Analog Devices LTC7899
The LTC7899 can alternatively be configured as a stepup (Boost) operation with pass-through. The gate drive voltage for the LTC7899 can be programmed from 5V to 10V to allow the use of logic or standard-level MOSFETs to maximize efficiency. The low no-load quiescent current extends operating run time in battery-powered systems.| Part No. | LTC7899 |
|---|---|
| Datasheet | LTC7899 Download |
| Manufacturer |  Analog Devices |
| Description | 140V Negative to Positive Synchronous Boost Controller |
| Buy | Stock & Price |
FEATURES
● Converts Negative Input to Positive Output Regulated with Respect to Ground● Wide |VIN-|+VOUT Range: 4V to 135V (140V ABS MAX)
● Internal Feedback Level Shifter for Easy Output Voltage Programming with Two Resistors
● Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE, 14V ABS MAX)
● Adjustable Driver Voltage UVLO
● Adaptive or Resistor-Adjustable Dead Times
● Split-Output Gate Drivers for Adjustable Turn-On and Turn-Off Driver Strengths
● Supports Positive Input to Positive Output Boost Up to 135V with Pass-Through
● Operation Down to 1V after Start-Up
● CLK Output for High Power PolyPhase Operation
● Spread Spectrum Frequency Modulation
● Programmable Frequency (100kHz to 2.5MHz)
● Phase-Lockable Frequency (100kHz to 2.5MHz)
● 28-Pin (4mm x 5mm) QFN Package
APPLICATIONS
● Industrial Power Systems● Military/Avionics
● Telecommunications Power Systems
GENERAL DESCRIPTION
The LTC®7899 is a high performance DC/DC negative to positive switching regulator controller that drives all Nchannel synchronous MOSFET stages and can operate from input voltages up to 135V.
