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LM25141RGER bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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LM25141RGER bảng dữ liệu(HTML) 6 Page - Texas Instruments |
6 / 50 page 6 LM25141 SNVSAU1 – MARCH 2017 www.ti.com Product Folder Links: LM25141 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) All minimum and maximum limits are specified by correlating the electrical characteristics to process and temperature variations and applying statistical process control. (2) The junction temperature (TJ in ºC) is calculated from the ambient temperature (TA in ºC) and power dissipation (PD in Watts) as follows: TJ = TA + (PD × RθJA) where RθJA (in °C/W) is the package thermal impedance provided in the Thermal Information section. 6.5 Electrical Characteristics TJ = –40°C to +125°C, Typical values TJ = 25°C, VIN = 12 V, VCCX = 5 V, VOUT = 5 V, EN = 5 V, OSC = VDD, FSW = 2.2 MHz, no-load on the Drive Outputs (HO, HOL, LO, and LOL outputs), over operating free-air temperature range (unless otherwise noted) (1) (2) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN SUPPLY VOLTAGE ISHUTDOWN Shutdown mode current VIN = 8–18 V, EN = 0 V, VCCX = 0 V 10 12.5 µA ISTANDBY Standby current EN = 5 V, FB = VDD, VOUT in regulation, no-load, not switching, DEMB = GND. 35 45 µA EN = 5 V, FB = 0 V, VOUT in regulation, no-load, not switching, VCCX = 5 V, DEMB = GND. 42 55 VCC REGULATOR VCC(REG) VCC regulation voltage VIN = 6–18 V, 0–75 mA, VCCX = 0 V 4.75 5 5.25 V VCC(UVLO) VCC under voltage threshold VCC rising, VCCX = 0 V 3.25 3.4 3.55 V VCC(HYST) VCC hysteresis voltage VCCX = 0 V 175 mV ICC(LIM) VCC sourcing current limit VCCX = 0 V 85 125 mA VDDA VDDA(REG) Internal bias supply power VCCX = 0 V 4.75 5 5.25 V VDDA(UVLO) VCC rising, VCCX = 0 V 3.1 3.2 3.3 V VDDA(HYST) VCCX = 0 V 125 mV RVDDA VCCX = 0 V 55 Ω VCCX VCCX(ON) VCC rising 4.1 4.3 4.4 V VCCX(HYST) 80 mV R(VCCX) VCCX = 5 V 2 Ω OSCILLATOR SELECT THRESHOLDS Oscillator select threshold 2.2 MHz (OSC pin) 2.0 V Oscillator select threshold 440 kHz (OSC pin) 0.8 V CURENT LIMIT V(CS) Current limit threshold ILSET = VDDA, measure from CS to VOUT 68 75 82 mV tdly Current sense delay to output 40 ns Current sense amplifier gain 11.4 12 12.6 V/V ICS(BIAS) Amplifier input bias 10 nA RES I(RES) RES current source 20 µA V(RES) RES threshold 1.2 V Timer Timer hiccup mode fault 512 cycles RDS(ON) RES pull-down 4 Ω OUTPUT VOLTAGE REGULATION 3.3 V VIN = 3.8–42 V 3.273 3.3 3.327 V 5 V VIN = 5.5–42 V 4.96 5.0 5.04 V FEEDBACK VOUT select threshold 3.3 V VDD - 0.3 V Regulated feedback voltage 1.193 1.2 1.207 V FB(LOWRES) Resistance to ground on FB for FB = 0 detection 500 Ω |
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