LTC3808

PRODUCTION

No RSENSE, Low EMI, Synchronous DC/DC Controller with Output Tracking

Part Models
4
1ku List Price
Starting From $3.14
Viewing:

Part Details

  • Programmable Output Voltage Tracking
  • Sense Resistor Optional
  • Spread Spectrum Modulation for Low Noise
  • Constant Frequency Current Mode Operation for Excellent Line and Load Transient Response
  • Wide VIN Range: 2.75V to 9.8V
  • Wide VOUT Range: 0.6V to VIN
  • 0.6V ±1.5% Reference
  • Low Dropout Operation: 100% Duty Cycle
  • True PLL for Frequency Locking or Adjustment (Frequency Range: 250kHz to 750kHz)
  • Selectable Burst Mode®/Pulse Skipping/Forced Continuous Operation
  • Auxiliary Winding Regulation
  • Internal Soft-Start Circuitry
  • Power Good Output Voltage Monitor
  • Output Overvoltage Protection
  • Micropower Shutdown: IQ = 9µA
  • Tiny Thermally Enhanced Leadless (4mm × 3mm) DFN or 16-lead SSOP Package
LTC3808
No RSENSE, Low EMI, Synchronous DC/DC Controller with Output Tracking
High Efficiency, 550kHz Step-Down Converter Efficiency and Power Loss vs Load Current Product Package 1 Product Package 2
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet

This is the most up-to-date revision of the Data Sheet.

Learn More
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Digital Power System Managers 1
LTC2974 RECOMMENDED FOR NEW DESIGNS 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Multiple Output Buck Regulators 1
LTC3880 RECOMMENDED FOR NEW DESIGNS Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
Silicon Oscillators 2
LTC6908 Resistor Set SOT-23 Oscillator with Spread Spectrum Modulation
LTC6909 PRODUCTION 1 to 8 Output, Multiphase Silicon Oscillator with Spread Spectrum Modulation
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LTC3808
LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
DC769A

LTC3808EDE Demo Board | Tracking, Spread Spectrum, Prog Peak Current, VIN = 2.7V to 8V, VOUT = 1.8V @ 5A/3.5A/2.5A

Product Details

Demonstration circuit 769A is a high efficiency synchronous step-down DC/DC converter with output tracking and spread spectrum functions featuring the LTC3808EDE No RSENSE controller. The demo board provides 1.8V @ up to 5A output current from a 2.7V to 8V input voltage. A jumper allows the user to adjust the peak current limit, thereby setting the maximum output current to 5A, 3.5A or 2.5A.

DC769A
LTC3808EDE Demo Board | Tracking, Spread Spectrum, Prog Peak Current, VIN = 2.7V to 8V, VOUT = 1.8V @ 5A/3.5A/2.5A
DC769A - Schematic

Latest Discussions

No discussions on LTC3808 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed