VOUT = 2.85V, f = 10kHz 41 dB CNR = 0.01µF, IOUT = 100mA f = 100kHz 28 dB CNR = 0.01µF 11 x VOUT µV RMS Output noise voltage VN BW = 10Hz to 100kHz, VOUT = 2.8V CNR = none 95 x VOUT µV RMS CNR = none 45 µs Startup time, CNR = 0.001µF 45 µs VOUT = 0 ~ 90%, TSTR VOUT = 2.85V, CNR = 0.01µF 50 µs RL = 14Ω, COUT = 2.2µF CNR = 0.047µF 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 increasing 165 °C TSD Thermal shutdown temperature Reset, temperature decreasing 145 °C TJ Operating junction temperature –40 +125 °C Undervoltage 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. Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 3 |
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