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线性和低压降 (LDO) 稳压器

LM2941

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具有使能功能的 1A、26V、高 PSRR、可调节低压降稳压器，-40°C°C 至 +125°C 工作温度范围

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LM2941

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产品详情

Rating Catalog Vin (max) (V) 26 Vin (min) (V) 6 Iout (max) (A) 1 Output options Adjustable Output, Fixed Output Vout (max) (V) 20 Vout (min) (V) 5 Fixed output options (V) 20 Noise (µVrms) 600 PSRR at 100 KHz (dB) 67 Iq (typ) (mA) 10 Features Enable Thermal resistance θJA (°C/W) 32, 40.6, 41 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 26 Vin (min) (V) 6 Iout (max) (A) 1 Output options Adjustable Output, Fixed Output Vout (max) (V) 20 Vout (min) (V) 5 Fixed output options (V) 20 Noise (µVrms) 600 PSRR at 100 KHz (dB) 67 Iq (typ) (mA) 10 Features Enable Thermal resistance θJA (°C/W) 32, 40.6, 41 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -40 to 125
TO-263 (KTT) 5 154.8384 mm² (10.16 mm × 15.24 mm) TO-220 (NDH) 5 86.0552 mm² (10.16 mm × 8.47 mm) WSON (NGN) 8 16 mm² (4 mm × 4 mm) TO-220 (KC) 5 45.212 mm² (10.16 mm × 4.45 mm)
  • Operating VIN Range: 6 V to 26 V
  • Output Voltage Adjustable From 5 V to 20 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Trimmed Reference Voltage
  • Reverse Battery Protection
  • Internal Short-Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • TTL, CMOS Compatible ON/OFF Switch
  • WSON Space-Saving Package
  • Operating VIN Range: 6 V to 26 V
  • Output Voltage Adjustable From 5 V to 20 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Trimmed Reference Voltage
  • Reverse Battery Protection
  • Internal Short-Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • TTL, CMOS Compatible ON/OFF Switch
  • WSON Space-Saving Package

The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 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 pin 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 LM2941 and all regulated circuitry are protected from reverse battery installations or two-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. Familiar regulator features such as short circuit and thermal overload protection are also provided.

The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 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 pin 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 LM2941 and all regulated circuitry are protected from reverse battery installations or two-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. Familiar regulator features such as short circuit and thermal overload protection are also provided.
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* 数据表 LM2941x 1-A Low Dropout Adjustable Regulator 数据表 (Rev. I) PDF | HTML 2015-1-12

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仿真模型

LM2941 PSpice Transient Model (Rev. A)

SNVM602A.ZIP (57 KB) - PSpice 模型
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仿真模型

LM2941 TINA-TI Transient Model

SNVM700.TSC (98 KB) - TINA-TI Spice 模型
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LM2941 TINA-TI Transient Reference Design

SNVM699.ZIP (10 KB) - TINA-TI 参考设计
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LM2941 Unencrypted PSpice Transient Model

SNVMAB1.ZIP (2 KB) - PSpice 模型
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封装 引脚 CAD 符号、封装和 3D 模型
TO-263 (KTT) 5 Ultra Librarian
TO-220 (NDH) 5 Ultra Librarian
WSON (NGN) 8 Ultra Librarian
TO-220 (KC) 5 Ultra Librarian
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