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TPS62236DRYT Datasheet(PDF) 4 Page - Texas Instruments |
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TPS62236DRYT Datasheet(HTML) 4 Page - Texas Instruments |
4 / 31 page TPS62230, TPS62231, TPS62232, TPS62233 TPS62234, TPS62235, TPS62236, TPS62237 TPS62238, TPS62239, TPS622310, TPS622311 SLVS941B – APRIL 2009 – REVISED DECEMBER 2009 www.ti.com ELECTRICAL CHARACTERISTICS VIN = 3.6V, VOUT = 1.8V, EN = VIN, MODE = GND, TA = –40°C to 85°C (1) typical values are at T A = 25°C (unless otherwise noted), CIN = 2.2μF, L = 2.2μH, COUT = 4.7μF, see parameter measurement information PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VIN Input voltage range (2) 2.05 6 V IOUT = 0mA. PFM mode enabled (Mode = 0) 22 40 μA device not switching IOUT = 0mA. PFM mode enabled (Mode = 0) 25 μA IQ Operating quiescent current device switching, VIN = 3.6V, VOUT = 1.2V IOUT = 0 mA. Switching with no load (MODE/DATA = VIN), PWM operation, 3 mA VOUT = 1.8V, L = 2.2μH ISD Shutdown current EN = GND(3) 0.1 1 μA Falling 1.8 1.9 V UVLO Undervoltage lockout threshold Rising 1.9 2.05 V ENABLE, MODE THRESHOLD VIH TH Threshold for detecting high EN, MODE 2.05 V ≤ VIN ≤ 6V , rising edge 0.8 1 V VIL TH HYS Threshold for detecting low EN, MODE 2.05 V ≤ VIN ≤ 6V , falling edge 0.4 0.6 V IIN Input bias Current, EN, MODE EN, MODE = GND or VIN = 3.6V 0.01 0.5 μA POWER SWITCH High side MOSFET on-resistance 600 850 RDS(ON) VIN = 3.6V, TJmax = 85°C; RDS(ON) max value m Ω Low Side MOSFET on-resistance 350 480 Forward current limit MOSFET 690 850 1050 mA high-side ILIMF VIN = 3.6V, open loop Forward current limit MOSFET low side 550 840 1220 mA TSD Thermal shutdown Increasing junction temperature 150 °C Thermal shutdown hysteresis Decreasing junction temperature 20 °C CONTROLLER tONmin Minimum ON time VIN 3.6V, VOUT = 1.8V, Mode = high, IOUT = 0 mA 135 ns tOFFmin Minimum OFF time 40 ns OUTPUT VREF Internal Reference Voltage 0.70 V VIN = 3.6V, Mode = GND, device operating in PFM 0% Mode, IOUT = 0mA Output voltage accuracy(4) VIN = 3.6V, MODE = VIN, TA = 25°C –2.0% 2.0% VOUT IOUT = 0 mA TA = –40°C to 85°C –2.5% 2.5% DC output voltage load regulation PWM operation, Mode = VIN = 3.6V, VOUT = 1.8 V 0.001 %/mA DC output voltage line regulation IOUT = 0 mA, Mode = VIN, 2.05V ≤ VIN ≤ 6V 0 %/V Time from active EN to VOUT = 1.8V, VIN = 3.6V, tStart Start-up Time 100 μs 10 Ω load ILK_SW Leakage current into SW pin VIN = VOUT = VSW = 3.6 V, EN = GND (5) 0.1 0.5 μA (1) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be derated. Maximum ambient temperature (TA(max)) is dependent on the maximum operating junction temperature (TJ(max)), the maximum power dissipation of the device in the application (PD(max)), and the junction-to-ambient thermal resistance of the part/package in the application ( θJA), as given by the following equation: TA(max) = TJ(max) – (θJA × PD(max)). (2) The minimum required supply voltage for startup is 2.05V. The part is functional down to the falling UVL (Under Voltage Lockout) threshold (3) Shutdown current into VIN pin, includes internal leakage (4) VIN = VO + 1.0 V (5) The internal resistor divider network is disconnected from FB pin. 4 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TPS62230 TPS62231 TPS62232 TPS62233 TPS62234 TPS62235 TPS62236 TPS62237 TPS62238 TPS62239 TPS622310 TPS622311 |
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