LP38852 具有启用和软启动的 1.5A 快速响应高分辨率可调节 LDO 线性稳压器 | 德州仪器 TI.com.cn

LP38852 (正在供货)

具有启用和软启动的 1.5A 快速响应高分辨率可调节 LDO 线性稳压器

具有启用和软启动的 1.5A 快速响应高分辨率可调节 LDO 线性稳压器 - LP38852
 

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描述

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.

特性

  • 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

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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
LP38852 LP38851 LP38853 LP38855 LP38856 LP38858 LP38859
1.5     0.8     3     1.5     3     1.5     3    
Adjustable Output     Adjustable Output     Adjustable Output     Fixed Output     Fixed Output     Fixed Output     Fixed Output    
0.93     0.915     1.04     0.98     1.15     0.98     1.15    
5.5     5.5     5.5     5.5     5.5     5.5     5.5    
      0.8
1.2    
0.8
1.2    
1.2     0.8
1.2    
0.8     0.8     0.8     0.8     0.8     1.2     0.8    
1.8     1.8     1.8     1.2     1.2     1.2     1.2    
10     10     10     10     10     10     10    
130     115     240     130     240     180     350    
3     2     2     2     1     1     1    
90     90     150     150     150     150     150    
35     50     35     37     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    
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    
5DDPAK/TO-263
5TO-220    
New! Interactive Design
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WEBENCH® Designer LP38852

  最小   最大 范围
输入电压  V 0.98 to 5.5V
输出电压  V 0.8 to 1.8V
输出电流  A ≤ 1.5A
环境温度  °C -40 to 125°C


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