首頁 電源管理 線性與低壓差 (LDO) 穩壓器
首頁
電源管理
線性與低壓差 (LDO) 穩壓器

LP38858

現行

1.5A、低輸入電壓 (0.98-V)、高精度、超低壓降電壓穩壓器

立即訂購
產品規格表

LP38858

現行
立即訂購

產品詳細資料

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.98 Iout (max) (A) 1.5 Output options Fixed Output Vout (max) (V) 1.2 Vout (min) (V) 1.2 Fixed output options (V) 1.2 Noise (µVrms) 150 PSRR at 100 KHz (dB) 37 Iq (typ) (mA) 10 Features Soft start Thermal resistance θJA (°C/W) 60 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 180 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.98 Iout (max) (A) 1.5 Output options Fixed Output Vout (max) (V) 1.2 Vout (min) (V) 1.2 Fixed output options (V) 1.2 Noise (µVrms) 150 PSRR at 100 KHz (dB) 37 Iq (typ) (mA) 10 Features Soft start Thermal resistance θJA (°C/W) 60 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 1 Dropout voltage (Vdo) (typ) (mV) 180 Operating temperature range (°C) -40 to 125
TO-220 (NDH) 5 86.0552 mm² (10.16 mm × 8.47 mm) TO-263 (KTT) 5 154.8384 mm² (10.16 mm × 15.24 mm)
  • Standard VOUT Values of 0.8V and 1.2V
  • Wide VBIAS Supply Operating Range of 3.0V to 5.5V
  • Stable with 10µF Ceramic Capacitors
  • Dropout Voltage of 130 mV (Typical) at 1.5A Load Current
  • Precision Output Voltage across All Line and Load Conditions:
    • ±1.0% VOUT for TJ = 25°C
    • ±2.0% VOUT for 0°C ≤ TJ ≤ +125°C
    • ±3.0% VOUT for -40°C ≤ TJ ≤ +125°C
  • Over-Temperature and Over-Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • Custom VOUT Values between 0.8V and 1.2V are Available
  • −40°C to +125°C Operating Temperature Range

All trademarks are the property of their respective owners.

  • Standard VOUT Values of 0.8V and 1.2V
  • Wide VBIAS Supply Operating Range of 3.0V to 5.5V
  • Stable with 10µF Ceramic Capacitors
  • Dropout Voltage of 130 mV (Typical) at 1.5A Load Current
  • Precision Output Voltage across All Line and Load Conditions:
    • ±1.0% VOUT for TJ = 25°C
    • ±2.0% VOUT for 0°C ≤ TJ ≤ +125°C
    • ±3.0% VOUT for -40°C ≤ TJ ≤ +125°C
  • Over-Temperature and Over-Current Protection
  • Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
  • Custom VOUT Values between 0.8V and 1.2V are Available
  • −40°C to +125°C Operating Temperature Range

All trademarks are the property of their respective owners.

The LP38858 is a high current, fast response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides voltage to drive the gate of the N-MOS power transistor, while VIN is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low VIN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The LP38858 is available in TO-220 and DDPAK/TO-263 5-Lead packages.

Dropout Voltage: 130mV (typical) at 1.5A load current.

Low Ground Pin Current: 10 mA (typical) at 1.5A load current.

Soft-Start: Programmable Soft-Start time.

Precision Output Voltage: ±1.0% for TJ = 25°C and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions

The LP38858 is a high current, fast response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: VBIAS provides voltage to drive the gate of the N-MOS power transistor, while VIN is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low VIN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The LP38858 is available in TO-220 and DDPAK/TO-263 5-Lead packages.

Dropout Voltage: 130mV (typical) at 1.5A load current.

Low Ground Pin Current: 10 mA (typical) at 1.5A load current.

Soft-Start: Programmable Soft-Start time.

Precision Output Voltage: ±1.0% for TJ = 25°C and ±2.0% for 0°C ≤ TJ ≤ +125°C, across all line and load conditions
filter 尋找其它 線性與低壓差 (LDO) 穩壓器
下載 觀看有字幕稿的影片 影片

技術文件

找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 2
重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 LP38858 1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start datasheet (Rev. D) 2013/4/8
選擇指南 Power Management Guide 2018 (Rev. R) 2018/6/25

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

封裝 針腳 CAD 符號、佔位空間與 3D 模型
TO-220 (NDH) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片