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LP87702 Datasheet(PDF) 10 Page - Texas Instruments |
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LP87702 Datasheet(HTML) 10 Page - Texas Instruments |
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10 / 98 page  Limits apply over the junction temperature range –40°C ≤ TJ ≤ 140°C, specified VVANA, VVIN_Bx, VVOUT_Bx, VVOUT_BST, and IOUT range, unless otherwise noted. Typical values are at TA = 25°C, VVANA = VVIN_Bx = 3.3 V, VOUT_BST = 5 V and VOUT_Bx = 1 V, unless otherwise noted. (1) (2) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Thermal shutdown Temperature rising 140 150 160 °C Hysteresis 20 VANAOVP VANA Overvoltage Voltage rising, VANA_OVP_SEL = 0 5.6 5.8 6.1 V Voltage falling, VANA_OVP_SEL = 0 5.45 5.73 5.96 Voltage rising, VANA_OVP_SEL = 1 4.1 4.3 4.6 Voltage falling, VANA_OVP_SEL = 1 3.95 4.23 4.46 Hysteresis 40 200 mV VANAUVL O VANA Undervoltage Lockout Voltage rising 2.51 2.63 2.75 V Voltage falling 2.5 2.6 2.7 BUCKx short circuit detection Threshold 0.32 0.35 0.45 V Bypass short circuit current limit 270 420 mA LOAD CURRENT MEASUREMENT FOR BUCK CONVERTERS Current measurement range Current corresponding to maximum output code (note: maximum current for LP87702 buck is 3.5A) 10.22 A Resolution LSB 20 mA Measurement accuracy IOUT > 1A <10% Measurement time Auto mode (automatically changing to PWM mode for the measurement) 50 µs PWM mode 25 CURRENT CONSUMPTION Shutdown current consumption NRST = 0 1 µA Standby current consumption, converters disabled NRST = 1 9 µA Active current consumption, one buck converter enabled in Auto mode, internal RC oscillator IOUT_Bx = 0 mA, not switching 55 µA Active current consumption, two buck converters enabled in Auto mode, internal RC oscillator IOUT_Bx = 0 mA, not switching 90 µA Active current consumption during PWM operation, one buck converter enabled IOUT_Bx = 0 mA 15 mA Active current consumption during PWM operation, two buck converters enabled IOUT_Bx = 0 mA 27 mA Active current consumption, Boost converter in PWM operation IOUT_BST = 0 mA, fSW = 4 MHz 18 mA PLL and clock detector current consumption Additional current consumption when enabled, 2 MHz external clock 2 mA LP87702 SNVSBU3 – MARCH 2021 www.ti.com 10 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: LP87702 |
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