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TPS62172DSG Datasheet(PDF) 3 Page - Texas Instruments |
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TPS62172DSG Datasheet(HTML) 3 Page - Texas Instruments |
3 / 33 page TPS62170, TPS62171 TPS62172, TPS62173 www.ti.com SLVSAT8A – NOVEMBER 2011 – REVISED APRIL 2012 ELECTRICAL CHARACTERISTICS over free-air temperature range (TA=-40°C to +85°C), typical values at VIN=12V and TA=25°C (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VIN Input Voltage Range(1) 3 17 V IQ Operating Quiescent Current EN=High, IOUT=0mA, device not switching 17 25 µA ISD Shutdown Current(2) EN=Low 1.5 4 µA Falling Input Voltage 2.6 2.7 2.82 V VUVLO Undervoltage Lockout Threshold Hysteresis 180 mV TSD Thermal Shutdown Temperature 160 °C Thermal Shutdown Hysteresis 20 CONTROL (EN, PG) VEN_H High Level Input Threshold Voltage (EN) 0.9 V VEN_L Low Level Input Threshold Voltage (EN) 0.3 V ILKG_EN Input Leakage Current (EN) EN=VIN or GND 0.01 1 µA Rising (%VOUT) 92 95 98 VTH_PG Power Good Threshold Voltage % Falling (%VOUT) 87 90 93 VOL_PG Power Good Output Low IPG=-2mA 0.07 0.3 V ILKG_PG Input Leakage Current (PG) VPG=1.8V 1 400 nA POWER SWITCH VIN≥6V 300 600 High-Side MOSFET ON-Resistance m Ω VIN=3V 430 RDS(ON) VIN≥6V 120 200 Low-Side MOSFET ON-Resistance m Ω VIN=3V 165 ILIMF High-Side MOSFET Forward Current Limit(3) VIN=12V, TA=25°C 0.85 1.05 1.35 A OUTPUT VREF Internal Reference Voltage(4) 0.8 V ILKG_FB Pin Leakage Current (FB) TPS62170, VFB=1.2V 5 400 nA Output Voltage Range (TPS62170) VIN ≥ VOUT 0.9 6.0 V PWM mode operation, VIN≥VOUT+1V –3 3 Initial Output Voltage Accuracy(5) % Power Save Mode operation, COUT=22µF -3.5 4 VOUT DC Output Voltage Load Regulation(6) VIN=12V, VOUT=3.3V, PWM mode operation 0.05 % / A DC Output Voltage Line Regulation (6) 3V ≤ VIN ≤ 17V, VOUT=3.3V, IOUT= 0.5A, PWM 0.02 % / V mode operation (1) The device is still functional down to Under Voltage Lockout (see parameter VUVLO). (2) Current into VIN pin. (3) This is the static current limit. It can be temporarily higher in applications due to internal propagation delay (see Current Limit And Short Circuit Protection). (4) This is the voltage regulated at the FB pin. (5) This is the accuracy provided by the device itself (line and load regulation effects are not included). For fixed voltage versions, the (internal) resistive feedback divider is included. (6) Line and load regulation are depending on external component selection and layout (see Figure 13 and Figure 14). Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS62170 TPS62171 TPS62172 TPS62173 |
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