LM1876T

Manufacturer TEXAS INSTRUMENTS
Part Number LM1876T
Differential Input Voltage 54V

KEY SPECIFICATIONS

  • THD+N at 1kHz at 2 x 15W continuous averageoutput power into 4Ω or 8Ω: 0.1% (max)
  • THD+N at 1kHz at continuous average output power of 2 x 20W into 8Ω: 0.009% (typ)
  • Standby current: 4.2mA (typ)

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.

  1. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which specify performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good indication of device performance.

  2. All voltages are measured with respect to the GND pins (5, 10), unless otherwise specified.

  3. If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and specifications.

  4. For operating at case temperatures above 25°C, the device must be derated based on a 150°C maximum junction temperature and a thermal resistance of θJC = 2°C/W (junction to case) for the NDB package and θJC = 1°C/W for the NDL package. Refer to DETERMINING THE CORRECT HEAT SINK in Application Information.

  5. Human body model, 100 pF discharged through a 1.5 kΩ resistor.

  6. The operating junction temperature maximum is 150°C, however, the instantaneous Safe Operating Area temperature is 250°C.

Operating Ratings

  1. All voltages are measured with respect to the GND pins (5, 10), unless otherwise specified.

  2. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which specify performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good indication of device performance.

  3. Operation is specified up to 64V, however, distortion may be introduced from SPiKe Protection Circuitry if proper thermal considerations are not taken into account. Refer to Application Information for a complete explanation.

Electrical Characteristics

  1. All voltages are measured with respect to the GND pins (5, 10), unless otherwise specified.

  2. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which specify performance limits. This assumes that the device is within the Operating Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good indication of device performance.

  3. Typicals are measured at 25°C and represent the parametric norm.

  4. Limits are ensure that all parts are tested in production to meet the stated values.

  5. VEE must have at least −9V at its pin with reference to ground in order for the under-voltage protection circuitry to be disabled. In addition, the voltage differential between VCC and VEE must be greater than 14V.

  6. AC Electrical Test; Refer to Test Circuit #2 (AC Electrical Test Circuit).

  7. For a 4Ω load, and with ±20V supplies, the LM1876 can deliver typically 22W of continuous average output power with less than 0.1% (THD + N). With supplies above ±20V, the LM1876 cannot deliver more than 22W into a 4Ω due to current limiting of the output transistors. Thus, increasing the power supply above ±20V will only increase the internal power dissipation, not the possible output power. Increased power dissipation will require a larger heat sink as explained in Application Information.

  8. DC Electrical Test; Refer to Test Circuit #1 (DC Electrical Test Circuit).

  9. The output dropout voltage, VOD, is the supply voltage minus the clipping voltage. Refer to Figure 16, Figure 17, and Figure 18 in Typical Performance Characteristics.

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