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LM338T 数据表(PDF) 2 Page - Texas Instruments |
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LM338T 数据表(HTML) 2 Page - Texas Instruments |
2 / 23 page LM138, LM338 SNVS771B – MAY 1998 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings (1) (2) (3) Power Dissipation Internally limited Input/Output Voltage Differential +40V, −0.3V Storage Temperature −65°C to +150°C Lead Temperature TO-3 Package (Soldering, 10 seconds) 300°C TO-220 Package (Soldering, 4 seconds) 260°C ESD Tolerance TBD (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test conditions, see the Electrical Characteristics. (2) Refer to RETS138K drawing for military specifications of LM138K. (3) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications. Operating Temperature Range LM138 −55°C ≤ TJ ≤ +150°C LM338 0°C ≤ TJ ≤ +125°C Electrical Characteristics Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN − VOUT = 5V; and IOUT = 10 mA. (1) LM138 Symbol Parameter Conditions Units Min Typ Max VREF Reference Voltage 3V ≤ (VIN − VOUT) ≤ 35V, 1.19 1.24 1.29 V 10 mA ≤ IOUT ≤ 5A, P ≤ 50W VRLINE Line Regulation 3V ≤ (VIN − VOUT) ≤ 35V (2) 0.005 0.01 %/V 0.02 0.04 %/V VRLOAD Load Regulation 10 mA ≤ IOUT ≤ 5A (2) 0.1 0.3 % 0.3 0.6 % Thermal Regulation 20 ms Pulse 0.002 0.01 %/W IADJ Adjustment Pin Current 45 100 μA ΔIADJ Adjustment Pin Current Change 10 mA ≤ IOUT ≤ 5A, 0.2 5 μA 3V ≤ (VIN − VOUT) ≤ 35V ΔVR/T Temperature Stability TMIN ≤ TJ ≤ TMAX 1 % ILOAD(Min) Minimum Load Current VIN − VOUT = 35V 3.5 5 mA ICL Current Limit VIN − VOUT ≤ 10V DC 5 8 A 0.5 ms Peak 7 12 A VIN − VOUT = 30V 1 1 A VN RMS Output Noise, % of VOUT 10 Hz ≤ f ≤ 10 kHz 0.003 % ΔVR/ΔVIN Ripple Rejection Ratio VOUT = 10V, f = 120 Hz, CADJ = 0 μF 60 dB VOUT = 10V, f = 120 Hz, CADJ = 10 μF 60 75 dB Long-Term Stability TJ = 125°C, 1000 Hrs 0.3 1 % θJC Thermal Resistance, NDS Package 1 °C/W Junction to Case (1) These specifications are applicable for power dissipations up to 50W for the TO-3 (NDS) package and 25W for the TO-220 (NDE) package. Power dissipation is specified at these values up to 15V input-output differential. Above 15V differential, power dissipation will be limited by internal protection circuitry. All limits (i.e., the numbers in the Min. and Max. columns) are specified to TI's AOQL (Average Outgoing Quality Level). (2) 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. 2 Submit Documentation Feedback Copyright © 1998–2013, Texas Instruments Incorporated Product Folder Links: LM138 LM338 |
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类似说明 - LM338T |
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