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ES1021QI Datasheet(PDF) 1 Page - Altera Corporation |
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ES1021QI Datasheet(HTML) 1 Page - Altera Corporation |
1 / 14 page July 2014 Altera Corporation © 2014 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, HARDCOPY, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html. Altera warrants performance of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device specifications before relying on any published information and before placing orders for products or services. 101 Innovation Drive San Jose, CA 95134 www.altera.com Subscribe ISO 9001:2008 Registered ES1021QI Datasheet The Altera Enpirion ES1021QI is an integrated 4-channel controlled-on/controlled-off power-supply sequencer with supply monitoring, fault protection and a “sequence completed” signal (RESET). ES1021QI uses a patented, micropower 7x charge pump to drive four external low- cost NFET switch gates above the supply rail by 5.3V. These ICs can be biased from 5V down to 1.5V by any supply. ES1021QI has two groups of two channels, each with its independent I/O. It is ideal for voltage sequencing into redundant capability loads. All four inputs must be satisfied before turn-on, but a single group fault is ignored by the other group. External resistors provide flexible voltage threshold programming of monitored rail voltages. Delay and sequencing are provided by external capacitors for ramp-up and ramp-down. Additional I/O is provided for indicating and driving the RESET state in various configurations. For volume applications, other programmable options and features are available. Features • Enables Arbitrary Turn-on and Turn-off Sequencing of Up to Four Power Supplies (0.7V to 5V) • Operates From 1.5V to 5V Supply Voltage • Supplies VDD +5.3V of Charge Pumped Gate Drive • Adjustable Voltage Slew Rate for Each Rail • Multiple Sequencers Can be Daisy-Chained to Sequence an Infinite Number of Independent Supplies • Glitch Immunity • Undervoltage Lockout for Each Supply • Active Low ENABLE Input • Dual Channel Groupings • QFN Package • Pb-free (RoHS-compliant) Applications •Graphics Cards • FPGA/ASIC/Microprocessor/PowerPC Supply Sequencing •Network Routers • Telecommunications Systems FIGURE 1. TYPICAL ES1021QI APPLICATION V1OUT V2OUT V3OUT V4OUT UVLO_B UVLO_A UVLO_D UVLO_C V1 V2 V3 V4 ENABLE_1 ENABLE_2 GROUND RESET VDD RESET_2 FIGURE 2. ES1021QI GROUP INDEPENDENT TURN-OFF AND DELAY ADJUSTABLE PRE-PROGRAMMED TURN-ON B_VOUT C_VOUT D_VOUT A_VOUT EN_2 5V/DIV EN_1 5V/DIV Enpirion® Power Datasheet ES1021QI Power Sequencing Controller 10128 July 9, 2014 Rev A |
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