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LM138KG-MW8 Datasheet(PDF) 5 Page - Texas Instruments |
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LM138KG-MW8 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 34 page 5 LM138QML www.ti.com SNVSAA9 – OCTOBER 2017 Product Folder Links: LM138QML Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 6.3 Thermal Information THERMAL METRIC(1) LM138QML UNIT K (TO-3) 2 PINS RθJA Junction-to-ambient thermal resistance 42.8 °C/W RθJC(top) Junction-to-case (top) thermal resistance 3.3 °C/W ψJT Junction-to-top characterization parameter 2.5 °C/W ψJB Junction-to-board characterization parameter 37.4 °C/W (1) These specifications are applicable for power dissipations up to 50W. Power dissipation is specified at these values up to 15-V input- output differential. Above 15-V differential, power dissipation will be limited by internal protection circuitry. All limits (that is, the numbers in the minimum and maximum columns) are specified to TI's AOQL (Average Outgoing Quality Level). (2) Typical figures are at TA = 25°C, and represent most likely parametric norms. Test limits are ensured to Texas Instruments' average outgoing quality level (AOQL). (3) VIN – VOUT = 3.3 V at –55°C and 125°C. (4) Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specifications for thermal regulation. (5) Datalog reading in mV, 0.01% = 1.19 mV. (6) Family board not required for this device. 6.4 Electrical Characteristics Values apply for VIN – VOUT = 5 V; and IOUT = 10 mA (unless otherwise noted) (1) PARAMETER TEST CONDITIONS SUB- GROUPS MIN TYP(2) MAX UNIT VREF Reference voltage VIN – VOUT = 3 V (3) [1, 2, 3] 1.19 1.29 V VIN – VOUT = 3 V, IOUT = 5 A [1, 2, 3] 1.19 1.29 VIN – VOUT = 5 V, IOUT = 7 A [1, 2, 3] 1.19 1.29 VIN – VOUT = 35 V [1, 2, 3] 1.19 1.29 VIN – VOUT = 35 V, IOUT = 150 mA [1, 2, 3] 1.19 1.29 VRLINE Line regulation(4) 3 V ≤ (VIN – VOUT) ≤ 35 V [1] –3.5 3.5 mV 3.3 V ≤ (VIN – VOUT) ≤ 35 V [2, 3] –14 14 VRLOAD Load regulation(4) VIN – VOUT = 3 V, 10 mA ≤ IOUT ≤ 5 A, VOUT = VREF [1] –3.8 3.8 mV VIN – VOUT = 3.3 V, 10 mA ≤ IOUT ≤ 5 A, VOUT = VREF [2, 3] –8 8 VIN – VOUT = 35 V, 10 mA ≤ IOUT ≤ 150 mA, VOUT = VREF [1] –3.8 3.8 [2, 3] –8 8 VRTH Thermal regulation VIN – VOUT = 10 V, pulse = 20 ms, IOUT = 1 A (5) [1] 0.002 0.01 %/W IADJ Adjustment pin current VIN – VOUT = 3 V (3) [1, 2, 3] 2 45 100 μA VIN – VOUT = 35 V [1, 2, 3] 2 100 ΔIADJ Adjustment pin current change 3 V ≤ (VIN – VOUT) ≤ 35 V (3) [1, 2, 3] –5 0.2 5 μA 10 mA ≤ IOUT ≤ 5 A [1, 2, 3] –5 5 ILOAD(MIN) Minimum load current VIN – VOUT = 3 V, VOUT = 1.4 V (3) [1, 2, 3] 0.5 5 mA VIN – VOUT = 35 V, VOUT = 1.4 V [1, 2, 3] 0.5 3.5 5 ICL Current limit VIN – VOUT = 10 V, T = 0.5 ms, VOUT = 0 V [1, 2, 3] 7 16 A T = 5 ms, VOUT = 0 V [1, 2, 3] 5 15 ΔVR/ΔVIN Ripple rejection ratio VOUT = VREF, eIN = 1 VRMS, f = 120 Hz, IOUT = 500 mA (6) [4] 60 dB |
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