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L6911ETR, L6916D, L6917

Table of contents:
Info of L6911ETR
Info of L6916D
Info of L6917

L6911ETR, L6916D, L6917 Selling Leads, Datasheet

MFG:STMicroelectronics Category:Integrated Circuits (ICs) Package Cooled:0546 D/C:09+

L6911ETR, L6916D, L6917 Datasheet download

Five Points

Part Number: L6911ETR

Category: Integrated Circuits (ICs)

MFG: STMicroelectronics

Package Cooled: 0546

D/C: 09+

Description: IC CTRLR 5BIT PROGR STPDN 20SOIC

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L6911ETR Parameters

Technical/Catalog Information	L6911ETR
Vendor	STMicroelectronics
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	5 ~ 12 V
Voltage - Output	Adjustable
Current - Output	1.3A
Power - Output	-
Package / Case	20-SOIC (7.5mm Width)
Packaging	Tape & Reel (TR)
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	-40°C ~ 150°C
Frequency - Switching	200kHz
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	L6911ETR L6911ETR

L6917 General Description

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

The device 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 1.100V to 1.850V with 25mV binary steps.

The high precision internal reference assures the selected output voltage to be within ±0.8%. The high peak current gate drive affords to have fast switching to the external power mos providing low switching losses.

The device 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 or under voltage, the system works in HICCUP mode .

L6917 Maximum Ratings

Symbol	Parameter	Value	Unit
Vcc, V_CCDR	To PGND	15	V
V_BOOT-V_PHASE	Boot Voltage	15	V
V_UGATE1-V_PHASE1 V_UGATE2-V_PHASE2		15	V
	LGATE1, PHASE1, LGATE2, PHASE2 to PGND	-0.3 to Vcc+0.3	V
	All other pins to PGND	-0.3 to 7	V

L6917 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 COMPLIANT WITH VRM 9.0
` 0.8% INTERNAL REFERENCE 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
` 300 kHz INTERNAL OSCILLATOR
` OSCILLATOR EXTERNALLY ADJUSTABLE UP TO 1MHz
` POWER GOOD OUTPUT AND INHIBIT FUNCTION
` REMOTE SENSE BUFFER
` PACKAGE: SO-28

L6917 Typical Application

· POWER SUPPLY FOR SERVER AND WORKSTATION
· POWER SUPPLY FOR HIGH CURRENT MICROPROCESSORS
· DISTRIBUTED POWER SUPPLY

L6917 Connection Diagram

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