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TPS79401DGNR Datasheet(PDF) 3 Page - Texas Instruments |
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TPS79401DGNR Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 23 page  www.ti.com ELECTRICAL CHARACTERISTICS TPS794xx SLVS349E – NOVEMBER 2001 – REVISED DECEMBER 2005 Over recommended operating temperature range (T J = –40°C to 125°C), VEN = VIN, VIN = VOUT(nom) + 1 V (1), I OUT = 1mA, C OUT = 10µF, CNR = 0.01 µF, unless otherwise noted. Typical values are at 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input voltage, VIN(1) 2.7 5.5 V Continuous output current, IOUT 0 250 mA Output voltage range TPS79401 1.225 5.5 – VDO V Output TPS79401(2) 0 µA ≤ I OUT ≤ 250 mA, VOUT + 1 V ≤ VIN ≤ 5.5 V (1) 0.97(VOUT) VOUT 1.03(VOUT) V voltage Accuracy Fixed VOUT 0 µA ≤ I OUT ≤ 250 mA, VOUT + 1 V ≤ VIN ≤ 5.5 V (1) –3.0 +3.0 % Output voltage line regulation ( ∆V OUT%/∆VIN) (1) VOUT + 1 V ≤ VIN ≤ 5.5 V 0.05 0.12 %/V Load regulation ( ∆V OUT%/∆IOUT) 0 µA ≤ I OUT ≤ 250 mA 10 mV TPS79428 IOUT = 250 mA 155 210 Dropout voltage(3) TPS79430 IOUT = 250 mA 155 210 mV VIN = VOUT(nom)– 0.1 V TPS79433 IOUT = 250 mA 145 200 Output current limit VOUT = 0 V 925 mA Ground pin current 0 µA ≤ I OUT ≤ 250 mA 170 220 µA Shutdown current(4) VEN = 0 V, 2.7 V ≤ VIN ≤ 5.5 V 0.07 1 µA FB pin current VFB = 1.225 V 1 µA f = 100 Hz, IOUT = 250 mA 65 Power-supply ripple rejection TPS79428 f = 10 kHz, IOUT = 250 mA 60 dB f = 100 kHz, IOUT = 250 mA 40 CNR = 0.001 µF 55 CNR = 0.0047 µF 36 BW = 100 Hz to 100 kHz, Output noise voltage TPS79428 µV RMS IOUT = 250 mA CNR = 0.01 µF 33 CNR = 0.1 µF 32 CNR = 0.001 µF 50 Time, start-up TPS79428 RL = 14 Ω, COUT = 1 µF CNR = 0.0047 µF 70 µs CNR = 0.01 µF 100 High-level enable input voltage 2.7 V ≤ V IN ≤ 5.5 V 1.7 VIN V Low-level enable input voltage 2.7 V ≤ V IN ≤ 5.5 V 0 0.7 V EN pin current VEN = 0 1 1 µA UVLO threshold VCC rising 2.25 2.65 V UVLO hysteresis 100 mV (1) Minimum VIN is 2.7 V or VOUT + VDO, whichever is greater. (2) Tolerance of external resistors not included in this specification. (3) Dropout is not measured for the TPS79418 and TPS79425 since minimum VIN = 2.7 V. (4) For adjustable versions, this applies only after VIN is applied; then VEN transitions high to low. 3 Submit Documentation Feedback |
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