LP2953QML Adjustable Micropower Low-Dropout Voltage Regulator | 德州仪器 TI.com.cn

LP2953QML (正在供货)

Adjustable Micropower Low-Dropout Voltage Regulator

Adjustable Micropower Low-Dropout Voltage Regulator - LP2953QML
数据表
 

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描述

The LP2953A is a micropower voltage regulator with very low quiescent current (130 μA typical at 1 mA load) and very low dropout voltage (typ. 60 mV at light load and 470 mV at 250 mA load current). It is ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life.

The LP2953A retains all the desirable characteristics of the LP2951, but offers increased output current, additional features, and an improved shutdown function.

The internal crowbar pulls the output down quickly when the shutdown is activated.

The error flag goes low if the output voltage drops out of regulation.

Reverse battery protection is provided.

The internal voltage reference is made available for external use, providing a low-T.C. reference with very good line and load regulation.

特性

  • Output Voltage Adjusts from 1.23V to 29V
  • Ensured 250 mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Reverse Battery Protection
  • 50 mA (Typical) Output Pulldown Crowbar
  • Auxiliary Comparator Included with CMOS/TTL Compatible Output Levels. Can be used for Fault Detection, Low Input Line Detection, etc.

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参数 与其它产品相比 线性稳压器(LDO)

 
Output options
Iout (Max) (A)
Vin (Max) (V)
Vin (Min) (V)
Vout (Max) (V)
Vout (Min) (V)
Fixed output options (V)
Package Group
Features
Regulated outputs (#)
Operating temperature range (C)
Thermal Resistance θJA (°C/W)
Noise (uVrms)
Rating
Output capacitor type
PSRR @ 100 KHz (dB)
Accuracy (%)
Vdo (Typ) (mV)
Iq (Typ) (mA)
Package size: mm2:W x L (PKG)
LP2953QML LP2953QML-SP
Adjustable Output
Fixed Output    
Adjustable Output
Fixed Output    
0.25     0.25    
30     30    
-20     -20    
29     29    
1.23     1.23    
3.3
5    
3.3
5    
CFP | 16     CFP | 16    
Enable
Output Discharge
Power Good    
Enable
Output Discharge
Power Good    
1     1    
-55 to 125     -55 to 125    
42     42    
80     80    
Military     Space    
Non-Ceramic     Non-Ceramic    
32     32    
3     3    
470     470    
0.13     0.13    
See datasheet (CFP)     See datasheet (CFP)