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LM2940C

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1A、26V、高 PSRR、低压降稳压器

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LM2940C

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产品详情

Rating Catalog Vin (max) (V) 26 Vin (min) (V) 6 Iout (max) (A) 1 Output options Fixed Output Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 9, 12, 15 Noise (µVrms) 150 PSRR at 100 KHz (dB) 54 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 23, 41 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) 0 to 125
Rating Catalog Vin (max) (V) 26 Vin (min) (V) 6 Iout (max) (A) 1 Output options Fixed Output Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 9, 12, 15 Noise (µVrms) 150 PSRR at 100 KHz (dB) 54 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 23, 41 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) 0 to 125
TO-220 (NDE) 3 46.5328 mm² (10.16 mm × 4.58 mm) TO-263 (KTT) 3 154.8384 mm² (10.16 mm × 15.24 mm) TO-220 (NDG) 3 193.548 mm² (10.16 mm × 19.05 mm)
  • Input Voltage Range = 6 V to 26 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • Input Voltage Range = 6 V to 26 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested

The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

The LM2940-N and LM2940C positive voltage regulators feature the ability to source 1 A of output current with a dropout voltage of typically 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2940-N and LM2940C and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940-N and LM2940C cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.
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* 数据表 LM2940x 1-A Low Dropout Regulator 数据表 (Rev. J) PDF | HTML 2014-12-22

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TIDA-01414 — TPA3244 Dolby Atmos 条形音箱参考设计

TPA3244 Dolby Atmos® 条形音箱参考设计结合了超高清音频和高动态范围，可通过外形小巧的系统打造充满整个房间的音频体验。该设计利用 TI 的高性能 TPA3244 放大器、带处理功能的 PCM5252 高性能 DAC 以及用于解码和渲染 Dolby Atmos® 的集成 SoC。条形音箱参考板使用 TI 用于独立通道处理的集成音频 DSP 来提供 10DAC +放大器通道，该 DSP 包含数字有源分频器、DRC 和双二阶滤波器以支持 5.1.2 条形音箱输出配置。该设计使用 66AK2G 音频 SoC 进行 Dolby Atmos® 解码和渲染。
支持的产品和硬件
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TO-220 (NDE) 3 Ultra Librarian
TO-263 (KTT) 3 Ultra Librarian
TO-220 (NDG) 3 Ultra Librarian
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