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TPS62740 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS62740 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 32 page  TPS62740, TPS62742 www.ti.com SLVSB02B – NOVEMBER 2013 – REVISED JULY 2014 8.3 Recommended Operating Conditions MIN NOM MAX UNIT VIN Supply voltage VIN (1) 2.2 5.5 V VOUTnom + 0.7V ≤ VIN ≤ 5.5V TPS62740 300 IOUT + Device output current (sum of IOUT and I LOAD) 3V ≤ VIN, VOUTnom + 0.7V ≤ VIN ≤ 5.5V TPS62742 400 I LOAD mA VOUTnom ≤ VIN ≤ VOUTnom +0.7V 100 ILOAD Load current (current from LOAD pin) 100 L Inductance 1.5 2.2 3.3 µH COUT Output capacitance connected to VOUT pin (not including LOAD pin) 22 µF CLOAD Capacitance connected to LOAD pin 10 TJ Operating junction temperature range -40 125 °C TA Ambient temperature range -40 85 (1) The minimum required supply voltage for startup is 2.15V (undervoltage lockout threshold VTH_UVLO+) . The device is functional down to 2V supply voltage (falling undervoltage lockout threshold VTH_UVLO-). 8.4 Thermal Information THERMAL METRIC DSS / 12 PINS UNIT RθJA Junction-to-ambient thermal resistance 61.8 RθJCtop Junction-to-case (top) thermal resistance 70.9 RθJB Junction-to-board thermal resistance 25.7 °C/W ψJT Junction-to-top characterization parameter 1.9 ψJB Junction-to-board characterization parameter 25.7 RθJCbot Junction-to-case (bottom) thermal resistance 7.2 8.5 Electrical Characteristics 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 SUPPLY VIN Input voltage 2.2 5.5 V range EN = VIN, CTRL = GND, IOUT = 0µA, VOUT = 1.8V, device not switching, 360 1800 nA Operating IQ EN = VIN, IOUT = 0mA, CTRL = GND, VOUT = 1.8V , device switching 460 quiescent current EN = VIN, IOUT = 0mA., CTRL = VIN, VOUT = 1.8V, device not switching 12.5 µA ISD Shutdown current EN = GND, shutdown current into VIN 70 1000 nA EN = GND, shutdown current into VIN, TA = 60°C 150 450 VTH_UVLO+ Undervoltage Rising VIN 2.075 2.15 V lockout threshold VTH_UVLO- Falling VIN 1.925 2 INPUTS EN, CTRL, VSEL 1-4 VIH TH High level input 2.2V ≤ VIN ≤ 5.5V 1.1 V threshold VIL TH Low level input 2.2V ≤ VIN ≤ 5.5V 0.4 V threshold IIN Input bias Current TA = 25°C 10 nA TA = –40°C to 85°C 25 POWER SWITCHES High side MOSFET on- 0.6 0.85 resistance RDS(ON) VIN = 3.6V, IOUT = 50mA Ω Low Side MOSFET on- 0.36 0.5 resistance Copyright © 2013–2014, Texas Instruments Incorporated Submit Documentation Feedback 5 |
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