LP2981A 100-mA ultra-low dropout regulator with shutdown & 0.75% tolerance | TI.com

LP2981A (ACTIVE)

100-mA ultra-low dropout regulator with shutdown & 0.75% tolerance

 

Description

The LP2981 and LP2981A families of fixed-output, low-dropout regulators offer exceptional, cost-effective performance for both portable and non-portable applications. Available in fixed voltages of 2.8 V, 3 V, 3.3 V, and 5 V, the family has an output tolerance of 0.75% for the A-grade devices (1.25% for the standard grade) and is capable of delivering 100-mA continuous load current. Standard regulator features, such as overcurrent and overtemperature protection, are included.

The LP2981 and LP2981A have features that make the regulators ideal candidates for a variety of portable applications:

  • Low dropout: A PNP pass element allows a typical dropout of 200 mV at 100-mA load current and 7 mV at 1-mA load.
  • Low quiescent current: The use of a vertical PNP process allows for quiescent currents that are considerably lower than those associated with traditional lateral PNP regulators.
  • Shutdown: A shutdown feature is available, allowing the regulator to consume only 0.01 µA when the ON/OFF pin is pulled low.

Features

  • Output Tolerance of
    • 0.75% (A Grade)
    • 1.25% (Standard Grade)
  • Ultra-Low Dropout Typically:
    • 200 mV at Full Load of 100 mA
    • 7 mV at 1 mA
  • Low IQ: 600 µA Typical at Full Load of 100 mA
  • Shutdown Current: 0.01 µA Typical
  • Fast Transient Response to Line and Load
  • Overcurrent and Thermal Protection
  • High Peak Current Capability
  • Low ZOUT Over Wide Frequency Range
  • –40°C to 125°C Temperature Range

Parametrics

Compare all products in Linear regulators (LDO) Email Download to Excel
Part number Order 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) Approx. price (US$) Rating Output capacitor type PSRR @ 100 KHz (dB) Accuracy (%) Vdo (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
LP2981A Order now Fixed Output     0.1     16     2.2     5     2.8     2.8
2.9
3
3.3
5    
SOT-23 | 5     Enable     1     -40 to 125     205     160     0.21 | 1ku     Catalog     Non-Ceramic     41     2     200     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
LP2981 Order now Fixed Output     0.1     16     2.2     5     2.8     2.8
2.9
3
3.3
5    
SOT-23 | 5     Enable     1     -40 to 125     205     160     0.19 | 1ku     Catalog     Non-Ceramic     41     6     200     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
LP2985 Order now Fixed Output     0.15     16     2.2     10     1.8     1.8
2.5
2.8
2.9
3
3.3
5
10    
SOT-23 | 5     Enable     1     -40 to 125     206     30     0.18 | 1ku     Catalog     Ceramic     40     5     280     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
LP2985A Order now Fixed Output     0.15     16     2.2     10     1.8     1.8
2.5
2.8
2.9
3
3.3
5
10    
SOT-23 | 5    
   
1     -40 to 125     206     30     0.22 | 1ku     Catalog     Ceramic
Non-Ceramic    
40     3     280     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)