LP38502-ADJ 1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs | TI.com

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1.5A FlexCap Low Dropout Linear Regulator for 2.7V to 5.5V Inputs



TI’s FlexCap low-dropout (LDO) linear regulators feature unique compensation that allow use of any type of output capacitor with no limits on minimum or maximum equivalent series resistance (ESR). The LP38500 and LP38502 series of LDOs operates from a 2.7-V to 5.5-V input supply. These ultra-low-dropout linear regulators respond very quickly to step changes in load, making them suitable for low-voltage microprocessor applications. Developed on a CMOS process (utilizing a PMOS pass transistor) the LP38500-ADJ and LP38502-ADJ have low quiescent currents that changes little with load current.

  • GND Pin Current: Typically 2 mA at 1.5-A load current.
  • Disable Mode: Typically 25-nA quiescent current when the EN pin is pulled low. (LP38502-ADJ)
  • Simplified Compensation: Stable with any type of output capacitor, regardless of ESR.
  • Precision Output: grade versions available with 1.5% VADJ tolerance (25°C) and 3% over line, load, and temperature.


  • Input Voltage: 2.7 V to 5.5 V
  • Adjustable Output Voltage: 0.6 V to 5 V
  • FlexCap: Stable with Ceramic, Tantalum, or
    Aluminum Capacitors
  • Stable with 10-µF Input and Output Capacitors
  • Low Ground-Pin Current
  • 25-nA Quiescent Current in Shutdown Mode
  • Ensured Output Current of 1.5 A
  • Ensured VADJ Accuracy of ±1.5% at 25°C (A
  • Ensured Accuracy of ±3.5% at 25°C (STD)
  • Overtemperature and Overcurrent Protection
  • ENABLE Pin (LP38502)

WEBENCH® Designer LP38502-ADJ

  Min   Max Range
Vin  V 2.7 to 5.5V
Product Option
Vout  V
Iout  A ≤ 1.5A
Ambient Temp  °C -40.0 to 125.0°C


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Part number Order Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (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)
LP38502-ADJ Order now Adjustable Output     1.5     5.5     2.7     5     0.6     DDPAK/TO-263 | 5
TO-263 | 5
WSON | 8    
Enable     1     -40 to 125     33     100     0.73 | 1ku     Catalog     25     2     220     2     5DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 5)
5TO-263: 142 mm2: 14.01 x 10.16 (TO-263 | 5)
8WSON: 8 mm2: 2.5 x 3 (WSON | 8)