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LM43603QPWPTQ1 bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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LM43603QPWPTQ1 bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 50 page LM43603-Q1 www.ti.com SNVSA82A – APRIL 2015 – REVISED MAY 2015 7.4 Thermal Information PWP (HTSSOP) THERMAL METRIC (1)(2) UNIT (16 PINS) RθJA Junction-to-ambient thermal resistance 38.9(3) RθJC (Top) Junction-to-case (top) thermal resistance 24.3 RθJB Junction-to-board thermal resistance 19.9 °C/W ψJT Junction-to-top characterization parameter 0.7 ψJB Junction-to-board characterization parameter 19.7 RθJC(bot) Junction-to-case (bottom) thermal resistance 1.7 (1) The package thermal impedance is calculated in accordance with JESD 51-7; (2) Thermal resistances were simulated on a 4 layer, JEDEC board. (3) See Figure 98 for RθJA vs Copper Area Curve 7.5 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 = 12 V, VOUT = 3.3 V, FS = 500 kHz. PARAMETER CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN PIN) VIN-MIN-ST Minimum input voltage for start-up 3.8 V ISHDN Shutdown quiescent current VEN = 0 V 1.2 3.1 µA VEN = 3.3 V Operating quiescent current (non- IQ-NONSW VFB = 1.5 V 5 10 µA switching) from VIN VBIAS = 3.4 V external VEN = 3.3 V Operating quiescent current (non- IBIAS-NONSW VFB = 1.5 V 85 130 µA switching) from external VBIAS VBIAS = 3.4 V external VEN = 3.3 V IOUT = 0 A Operating quiescent current IQ-SW RT = open 27 µA (switching) VBIAS = VOUT = 3.3 V RFBT = 1 Meg ENABLE (EN PIN) Voltage level to enable the internal VEN-VCC-H VENABLE high level 1.2 V LDO output VCC Voltage level to disable the internal VEN-VCC-L VENABLE low level 0.525 V LDO output VCC Precision enable level for switching VEN-VOUT-H VENABLE high level 2.00 2.20 2.42 V and regulator output: VOUT Hysteresis voltage between VOUT VEN-VOUT-HYS precision enable and disable VENABLE hysteresis –290 mV thresholds ILKG-EN Enable input leakage current VEN = 3.3 V 0.8 1.75 µA INTERNAL LDO (VCC and BIAS PINS) VCC Internal LDO output voltage VCC VIN ≥ 3.8 V 3.28 V VCC rising threshold 3.1 V Undervoltage lockout (UVLO) VCC-UVLO Hysteresis voltage between rising thresholds for VCC –520 mV and falling thresholds VBIAS rising threshold 2.94 3.15 V Internal LDO input change over VBIAS-ON Hysteresis voltage between rising threshold to BIAS -75 mV and falling thresholds Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM43603-Q1 |
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