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Product details

Parameters

Output options Adjustable Output Iout (Max) (A) 1.5 Vin (Max) (V) 5.5 Vin (Min) (V) 0.93 Vout (Max) (V) 1.8 Vout (Min) (V) 0.8 Noise (uVrms) 90 Iq (Typ) (mA) 10 Thermal resistance θJA (°C/W) 34 Load capacitance (Min) (µF) 10 Rating Catalog Regulated outputs (#) 1 Features Enable, Soft Start Accuracy (%) 3 PSRR @ 100 KHz (dB) 35 Dropout voltage (Vdo) (Typ) (mV) 130 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 TO-220 (NDZ) 7 83 mm² 10.16 x 8.13 TO-263 (KTW) 7 154 mm² 10.1 x 15.24 open-in-new Find other Linear regulators (LDO)

Features

  • 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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Description

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.
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet LP38852-ADJ 1.5-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator With Enable and Soft-Start datasheet (Rev. F) Dec. 17, 2015
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
User guide AN-1560 LP38852MR-ADJ Evaluation Board (Rev. B) Apr. 24, 2013
Application note AN-1815 LDOs Ease the Stress of Start-Up (Rev. A) Apr. 24, 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTW) 7 View options
SO PowerPAD (DDA) 8 View options
TO-220 (NDZ) 7 View options

Ordering & quality

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