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TPS627431YFPR Datasheet(PDF) 6 Page - Texas Instruments |
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TPS627431YFPR Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 25 page  6 TPS62743, TPS627431 SLVSCQ0A – JUNE 2015 – REVISED MAY 2016 www.ti.com Product Folder Links: TPS62743 TPS627431 Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated Electrical Characteristics (continued) VIN = 3.6V, TA = –40°C to 85°C typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT (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) AUTO 100% MODE TRANSITION VTH_100+ Auto 100% Mode leave detection threshold (1) Rising VIN,100% Mode is left with VIN = VOUT + VTH_100+ 150 250 350 mV VTH_100- Auto 100% Mode enter detection threshold (1) Falling VIN, 100% Mode is entered with VIN = VOUT + VTH_100- 85 200 290 OUTPUT ILIM_softstart High side softstart switch current limit EN=low to high 80 150 200 mA Low side softstart switch current limit 150 VOUT Output voltage range Output voltages are selected with pins VSEL 1 - 3 1.2 3.3 V Output voltage accuracy IOUT = 10mA, VOUT = 1.8V -2.5 0% 2.5 IOUT = 100mA, VOUT = 1.8V –2 0% 2 DC output voltage load regulation VOUT = 1.8V 0.001 %/mA DC output voltage line regulation VOUT = 1.8V, IOUT = 100mA, 2.2V ≤ VIN ≤ 5.0V 0 %/V 8.6 Timing Requirements VIN = 3.6V, TJ = –40°C to 85°C typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT OUTPUT tONmin Minimum ON time VOUT = 2.0V, IOUT = 0 mA 225 ns tOFFmin Minimum OFF time VIN = 2.3V 50 ns tStartup_delay Regulator start up delay time From transition EN = low to high until device starts switching 10 25 ms tSoftstart Softstart time 2.2V ≤ VIN ≤ 5.5V, EN = VIN 700 1200 µs |
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