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ISL8724 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL8724
部品説明 (ISL8723 / ISL8724) Power Sequencing Controllers
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 



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ISL8724 Datasheet, ISL8724 PDF,ピン配置, 機能
®
Data Sheet
ISL8723, ISL8724
December 21, 2006
FN6413.0
Power Sequencing Controllers
The Intersil ISL8723 and ISL8724 are 4 channel sequencers
controlling the on and off sequence of voltages with under
voltage supply fault protection and a “sequence completed”
signal (RESET#). For larger systems, more than 4 voltages
can be sequenced by a simple connection of multiple IC's.
These sequencers use an integrated charge pump to drive 4
external low-cost N-channel MOSFET switch gates above
the IC bias voltage by 5.3V. These IC's can be biased from
and control any supply from 2.5V to 5V and additionally
monitor any voltage above 0.7V. Individual product
descriptions are below.
The four channel ISL8723 (ENABLE input), ISL8724
(ENABLE# input) offer the designer 4 voltage control when it
is required that all four rails are in minimal compliance prior
to turn on and that compliance must be maintained during
operation. The ISL8723 has a low power standby mode
when it is disabled suitable for battery powered applications.
External resistors provide flexible voltage threshold
programming of monitored voltages. Delay and sequencing
timing are programmable by external capacitors for both
ramp up and ramp down.
Ordering Information
PART NUMBER
TEMP.
PART RANGE
MARKING (°C)
PKG.
PACKAGE DWG. #
ISL8723IRZ (Note) 8723IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4
ISL8724IRZ (Note) 8724IRZ
(Pb-free)
L24.4x4
ISL8723IRZ-T (Note) 8723IRZ
ISL8724IRZ-T (Note) 8724IRZ
-40 to +85 24 Ld 4x4 QFN L24.4x4
(Pb-free)
L24.4x4
Tape & Reel
ISL8723EVAL1
Evaluation Platform
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible with
both SnPb and Pb-free soldering operations. Intersil Pb-free products are
MSL classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J STD-020.
Features
• Enables arbitrary turn-on and turn-off sequencing of up to
four power supplies (0.7V to 5V)
• Operates from 2.5V to 5V supply voltage
• Supplies VDD +5.3V of charge pumped gate drive
• Adjustable voltage slew rate for each rail
• Multiple sequencers can be easily daisy-chained to
sequence an infinite number of independent voltages
• Glitch immunity
• Under voltage lockout for each monitored supply voltage
• 30µA Sleep State (ISL8723)
• Active high (ISL8723) or low (ISL8724) ENABLE# input
• Pb-free plus anneal available (RoHS compliant) QFN
Package
Applications
• Graphics cards
• FPGA/ASIC/microprocessor/PowerPC supply sequencing
• Network Routers
• Telecommunications Systems
Pinout
ISL8723, ISL8724
(24 LD QFN)
TOP VIEW
24 23 22 21 20 19
ENABLE/
ENABLE# 1
18 DLY_OFF_A
GATE_A 2
17 UVLO_C
DLY_OFF_C 3
DLY_OFF_D 4
4mmx4mm
16 DLY_ON_C
15 DLY_ON_D
GATE_B 5
14 UVLO_D
GATE_C 6
13 DLY_OFF_B
7 8 9 10 11 12
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

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