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線性與低壓差 (LDO) 穩壓器

TPS7B81

現行

具啟用功能的 150-mA、無電池 (40-V)、超低 IQ、低壓差 (LDO) 電壓穩壓器

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產品規格表

TPS7B81

現行
產品規格表 立即訂購

產品詳細資料

Output options Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Rating Catalog Noise (µVrms) 450 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.0027 Thermal resistance θJA (°C/W) 63.9, 72.8 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 270 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.15 Vin (max) (V) 40 Vin (min) (V) 3 Vout (max) (V) 5 Vout (min) (V) 3.3 Fixed output options (V) 3.3, 5 Rating Catalog Noise (µVrms) 450 PSRR at 100 KHz (dB) 60 Iq (typ) (mA) 0.0027 Thermal resistance θJA (°C/W) 63.9, 72.8 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 1.5 Dropout voltage (Vdo) (typ) (mV) 270 Operating temperature range (°C) -40 to 125
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 WSON (DRV) 6 4 mm² 2 x 2
  • Wide input voltage range: 3 V to 40 V
  • Output current: 150 mA
  • Ultra-low quiescent current (IQ):
    • 2.7 µA typical at light loads
    • 4.5 µA maximum at light loads
  • Accuracy: 1.5% over line, load, and temperature
  • Typical dropout voltage: 180 mV at 100 mA
  • Wide enable voltage range: 2 V to VIN (40 V max)
  • Input voltage transient tolerance: 45 V
  • Fixed 5-V and 3.3-V output options
  • Current limit and thermal shutdown protection
  • Stable with a wide range of capacitors (1 µF to 200 µF)(1)
  • Junction temperature range: –40°C to +150°C
  • High thermal performance packages:
    • DGN (8-pin HVSSOP), RθJA = 63.9°C/W
    • DRV (6-pin WSON), RθJA = 72.8°C/W

    (1)

(1)See the output capacitor requirements in the Recomended Operation Conditions table
  • Wide input voltage range: 3 V to 40 V
  • Output current: 150 mA
  • Ultra-low quiescent current (IQ):
    • 2.7 µA typical at light loads
    • 4.5 µA maximum at light loads
  • Accuracy: 1.5% over line, load, and temperature
  • Typical dropout voltage: 180 mV at 100 mA
  • Wide enable voltage range: 2 V to VIN (40 V max)
  • Input voltage transient tolerance: 45 V
  • Fixed 5-V and 3.3-V output options
  • Current limit and thermal shutdown protection
  • Stable with a wide range of capacitors (1 µF to 200 µF)(1)
  • Junction temperature range: –40°C to +150°C
  • High thermal performance packages:
    • DGN (8-pin HVSSOP), RθJA = 63.9°C/W
    • DRV (6-pin WSON), RθJA = 72.8°C/W

    (1)

(1)See the output capacitor requirements in the Recomended Operation Conditions table

The TPS7B81 is a low-dropout (LDO) linear regulator that operates from input voltages up to 40 V and can supply up to 150 mA in current. With only 2.7 µA of quiescent current at light loads, the device is an excellent choice for wide input supply designs and high cell count battery applications that need very low standby power consumption. The 45-V transient tolerance provides additional headroom for applications where inductive kickback may be present, thereby reducing external circuitry for voltage suppression.

With integrated short-circuit and overcurrent limiting, the TPS7B81 protects the system during fault conditions. In addition to the low standby power consumption, the very low dropout voltage in light load conditions helps maintain regulation even when powered by depleted batteries.

The TPS7B81 is available in thermally enhanced, 8-pin HVSSOP and 6-pin WSON packages. Both packages offer high thermal conductivity, and their small size supports compact design, making them well suited for space-limited applications such as power tools or motor drive modules and battery packs.

The TPS7B81 is a low-dropout (LDO) linear regulator that operates from input voltages up to 40 V and can supply up to 150 mA in current. With only 2.7 µA of quiescent current at light loads, the device is an excellent choice for wide input supply designs and high cell count battery applications that need very low standby power consumption. The 45-V transient tolerance provides additional headroom for applications where inductive kickback may be present, thereby reducing external circuitry for voltage suppression.

With integrated short-circuit and overcurrent limiting, the TPS7B81 protects the system during fault conditions. In addition to the low standby power consumption, the very low dropout voltage in light load conditions helps maintain regulation even when powered by depleted batteries.

The TPS7B81 is available in thermally enhanced, 8-pin HVSSOP and 6-pin WSON packages. Both packages offer high thermal conductivity, and their small size supports compact design, making them well suited for space-limited applications such as power tools or motor drive modules and battery packs.

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* Data sheet TPS7B81 150-mA, 40-V, Ultra-Low-IQ, Low-Dropout Regulator datasheet PDF | HTML 2020年 4月 23日
White paper Understanding the Foundations of Quiescent Current in Linear Power Systems 2021年 2月 18日
EVM User's guide TPS7B81EVM-025 Evaluation Module User's Guide 2019年 2月 15日

設計與開發

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開發板

TPS7B81EVM-025 — TPS7B81 150-mA、無電池 (40-V)、超低 IQ LDO 穩壓器評估模組

The TPS7B81EVM-025 evaluation module (EVM) is designed for a typical configuration to evaluate the operation and performance of the TPS7B81, which is a 150-mA, high-voltage, ultra-low-IQ, low-dropout (LDO) linear regulator.

The EVM circuit board is configured to be a reference design for engineering (...)

使用指南: PDF
TI.com 無法提供
參考設計

TIDA-010253 — Battery control unit reference design for energy storage systems

This reference design is a central controller for a high-voltage Lithium-ion (Li-ion), lithium iron phosphate (LiFePO4) battery rack. This design provides driving circuits for high-voltage relay, communication interfaces, (including RS-485, controller area network (CAN), daisy chain, and Ethernet), (...)
Design guide: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HVSSOP (DGN) 8 Ultra Librarian
WSON (DRV) 6 Ultra Librarian
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