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Automotive 500-mA, 10-V, adjustable low-dropout voltage regulator with enable

LP38693-ADJ-Q1

ACTIVE

Product details

Parameters

Output options Adjustable Output Iout (Max) (A) 0.5 Vin (Max) (V) 10 Vin (Min) (V) 2.7 Vout (Max) (V) 9 Vout (Min) (V) 1.25 Noise (uVrms) 80 Iq (Typ) (mA) 0.055 Thermal resistance θJA (°C/W) 51 Load capacitance (Min) (µF) 1 Rating Automotive Regulated outputs (#) 1 Features Enable, Foldback Overcurrent Protection Accuracy (%) 5 PSRR @ 100 KHz (dB) 45 Dropout voltage (Vdo) (Typ) (mV) 250 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

WSON (NGG) 6 9 mm² 3 x 3 open-in-new Find other Linear regulators (LDO)

Features

  • Wide Input Voltage Range: 2.7 V to 10 V
  • All WSON Options are Available as AEC-Q100 Grade 1
  • Output Voltage Range: 1.25 V to 9 V
  • 2% Adjust (ADJ) Pin Voltage Accuracy (25°C)
  • Low Dropout Voltage: 250 mV at 500 mA
    (Typical, 5-V Out)
  • Precision (Trimmed) Bandgap Reference
  • Ensured Specs for –40°C to 125°C
  • 1-µA Off-State Quiescent Current
  • Thermal Overload Protection
  • Foldback Current Limiting
  • Ground (GND) Pin Curent: 55 µA (Typical) at Full Load
  • Enable (EN) Pin (LP38693-ADJ)
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Description

The LP3869x-ADJ low-dropout CMOS linear regulators provide 2% precision reference voltage, extremely low dropout voltage (250 mV at 500-mA load current, VOUT = 5 V), and excellent AC performance using ultra-low equivalent series resistance (ESR) ceramic output capacitors.

The low thermal resistance of the WSON and SOT-223 packages allow use of the full operating current even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base drive current is required to bias it, thus allowing the GND-pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

For all available packages, see the orderable addendum at the end of the data sheet.
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Download

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet LP3869x-ADJ/Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors datasheet (Rev. K) Jan. 19, 2016
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
20
Description

The LP38693SD-ADJ is a 500mA low-dropout linear regulator whose output voltage can be externally set to any value between 1.25V and 9V using two resistors. The output voltage on this evaluation board is pre-set to 3.30V. This application note gives information about the evaluation board supplied to (...)

Features
  • Output voltage range of 1.25V to 9V
  • 2.0% adjust pin voltage accuracy (25°C)
  • Low dropout voltage: 250MV@ 500mA (typ. 5V out)
  • Wide input voltage range (2.7V to 10V)
  • Precision (trimmed) bandgap reference
  • Guaranteed specs for -40°C to +125°C
  • 1µ A off-state quiescent current
  • Thermal overload protection
  • Foldback (...)

Design tools & simulation

SIMULATION MODEL Download
SNVM596.ZIP (39 KB) - PSpice Model
SIMULATION MODEL Download
SNVMAA2.ZIP (1 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
Uncompressed Digital Video SerDes over Coax for Automotive Mega Pixel CMOS Camera Reference Design
TIDA-00133 The TIDA-00133 reference design is a high speed serial video interface to connect a remote automotive camera module to a display or machine vision processing system. It uses TIs FPD-Link III SerDes technology to transmit uncompressed MegaPixel video data, bidirectional control signals and power (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (NGG) 6 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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