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TPS71319 数据表(PDF) 3 Page - Texas Instruments |
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TPS71319 数据表(HTML) 3 Page - Texas Instruments |
3 / 15 page www.ti.com ELECTRICAL CHARACTERISTICS TPS71319 TPS71334 SBVS055A – DECEMBER 2004 – REVISED JANUARY 2005 Over operating temperature range (T J = -40°C to +125°C), VIN = highest VOUT(nom) + 1.0 V or 2.7 V (whichever is greater), I OUT = 1 mA, VEN1, 2 = 1.2 V, COUT = 10 µF, CNR = 0.01 µF, and adjustable LDOs are tested at VOUT = 3.0 V, unless otherwise noted. Typical values are at T J = 25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN Input voltage range(1) 2.7 5.5 V VFB Internal reference (adjustable LDOs) 1.200 1.225 1.250 V Output voltage range VFB 5.5 - VDO V (adjustable LDOs) VOUT Nominal TJ = 25°C, IOUT = 0 mA -1.5 +1.5 Accuracy(1) % Over VIN, VOUT + 1.0 V ≤ VIN ≤ 5.5 V, -3 ±1 +3 IOUT, and T 0 µA ≤ IOUT ≤ 250 mA ∆V OUT%/∆VIN Line regulation(1) VOUT + 1.0 V ≤ VIN ≤ 5.5 V 0.05 %/V ∆V OUT%/∆IOUT Load regulation 0 µA ≤ I OUT ≤ 250 mA 0.8 %/mA 2.8 V, Dropout voltage(2) VDO 2.85 V IOUT1 = IOUT2 = 250 mA 125 230 mV (VIN = VOUT(nom) - 0.1V) Adjustable ICL Output current limit VOUT = 0.9 × VOUT(nom) 400 600 800 mA One LDO IOUT = 1 mA (enabled channel) 190 250 enabled IGND Ground pin current µA Both LDOs IOUT1 = IOUT2 = 1 mA to 250 mA 300 600 enabled VEN ≤ 0.4 V, 0 V ≤ VIN ≤ 5.5 V, ISHDN Shutdown current(3) 0.3 2.0 µA RESET open IFB FB pin current (adjustable LDOs) 0.1 1 µA No CNR, IOUT = 250 mA 80.0 × V OUT Output noise voltage, Vn µVrms BW = 10 Hz - 100 kHz CNR = 0.01 µF, IOUT = 250 mA 11.8 × V OUT f = 100 Hz, IOUT = 250 mA 65 Power-supply rejection ratio PSRR dB (ripple rejection) f = 10 kHz, IOUT = 250 mA 65 tSTR Startup time VOUT = 2.85 V, RL = 30Ω, CNR = 0.001 µF 60 µs VIH Enable threshold high (EN1, EN2) 1.2 VIN V VIL Enable threshold low (EN1, EN2) 0 0.4 V IEN Enable pin current (EN1, EN2) VIN = VEN = 5.5 V -1 1 µA Minimum VIN for valid RESET IRESET = 10 µA 0.6 V VRESET, LO RESET output low voltage IRESET = 1 mA 0.4 V ILKG, RESET RESET leakage current VIN = VRESET = 5.5 V 10 500 nA VIT RESET threshold voltage VOUT2 falling(4) 92.5 97.5 %VOUT VHYS RESET threshold hysteresis VOUT2 rising(4) 0.5 %VOUT TD RESET delay time 50 100 200 ms TP RESET propagation delay 10 µs Shutdown Temp increasing +160 TSD Thermal shutdown temperature °C Reset Temp decreasing +140 Under-voltage lockout threshold VIN rising 2.25 2.65 V UVLO Under-voltage lockout hysteresis VIN falling 100 mV (1) Minimum VIN = VOUT + VDO or 2.7 V, whichever is greater. (2) VDO is not measured for 1.8 V regulators since minimum VIN = 2.7 V. (3) For the adjustable version, this applies only after VIN is applied; then VEN transitions from high to low. (4) RESET threshold and hysteresis is a percentage of the measured output. 3 |
类似零件编号 - TPS71319 |
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类似说明 - TPS71319 |
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