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LM76002 Datasheet(PDF) 6 Page - Texas Instruments |
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LM76002 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 53 page  6 LM76002, LM76003 SNVSAK0 – OCTOBER 2017 www.ti.com Product Folder Links: LM76002 LM76003 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. 6.4 Thermal Information THERMAL METRIC(1) LM76002/LM76003 UNIT RNP (WQFN) 30 PINS RθJA Junction-to-ambient thermal resistance 29 °C/W RθJC(top) Junction-to-case (top) thermal resistance 24.3 °C/W RθJB Junction-to-board thermal resistance 1.7 °C/W ψJT Junction-to-top characterization parameter 0.7 °C/W ψJB Junction-to-board characterization parameter 13.6 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 5.1 °C/W (1) Shutdown current includes leakage current of the switching transistors. 6.5 Electrical Characteristics Limits apply over the recommended operating junction temperature (TJ) range of –40°C to +125°C, unless otherwise stated. Minimum and maximum limits are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated, the following conditions apply: VIN = 24 V, VOUT = 3.3 V, fSW = 500 kHz. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (PVIN PINS) VIN Operating input voltage range 3.5 60 V ISD Shutdown quiescent current; measured at PVIN pin(1) VEN = 0 V TJ = 25℃ 1.2 10 µA IQ_NONSW Operating quiescent current from VIN (non-switching) VEN = 2 V, VFB = 1.5 V, VBIAS = 3.3 V external 0.9 12 µA ENABLE (EN PIN) VEN_VCC_H Enable input high level for VCC output VEN rising 1.2 V VEN_VCC_L Enable input low level for VCC output VEN falling 0.3 V VEN_VOUT_H Enable input high level for VOUT VEN rising 1.14 1.204 1.25 V VEN_VOUT_HYS Enable input hysteresis for VOUT VEN falling hysteresis –150 mV ILKG_EN Enable input leakage current VEN = 2 V 1.4 200 nA INTERNAL LDO (VCC PIN, BIAS PIN) VCC Internal VCC voltage PWM operation 3.29 V PFM operation 3.1 V VCC_UVLO Internal VCC undervoltage lockout VCC rising 2.96 3.14 3.27 V VCC falling hysteresis –565 mV VBIAS_ON Input changeover VBIAS rising 3.11 3.25 V VBIAS falling hysteresis –63 mV IBIAS_NONSW Operating quiescent current from external VBIAS (non- switching) VEN = 2 V, VFB = 1.5 V, VBIAS = 3.3 V external 21 50 µA VOLTAGE REFERENCE (FB PIN) VFB Feedback voltage PWM mode 0.987 1.006 1.017 V ILKG_FB Input leakage current at FB pin VFB = 1 V 0.2 60 nA HIGH SIDE DRIVER (BOOT PIN) VBOOT_UVLO BOOT - SW undervoltage lockout 1.6 2.2 2.7 V |
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