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ELECTRICAL CHARACTERISTICS www.ti.com..................................................................................................................................................... SBVS088C – FEBRUARY 2007 – REVISED MAY 2008 Over operating temperature range (TJ = –40°C to +125°C), VIN = VOUT(TYP) + 0.5V or 2.7V, whichever is greater; IOUT = 0.5mA, VEN1 = VEN2 = VIN, COUT = 1.0µF, unless otherwise noted. Typical values are at TJ = +25°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN Input voltage range(1) 2.7 6.5 V VOUT1, VOUT2 Output voltage range 0.9 3.6 V Nominal TJ = +25°C ±2.5 mV VOUT1, VOUT2 Output accuracy Over VIN, IOUT, VOUT + 0.5V ≤ VIN ≤ 6.5V –3.0 +3.0 % Temp 0mA ≤ IOUT ≤ 200mA VOUT(NOM) + 0.5V ≤ VIN ≤ 6.5V, ΔVOUT/ ΔVIN Line regulation 130 µV/V IOUT = 5mA ΔVOUT/ ΔIOUT Load regulation 0mA ≤ IOUT ≤ 200mA 75 µV/mA Dropout voltage(2) VDO IOUT = 200mA 230 400 mV (VIN = VOUT(NOM) – 0.1V) ICL Output current limit (per output) VOUT = 0.9 × VOUT(NOM) 240 340 575 mA IOUT1 = IOUT2 = 0.1mA 90 160 µA IGND Ground pin current IOUT1 = IOUT2 = 200mA 250 µA VEN1,2 ≤ 0.4V, 2.7V ≤ VIN < 4.5V, 0.3 3.0 µA TJ = –40°C to +85°C ISHDN Shutdown current (IGND) VEN1,2 ≤ 0.4V, 4.5V ≤ VIN ≤ 6.5V, 1.8 µA TJ = –40°C to +85°C f = 100Hz 63 dB f = 1kHz 63 dB Power-supply rejection ratio PSRR VIN = 3.8V, VOUT = 2.8V, f = 10kHz 72 dB IOUT = 200mA f = 100kHz 58 dB f = 1MHz 44 dB Output noise voltage VN 70 × V OUT µV RMS BW = 100Hz to 100kHz RL = 14Ω, VOUT = 2.8V, TSTR Startup time(3) 160 µs COUT = 1.0µF Shutdown time(4),(5) RL = ∞, COUT = 1.0µF, TSHUT 180 µs (TPS719xx only) VOUT = 2.8V VIN ≤ 5.5V 1.2 6.5 V Enable high (enabled) VEN(HI) (EN1 and EN2) 5.5V < VIN ≤ 6.5V 1.25 6.5 V Enable low (shutdown) VEN(LO) 0 0.4 V (EN1 and EN2) Enable pin current, enabled IEN EN1 = EN2 = 6.5V 0.04 1.0 µA (EN1 and EN2) Undervoltage lockout VIN rising 2.38 2.45 2.52 V UVLO Hysteresis VIN falling 150 mV Shutdown, temperature increasing +160 °C TSD Thermal shutdown temperature Reset, temperature decreasing +140 °C TJ Operating junction temperature –40 +125 °C (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) Time from VEN = 1.25V to VOUT = 95% (VOUT(NOM)). (4) Time from VEN = 0.4V to VOUT = 5% (VOUT(NOM)). (5) See Shutdown section in the Applications Information for more details. Copyright © 2007–2008, Texas Instruments Incorporated 3 |
