L6919E

Input Voltage :
Switching Frequency :
Output Current :
Duty Cycle (Max) :
Number of Outputs : 1
Mounting Style : SMD/SMT
Maximum Operating Temperature : + 125 C
Output Voltage : 0.8 V to 1.55 V
Package / Case : SOP-28


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




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	-0.3toVcc+0.3	V
	VID0 to VID4	-0.3to5	V
	All other pins to PGND	-0.3to7	V
Vphase	Sustainable Peak Voltage t < 20ns @ 600kHz	26	V
UGATEx Pin	Maximum Withstanding Voltage Range Test Condition: CDF-AEC-Q100-002"Human Body Model"Acceptance Criteria: "Normal Performance"	±1000	V
OTHER PINS		±2000	V

Description

L6919E is a power supply controller specifically designed to provide a high performance DC/DC conversion for high current microprocessors. L6919E 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.

L6919E 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.

Parameters:

Technical/Catalog Information	L6919E
Vendor	STMicroelectronics
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	5 ~ 12 V
Voltage - Output	0.8 ~ 1.55 V
Current - Output	2A
Power - Output	2W
Package / Case	28-SOIC (7.5mm Width)
Packaging	Tube
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	-40°C ~ 150°C
Frequency - Switching	150kHz
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	L6919E L6919E