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| 型号： | ISL870XEVAL1 |
| 厂商： | Intersil |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD 1 FOR ISL870X |
| 标准包装： | 1 |
| 系列： | * |
?
ISL8700, ISL8701, ISL8702
Data Sheet
March 21, 2008
FN9250.2
Adjustable Quad Sequencer
The ISL8700, ISL8701, ISL8702 family of ICs provide four
delay adjustable sequenced outputs while monitoring an
input voltage all with a minimum of external components.
High performance DSP, FPGA, μP and various subsystems
require input power sequencing for proper functionality at
initial power-up and the ISL870x provides this function while
monitoring the distributed voltage for over and undervoltage
compliance.
The ISL8700 and ISL8701 operate over the +2.5V to +24V
nominal voltage range, whereas the ISL8702 operates over
the +2.5V to +12V nominal voltage range. All three have a
user adjustable time from UV and OV voltage compliance to
sequencing start via an external capacitor when in auto start
mode and adjustable time delay to subsequent ENABLE
output signal via external resistors.
Additionally, the ISL8702 provides an input for sequencing
on and off operation (SEQ_EN) and for voltage window
compliance reporting (FAULT) over the +2.5V to +12V
voltage range.
Features
? Adjustable Delay to Subsequent Enable Signal
? Adjustable Delay to Sequence Auto Start
? Adjustable Distributed Voltage Monitoring
? Undervoltage and Overvoltage Adjustable Delay to Auto
Start Sequence
? I/O Options
ENABLE (ISL8700, ISL8702) and ENABLE# (ISL8701)
SEQ_EN (ISL8702)
? Voltage Compliance Fault Output
? Pb-Free (RoHS Compliant)
Applications
? Power Supply Sequencing
? System Timing Function
2.5V TO 24V (2.5V TO 12V FOR ISL8702)
Easily daisy chained for more than 4 sequenced signals.
EN
DC/DC
Vo1
Altogether, the ISL870x provides these adjustable features
Ru
VIN
ENABLE_A
with a minimum of external BOM. See Figure 1 for typical
implementation.
SEQ_EN*
UV
ENABLE_B
ENABLE_C
ENABLE_D
EN
DC/DC
Vo2
Ordering Information
PART NUMBER PART
TEMP.
PACKAGE
PKG.
Rm
OV FAULT*
GND TB TC TD TIME
EN
DC/DC
Vo3
(Note)
MARKING RANGE (°C)
(Pb-free)
DWG. #
Rl
ISL8700IBZ*
ISL8701IBZ*
ISL8702IBZ*
ISL 8700IBZ
ISL 8701IBZ
ISL 8702IBZ
-40 to +85
-40 to +85
-40 to +85
14 Ld SOIC M14.15
14 Ld SOIC M14.15
14 Ld SOIC M14.15
EN
DC/DC
Vo4
ISL870xEVAL1
Evaluation Platform
* SEQ_EN and FAULT are not available on ISL8700 and ISL8701
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets; molding compounds/die attach
materials and 100% matte tin plate PLUS ANNEAL - e3 termination
finish, which is 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.
FIGURE 1. ISL870x IMPLEMENTATION
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, 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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