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TPS62748YFPT Datasheet(PDF) 6 Page - Texas Instruments |
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TPS62748YFPT Datasheet(HTML) 6 Page - Texas Instruments |
6 / 22 page TPS62748 SLVSD37A – SEPTEMBER 2015 – REVISED OCTOBER 2015 www.ti.com Electrical Characteristics (continued) VIN = 3.6V, TJ = –40°C to 125°C typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT AUTO 100% MODE TRANSITION Auto 100% Mode VTH_100+ leave detection Rising VIN,100% Mode is left with VIN = VOUT + VTH_100+ 150 250 350 threshold (1) mV Auto 100% Mode VTH_100- enter detection Falling VIN, 100% Mode is entered with VIN = VOUT + VTH_100- 85 200 290 threshold (1) OUTPUT High side softstart 80 150 200 switch current limit ILIM_softstart EN=low to high mA Low side softstart 150 switch current limit Output voltage Output voltages are selected with pins VSEL 1.2 1.8 range V IOUT = 10mA, VOUT = 1.8V -2.5 0% 2.5 Output voltage accuracy IOUT = 100mA, VOUT = 1.8V –2 0% 2 VOUT DC output voltage VOUT = 1.8V 0.001 %/mA load regulation DC output voltage VOUT = 1.8V, IOUT = 100mA, 2.2V ≤ VIN ≤ 5.0V 0 %/V line regulation (1) VIN is compared to the programmed output voltage (VOUT). When VIN–VOUT falls below VTH_100- the device enters 100% Mode by turning the high side MOSFET on. The 100% Mode is exited when VIN–VOUT exceeds VTH_100+ and the device starts switching. The hysteresis for the 100% Mode detection threshold VTH_100+ - VTH_100- will always be positive and will be approximately 50 mV(typ) 8.6 Timing Requirements VIN = 3.6V, TJ = –40°C to 125°C typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LOAD Switch trise_LOAD VLOAD rise time CTRL= low to high, VOUT = 1.8V, 2.2V ≤ VIN ≤ 5.5V, ILOAD = 20mA 315 800 μs OUTPUT tONmin Minimum ON time VOUT = 2.0V, IOUT = 0 mA 225 ns tOFFmin Minimum OFF time VIN = 2.3V 50 ns Regulator start up tStartup_delay From transition EN = low to high until device starts switching 10 25 ms delay time tSoftstart Softstart time 2.2V ≤ VIN ≤ 5.5V, EN = VIN 700 1200 µs 6 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: TPS62748 |
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