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L6919C

Features: · 2 PHASE OPERATION WITH SYNCRHONOUS RECTIFIER CONTROL· ULTRA FAST LOAD TRANSIENT RESPONSE· INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT· TTL-COMPATIBLE 5 BIT PROGRAMMABLE OUTPUT FROM 0.800V TO 1.550V WITH 25mV STEPS· DYNAMIC VID MANAGEMENT· 0.6% OUTPUT VOLTAGE ACCURACY· 1...

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SeekIC No. : 004389319 Detail

L6919C: Features: · 2 PHASE OPERATION WITH SYNCRHONOUS RECTIFIER CONTROL· ULTRA FAST LOAD TRANSIENT RESPONSE· INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT· TTL-COMPATIBLE 5 BIT PROGRAMMABLE O...

L6919C Data Sheet

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Part Number:
L6919C
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· 2 PHASE OPERATION WITH SYNCRHONOUS RECTIFIER CONTROL
· ULTRA FAST LOAD TRANSIENT RESPONSE
· INTEGRATED HIGH CURRENT GATE DRIVERS: UP TO 2A GATE CURRENT
· TTL-COMPATIBLE 5 BIT PROGRAMMABLE OUTPUT FROM 0.800V TO 1.550V WITH 25mV STEPS
· DYNAMIC VID MANAGEMENT
· 0.6% OUTPUT VOLTAGE ACCURACY
· 10% ACTIVE CURRENT SHARING ACCURACY
· DIGITAL 2048 STEP SOFT-START
· OVERVOLTAGE PROTECTION
· OVERCURRENT PROTECTION REALIZED USING THE LOWER MOSFET'S RdsON OR A SENSE RESISTOR
· OSCILLATOR EXTERNALLY ADJUSTABLE AND INTERNALLY FIXED AT 200kHz
· POWER GOOD OUTPUT AND INHIBIT FUNCTION
· REMOTE SENSE BUFFER
· PACKAGE: SO-28


Application

· POWER SUPPLY FOR SERVERS AND WORKSTATIONS
· POWER SUPPLY FOR HIGH CURRENT MICROPROCESSORS
· DISTRIBUTED POWER SUPPLY


Pinout

Connection Diagram


Specifications

Symbol Parameter Value Unit
Vcc, VCCDR to PGND 15 V
VBOOT-VPHASE Boot Voltage 15 V
VUGATE1-VPHASE1
VUGATE2-VPHASE2		   15 V
  LGATE1, PHASE1, LGATE2, PHASE2 to PGND -0.3 to Vcc+0.3 V
  VID0 to VID4 -0.3 to 5 V
  All other pins to PGND -0.3 to 7 V
Vphase Sustainable Peak Voltage t < 20ns @ 600kHz 26 V



Description

L6919C is a power supply controller specifically designed to provide a high performance DC/DC conversion for high current microprocessors. L6919C  implements a dual-phase step-down controller with a 180° phase-shift between each phase. A precise 5-bit digital to analog converter (DAC) allows adjusting the output voltage from 0.800V to 1.550V with 25mV binary steps managing On-The-Fly VID code changes.

The high precision internal reference assures the selected output voltage to be within ±0.6%. The high peak current gate drive affords to have fast switching to the external power mos providing low switching losses.

L6919C assures a fast protection against load over current and load over/under voltage. An internal crowbar is provided turning on the low side mosfet if an over-voltage is detected. In case of over-current, the system works in Constant Current mode.




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