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TPS61160 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS61160 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 28 page TPS61160 TPS61161 www.ti.com SLVS791C – NOVEMBER 2007 – REVISED APRIL 2012 ELECTRICAL CHARACTERISTICS VIN = 3.6 V, CTRL = VIN, TA = –40°C to 85°C, typical values are at TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT VI Input voltage range, VIN 2.7 18 V IQ Operating quiescent current into VIN Device PWM switching no load 1.8 mA ISD Shutdown current CRTL=GND, VIN = 4.2 V 1 μA UVLO Undervoltage lockout threshold VIN falling 2.2 2.5 V Vhys Undervoltage lockout hysterisis 70 mV ENABLE AND REFERENCE CONTROL V(CTRLh) CTRL logic high voltage VIN = 2.7 V to 18 V 1.2 V V(CTRLl) CTRL logic low voltage VIN = 2.7 V to 18 V 0.4 V R(CTRL) CTRL pull down resistor 400 800 1600 k Ω toff CTRL pulse width to shutdown CTRL high to low 2.5 ms tes_det Easy Scale detection time(1) CTRL pin low 260 μs tes_delay EasyScale detection delay 100 μs tes_win EasyScale detection window time Measured from CTRL high 1 ms VOLTAGE AND CURRENT CONTROL VREF Voltage feedback regulation voltage 196 200 204 mV Voltage feedback regulation voltage under VFB = 50 mV 47 50 53 V(REF_PWM) mV brightness control VFB = 20 mV 17 20 23 IFB Voltage feedback input bias current VFB = 200 mV 2 μA fS Oscillator frequency 500 600 700 kHz VFB = 100 mV, measured on the drive Dmax Maximum duty cycle 93% 95% signal of the switching FET tmin_on Minimum on pulse width 40 ns Isink Comp pin sink current 100 μA Isource Comp pin source current 100 μA Gea Error amplifier transconductance 240 320 400 μmho Rea Error amplifier output resistance 6 M Ω fea Error amplifier crossover frequency 5 pF connected to COMP 500 kHz POWER SWITCH VIN = 3.6 V 0.3 0.6 RDS(on) N-channel MOSFET on-resistance Ω VIN = 3.0 V 0.7 ILN_NFET N-channel leakage current VSW = 35 V, TA = 25°C 1 μA OC and OLP ILIM N-Channel MOSFET current limit D = Dmax 0.56 0.7 0.84 A ILIM_Start Start up current limit D = Dmax 0.4 A tHalf_LIM Time step for half current limit 5 ms Vovp Measured on the SW pin, TPS61160 25 26 27 Open LED protection threshold V TPS61161 37 38 39 Measured on the FB pin, percentage V(FB_OVP) Open LED protection threshold on FB 50% of Vref, Vref = 200 mV and 20 mV tREF VREF filter time constant 180 μs tstep VREF ramp up time 213 μs (1) To select EasyScale mode, the CTRL pin has to be low for more than tes_det during tes_win Copyright © 2007–2012, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS61160 TPS61161 |
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