LP38858 (正在供货)

具有软启动的 1.5A 快速响应高分辨率 LDO 线性稳压器

具有软启动的 1.5A 快速响应高分辨率 LDO 线性稳压器 - LP38858
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描述

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

特性

  • 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

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参数 与其它产品相比 单通道 LDO

 
Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Rating
Operating Temperature Range (C)
Pin/Package
LP38858 LP38851 LP38852 LP38853 LP38855 LP38856 LP38859
1.5    0.8    1.5    3    1.5    3    3   
Fixed Output    Adjustable Output    Adjustable Output    Adjustable Output    Fixed Output    Fixed Output    Fixed Output   
0.98    0.915    0.93    1.04    0.98    1.15    1.15   
5.5    5.5    5.5    5.5    5.5    5.5    5.5   
1.2          0.8
1.2   
0.8
1.2   
0.8
1.2   
1.2    0.8    0.8    0.8    0.8    0.8    0.8   
1.2    1.8    1.8    1.8    1.2    1.2    1.2   
10    10    10    10    10    10    10   
180    115    130    240    130    240    350   
1    2    3    2    2    1    1   
150    90    90    150    150    150    150   
37    50    35    35    37    37    37   
Ceramic    Ceramic    Ceramic    Ceramic    Ceramic    Ceramic    Ceramic   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125    -40 to 125   
5DDPAK/TO-263
5TO-220   
7DDPAK/TO-263
7TO-220
8SO PowerPAD   
7DDPAK/TO-263
7TO-220
8SO PowerPAD   
7DDPAK/TO-263
7TO-220
8SO PowerPAD   
5DDPAK/TO-263
5TO-220   
5DDPAK/TO-263
5TO-220   
5DDPAK/TO-263
5TO-220   
New! Interactive Design
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WEBENCH® Designer LP38858

  最小   最大 范围
输入电压  V 1.38 to 5.5V
输出电压  V 1.2 to 1.2V
输出电流  A ≤ 1.5A
环境温度  °C -40 to 125°C


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