LP3965 1.5A Fast Ultra Low Dropout Linear Regulator | TI.com

LP3965
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
1.5A Fast Ultra Low Dropout Linear Regulator

 

Recommended alternative parts

  • LP3855  -  Stable W/ Ceramic Caps, Has Only Half The Dropout Voltage
  • LP3875  -  Utilizes Smaller Input And Output Capacitors
  • LP3892  -  For Input Voltages As Low As 1.5V, 1.8V, 2.0V And 2.5V

Description

The LP3962/LP3965 series of fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond very fast to step changes in load which makes them suitable for low voltage microprocessor applications. The LP3962/LP3965 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3962/LP3965 to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically 38mV at 150mA load current and 380mV at 1.5A load current.

Ground Pin Current: Typically 5mA at 1.5A load current.

Shutdown Mode: Typically 15µA quiescent current when the shutdown pin is pulled low.

Error Flag: Error flag goes low when the output voltage drops 10% below nominal value (for LP3962).

SENSE: Sense pin improves regulation at remote loads. (For LP3965)

Precision Output Voltage: Multiple output voltage options are available ranging from 1.2V to 5.0V and adjustable (LP3965), with a specified accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

Features

  • Ultra Low Dropout Voltage
  • Low Ground Pin Current
  • Load Regulation of 0.04%
  • 15µA Quiescent Current in Shutdown Mode
  • Specified Output Current of 1.5A DC
  • Available in SOT-223,SFM/TO-263 and TO-220 Packages
  • Output Voltage Accuracy ± 1.5%
  • Error Flag Indicates Output Status (LP3962)
  • Sense Option Improves Better Load Regulation (LP3965)
  • Extremely Low Output Capacitor Requirements
  • Overtemperature/Overcurrent Protection
  • −40°C to +125°C Junction Temperature Range

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Parametrics

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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 PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
LP3965 Order now Adjustable Output
Fixed Output    
1.5     7     2.5     5     1.215     1.8
2.5
3.3    
DDPAK/TO-263 | 5
SOT-223 | 5
TO-220 | 5    
Enable
Power Good    
1     -40 to 125     50     150     1.31 | 1ku     Catalog     32     3     380     4     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5SOT-223: 45 mm2: 6.96 x 6.5 (SOT-223 | 5)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)    
LP3855 Order now Fixed Output     1.5     7     2.5     5     1.8     1.8
2.5
3.3
5    
DDPAK/TO-263 | 5
SOT-223 | 5
TO-220 | 5    
Enable     1     -40 to 125     32     100     2.05 | 1ku     Catalog       2     240     4     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5SOT-223: 45 mm2: 6.96 x 6.5 (SOT-223 | 5)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)    
LP3875 Order now Fixed Output     1.5     7     2.5     5     1.8     1.8
2.5
3.3
5    
DDPAK/TO-263 | 5
SOT-223 | 5
TO-220 | 5    
Enable     1     -40 to 125     32     100     1.31 | 1ku     Catalog       3.3     380     6     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5SOT-223: 45 mm2: 6.96 x 6.5 (SOT-223 | 5)
5TO-220: 86 mm2: 8.47 x 10.16 (TO-220 | 5)    
LP3892 Samples not available Fixed Output     1.5     5.5     1.34     1.8     1.2     1.2
1.5
1.8    
DDPAK/TO-263 | 5
SO PowerPAD | 8    
Enable     1     -40 to 125     40     150     1.59 | 1ku     Catalog     30     2     140     4     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
8SO PowerPAD: 19 mm2: 3.9 x 4.89 (SO PowerPAD | 8)