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MAX16002

Description
Low-Voltage, Quad-/Hex-/Octal-Voltage レP Supervisors
File Size272KB,26 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet View All

MAX16002 Overview

Low-Voltage, Quad-/Hex-/Octal-Voltage レP Supervisors

19-3870; Rev 3; 12/08
Low-Voltage, Quad-/Hex-/Octal-Voltage
µP Supervisors
General Description
The MAX16000–MAX16007 are low-voltage, quad-/hex-/
octal-voltage µP supervisors in small thin QFN and TSSOP
packages. These devices provide supervisory functions for
complex multivoltage systems. The MAX16000/
MAX16001/MAX16002 monitor four voltages, the
MAX16003/MAX16004/MAX16005 monitor six voltages,
and the MAX16006/MAX16007 monitor eight voltages.
The MAX16000/MAX16001/MAX16003/MAX16004/
MAX16006 offer independent outputs for each moni-
tored voltage. The MAX16001/MAX16002/MAX16004–
MAX16007 offer a reset output that asserts whenever
any of the monitored voltages fall below their respective
thresholds or the manual reset input is asserted. The
reset output remains asserted for the reset timeout after
all voltages are above their respective thresholds and
the manual reset input is deasserted. The minimum
reset timeout is internally set to 140ms or can be adjust-
ed with an external capacitor.
All open-drain outputs have internal 30µA pullups that
eliminate the need for external pullup resistors.
However, each output can be driven with an external
voltage up to 5.5V. Other features offered include a
manual reset input, a tolerance pin for selecting 5% or
10% input thresholds, and a margin enable function for
deasserting the outputs during margin testing.
The MAX16001/MAX16002/MAX16004–MAX16007 offer
a watchdog timer that asserts
RESET
or an indepen-
dent watchdog output (MAX16005) when the watchdog
timeout period (1.6s typ) is exceeded. The watchdog
timer can be disabled by floating the input.
These devices are offered in 12-, 16-, 20-, and 24-lead
thin QFN and 16-lead TSSOP packages. These are fully
specified from -40°C to +125°C.
Features
o
Fixed Thresholds for 5V, 3.3V, 3V, 2.5V, 1.8V,
1.5V, 1.2V, and 0.9V Systems
o
Adjustable Thresholds Monitor Voltages Down to
0.4V
o
Open-Drain Outputs with Internal Pullups Reduce
the Number of External Components
o
Fixed 140ms (min) or Capacitor-Adjustable Reset
Timeout
o
Manual Reset, Margin Enable, and Tolerance
Select Inputs
o
Watchdog Timer
1.6s (typ) Timeout Period
54s Startup Delay After Reset (Except MAX16005)
o
Independent Watchdog Output (MAX16005)
o
RESET
Output Indicates All Voltages Present
o
Independent Voltage Monitors
o
Guaranteed Correct Logic State Down to V
CC
= 1V
o
Small (4mm x 4mm) Thin QFN Package
o
TSSOP (5mm x 4.4mm) Package (MAX16005)
MAX16000–MAX16007
Ordering Information
PART
MAX16000_TC+
TEMP RANGE
-40°C to +125°C
PIN-PACKAGE
12 TQFN-EP*
Note: The “_” is a placeholder for the input voltage threshold.
See Table 1.
+Denotes
lead(Pb)-free/RoHS-compliant package.
For tape-and-reel, add a “T” after the “+.” Tape-and-reel are
offered in 2.5k increments.
*EP
= Exposed pad.
Ordering Information continued at end of data sheet.
Typical Operating Circuit
Applications
Storage Equipment
Servers
Networking/Telecommunication Equipment
Multivoltage ASICs
V
CC
V
IN1
V
IN2
V
IN3
V
IN4
V
IN5
V
IN6
IN1
IN2
IN3
IN4
IN5
IN6
MR
MAX16005
RESET
WDI
WDO
RST
I/O
NMI
µP
SRT
MARGIN
Selector Guide appears at end of data sheet.
GND
TOL
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
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