LT3999

PRODUCTION

Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control

Part Models
12
1ku List Price
Starting From $3.31
Viewing:

Part Details

  • Wide Input Operating Range: 2.7V to 36V
  • Dual 1A Switches with Programmable Current Limit
  • Programmable Switching Frequency: 50kHz to 1MHz
  • Frequency Synchronization Up to 1MHz
  • ΔVIN Compensation Using Duty Cycle Control
  • Low Noise Topology
  • Programmable Input Over and Undervoltage Lockout
  • Cross Conduction Prevention Circuitry
  • Programmable Soft-Start
  • Low Shutdown Current: <1μA
  • 10-Lead MSOP and DFN Packages
LT3999
Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control
12V to 12V, 10W Low Noise Isolated DC/DC Converter LT3999 Line Regulation with Duty Cycle Control 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

Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • LT3999
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
EVAL-MICROSEMI-SIC-MODULE

MICROSEMI-SIC-MODULE Evaluation Board

Features and Benefits

  • Half Bridge Topology
  • 1200V, 50A, 200kHz
  •  >100kV/us CMTI
  • 4 layers PCB
  • 12V VIN supply
  • Independent High Side and Low Side PWM inputs (Single control with 70ns deadtime for testing)
  • 1 LT3999 + 1 ADuM4135 for both High Side and Low Side
  •  Full tested ‘Desat protection’
  •  Low inductive and high current terminals for V+, V- and AC phase connection
 

Product Details

High power evaluation board, up to 1200V & 50A @ 200kHz switching frequency featuring the combo ADI ADuM4135 isolated gate driver + LT3999 isolated power supply controller + Microsemi SiC power module in half bridge configuration.


For more information, email RenwBoards@analog.com.

eval board
ADSKPMB10-EV-FMCZ

Single-Channel, Fully Isolated, Low Latency Data Acquisition System (DAQ)

Features and Benefits

  • Fully Isolated PMOD-to-FMC interposer board
  • Software programmable bipolar input ranges (±1.1 V to ±11.0 V)
    • Allows single-ended and differential signals
  • GΩ input impedance allows direct interface with sensors
  • On-board 5 V reference and buffer
  • Complete power management solution
  • SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
  • PC software for control and data analysis of time and frequency domain

Product Details

The ADSKPMB10-EV-FMCZ signal chain kit is a two-board solution, which consists of a Precision Medium Bandwidth Data Acquisition Solution on a PMOD form factor and a Fully Isolated PMOD-to-FMC interposer board.

The Precision Medium Bandwidth Data Acquisition Solution features a discrete programmable gain instrumentation amplifier (PGIA) that was built using a 30V, High Speed, Low Noise, Low Bias Current, JFET Operational Amplifier, the ADA4627-1, a Precision Quad Matched Resistor Network, the LT5400, a Low Capacitance, 4-Channel, ±15 V/+12 V iCMOS Multiplexer, the ADG1209 and the internal Fully Differential Amplifier (FDA) ADC driver of the ADAQ4003. The PGIA in thru front-end offers high input impedance that allows direct interface with a variety of sensors. A programmable gain is often needed to adapt the circuit to different input signal amplitudes—unipolar or bipolar and single-ended or differential with varying common-mode voltages. The PGIA works with the ADAQ4003, an 18-Bit, 2 MSPS, µModule® Data Acquisition Solution.

The Fully Isolated PMOD-to-FMC interposer board was designed using a Low Noise, 1A, 1MHz Push-Pull DC/DC Driver with Duty Cycle Control, the LT3999, a Robust 3.0kVrms Digital Isolators w/ Fail-Safe for the SPI lines and PGIA gain control pins, the ADuM152N and the ADuM120N, and a Low noise and ultra-low noise LDO regulators the ADP7105 and the ADP150N respectively.

APPLICATIONS

  • Data acquisition and system monitoring
  • Automated test equipment
  • Instrumentation 
  • Medical equipment

eval board
DC2049A

LT3999EMSE Isolated Demo Board | Dual Output Push-Pull Transformer Driver, 10V ≤ VIN ≤ 15.5V; VOUT = ±12V @ 0.2A

Product Details

The DC2049A demonstrates how a power supply regulates two output voltage by using the LT3999 and low dropout (LDO) regulators.


The LT3999 is a monolithic push-pull DC/DC driver which features a wide input range and small external passive components.


The LT3999 has duty circle control for ΔVIN compensation, which allows for a wide input voltage range and low LDO losses.

EVAL-MICROSEMI-SIC-MODULE
MICROSEMI-SIC-MODULE Evaluation Board
EVAL-MICROSEMI-SIC-MODULE
ADSKPMB10-EV-FMCZ
Single-Channel, Fully Isolated, Low Latency Data Acquisition System (DAQ)
ADSKPMB10-EV-FMCZ ADSKPMB10-EV-FMCZ - Top View ADSKPMB10-EV-FMCZ - Bottom View ADSKPMB10-EV-FMCZ Kit with SDP-H1 ADSKPMB10-EV-FMCZ Kit with SDP-H1 - Top View
DC2049A
LT3999EMSE Isolated Demo Board | Dual Output Push-Pull Transformer Driver, 10V ≤ VIN ≤ 15.5V; VOUT = ±12V @ 0.2A
DC2049A Demo Board DC2049A Demo Board DC2049A Demo Board DC2049A Demo Board DC2049A demo board image DC2049A - Schematic

Latest Discussions

Recently Viewed