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线性和低压降 (LDO) 稳压器

LP38852

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具有使能功能的 1.5A、低输入电压 (0.93V)、可调节超低压降稳压器

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LP38852

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产品详情

Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.93 Iout (max) (A) 1.5 Output options Adjustable Output Vout (max) (V) 1.8 Vout (min) (V) 0.8 Noise (µVrms) 90 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 10 Features Enable, Soft start Thermal resistance θJA (°C/W) 34 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 130 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 5.5 Vin (min) (V) 0.93 Iout (max) (A) 1.5 Output options Adjustable Output Vout (max) (V) 1.8 Vout (min) (V) 0.8 Noise (µVrms) 90 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 10 Features Enable, Soft start Thermal resistance θJA (°C/W) 34 Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Accuracy (%) 3 Dropout voltage (Vdo) (typ) (mV) 130 Operating temperature range (°C) -40 to 125
HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm) TO-263 (KTW) 7 153.924 mm² (10.1 mm × 15.24 mm) TO-220 (NDZ) 7 82.6008 mm² (10.16 mm × 8.13 mm)
  • Input VIN Range 0.93 V to 5.5 V
  • Adjustable VOUT Range 0.8 V to 1.8 V
  • Wide VBIAS Supply Operating Range 3 V to 5.5 V
  • Dropout Voltage of 130 mV (Typical) at 1.5-A Load Current
  • Precision Output Voltage Across All Line and Load Conditions:
    • ±1.5% VADJ for TJ = 25°C
    • ±2% VADJ for 0°C ≤ TJ ≤ +125°C
    • ±3% VADJ for –40°C ≤ TJ ≤ +125°C
  • Overtemperature and Overcurrent Protection
  • Stable with 10-µF Ceramic Capacitors
  • Available in 7-pin TO-220, 7-Pin DDPAK/TO-263, and 8-Pin SO PowerPAD Packages
  • −40°C to +125°C Operating Junction Temperature Range
  • Input VIN Range 0.93 V to 5.5 V
  • Adjustable VOUT Range 0.8 V to 1.8 V
  • Wide VBIAS Supply Operating Range 3 V to 5.5 V
  • Dropout Voltage of 130 mV (Typical) at 1.5-A Load Current
  • Precision Output Voltage Across All Line and Load Conditions:
    • ±1.5% VADJ for TJ = 25°C
    • ±2% VADJ for 0°C ≤ TJ ≤ +125°C
    • ±3% VADJ for –40°C ≤ TJ ≤ +125°C
  • Overtemperature and Overcurrent Protection
  • Stable with 10-µF Ceramic Capacitors
  • Available in 7-pin TO-220, 7-Pin DDPAK/TO-263, and 8-Pin SO PowerPAD Packages
  • −40°C to +125°C Operating Junction Temperature Range

The LP38852-ADJ 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 ultralow 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.

130 mV (typical) at 1.5-A load current.

10 mA (typical) at 1.5-A load current.

Programmable soft-start time.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP38852-ADJ 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 ultralow 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.

130 mV (typical) at 1.5-A load current.

10 mA (typical) at 1.5-A load current.

Programmable soft-start time.

For all available packages, see the orderable addendum at the end of the data sheet.
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技术文档

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LP38852-ADJ 1.5-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft-Start 数据表 (Rev. F) PDF | HTML 2015-12-17
选择指南 电源管理指南 2018 2018-7-31
应用手册 AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) 2013-4-24
应用手册 Application Note 1560 LP38852MR-ADJ Evaluation Board (cn) 2007-3-17

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封装 引脚 CAD 符号、封装和 3D 模型
HSOIC (DDA) 8 Ultra Librarian
TO-263 (KTW) 7 Ultra Librarian
TO-220 (NDZ) 7 Ultra Librarian
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