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TPS61281AYFFT Datasheet(PDF) 8 Page - Texas Instruments |
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TPS61281AYFFT Datasheet(HTML) 8 Page - Texas Instruments |
8 / 54 page TPS61280A, TPS61281A, TPS61282A SLVSCG9A – MAY 2014 – REVISED SEPTEMBER 2014 www.ti.com Electrical Characteristics (continued) Minimum and maximum values are at VIN = 2.3V to 4.85V, VOUT = 3.4V (or VIN, whichever is higher), EN = 1.8V, VSEL = 1.8V, nBYP = 1.8V, –40°C ≤ TJ ≤ 125°C; Circuit of Parameter Measurement Information section (unless otherwise noted). Typical values are at VIN = 3.2V, VOUT = 3.4V, EN = 1.8V, TJ = 25°C (unless otherwise noted). PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Power-save mode PFM operation, IOUT = 1mA 30 mVpk output ripple voltage ΔVOUT TPS6128xA PWM mode output ripple voltage PWM operation, IOUT = 500mA 15 mVpk POWER SWITCH Low-side switch MOSFET VIN = 3.2, VOUT = 3.5V 45 80 m Ω on resistance High-side rectifier MOSFET rDS(on) TPS6128xA VIN = 3.2V, VOUT = 3.5V 40 70 m Ω on resistance High-side pass-through MOSFET VIN = 3.2V 35 60 m Ω on resistance EN = AGND, VIN = VOUT = SW = 3.5V Reverse leakage current into SW 0.1 2 µA –40°C ≤ TJ ≤ 85°C Ilkg TPS6128xA EN = BYP = VIN, VIN = 2.9V, VOUT = 4.4V, VSW = 0V Reverse leakage current into device not switching 0.11 2 µA VOUT –40°C ≤ TJ ≤ 85°C ISINK VOUT sink capability TPS6128xA EN = AGND, VOUT ≤ 3.6V,IOUT = -10mA 0.3 V TPS61280A VIN = 2.9V, VOUT = 3.5V, –40°C ≤ TJ ≤ 125°C, auto Valley inductor current limit 2475 3000 3525 mA TPS61281A PFM/PWM VIN = 2.9V, VOUT = 3.5V, –40°C ≤ TJ ≤ 125°C, auto Valley inductor current limit TPS61282A 3300 4000 4700 mA PFM/PWM EN = BYP = GND, VIN = 3.2V 5000 mA Pass through mode current limit TPS6128xA EN = VIN, BYP = don't care , VIN = 3.2V 5600 7400 9100 mA Pre-charge mode current limit 500 650 mA (linear mode, phase 1) TPS6128xA VIN - VOUT >= 300mV Pre-charge mode current limit 2000 mA (linear mode, phase 2) OSCILLATOR fOSC Oscillator frequency TPS6128xA VIN = 2.7V, VOUT = 3.5 2.3 MHz THERMAL SHUTDOWN, HOT DIE DETECTOR Thermal shutdown(1) TPS6128xA 140 160 °C Hot die detector accuracy(1) TPS61280A -10 105 +10 °C TIMING VIN = 3.2V, VOUT_TH = 01011 (3.4V), RLOAD = 50Ω Start-up time TPS6128xA 500 µs Time from active VIN to VOUT settled GPIO rise time(1) TPS61280A 200 ns (1) Specified by characterization. Not tested in production. 8 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: TPS61280A TPS61281A TPS61282A |
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