MAX6338 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Quad Voltage Monitor in μMAX Package

19-1695; Rev 1; 7/01
Quad Voltage Monitor in µMAX Package
General Description
The MAX6338 quad voltage monitor is capable of moni-
toring up to four supplies without any external compo-
nents. A variety of factory-trimmed threshold voltages
and supply tolerances are available to optimize the
MAX6338 for specific applications. The selection
includes input options for monitoring +5.0V, +3.3V,
+3.0V, +2.5V, +1.8V, and -5.0V voltages. An additional
high-input impedance comparator option can be used
as an adjustable voltage monitor, general-purpose com-
parator, or digital level translator.
Each of the monitored voltages is available with trip
thresholds to support power-supply tolerances of either
5% or 10% below the nominal voltage. An internal
bandgap reference ensures accurate trip thresholds
across the extended (-40°C to +85°C) operating temper-
ature range.
The MAX6338 consumes 25µA (typ) supply current and
operates with supply voltages from +2.5V to +5.5V. An
internal undervoltage lockout circuit forces all four digital
outputs low when V_CC drops below the minimum operat-
ing voltage. The four digital outputs all have weak inter-
nal pull-ups to V_CC, allowing wire-ORed connection.
Each input threshold voltage has an independent output.
The MAX6338 is available in a 10-pin µMAX package.
________________________Applications
Telecommunications
High-End Printers
Desktop and Notebook Computers
Data Storage Equipment
Networking Equipment
Industrial Equipment
Set-Top Boxes
Pin Configuration
TOP VIEW
IN1 1
IN2 2
IN3 3
IN4 4
GND 5
MAX6338
µMAX
10 V_CC
9 OUT1
8 OUT2
7 OUT3
6 OUT4
Features
o Monitors Four Voltages (Factory Programmed or
User Adjustable)
+5.0V, +3.3V, +3.0V, +2.5V, +1.8V, -5.0V
(nominal) or User-Adjustable Settings
o Low 25µA Supply Current
o Four Independent, Open-Drain, Active-Low
Outputs
o +2.5V to +5.5V Supply Voltage Range
o Guaranteed from -40°C to +85°C
o No External Components Required
o Small 10-Pin µMAX Package
Ordering Information
PART
MAX6338_UB*
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
10 µMAX
*Insert the desired letter from the Selector Guide into the blank
to complete the part number.
Selector Guide
NOMINAL INPUT VOLTAGE
PART
IN1 IN2 IN3 IN4
SUPPLY
(V)
(V)
(V)
(V)
TOLERANCE
(%)
MAX6338AUB 5 3.3 2.5 Adj*
10
MAX6338BUB 5 3.3 2.5† Adj*
5
MAX6338CUB 5 3.3 1.8 Adj*
10
MAX6338DUB 5 3.3 1.8† Adj*
5
MAX6338EUB 5 3.0 2.5 Adj*
10
MAX6338FUB 5 3.0 2.5† Adj*
5
MAX6338GUB 5 3.0 1.8 Adj*
10
MAX6338HUB 5 3.0 1.8† Adj*
5
MAX6338IUB 5 3.3 2.5 1.8
10
MAX6338JUB 5 3.3 2.5† 1.8†
5
MAX6338KUB Adj* 3.3 2.5 Adj*
10
MAX6338LUB Adj* 3.3 2.5† Adj*
5
MAX6338MUB 5 3.0 Adj* -5
10
MAX6338NUB 5 3.0 Adj* -5
5
MAX6338OUB 5 3.3 Adj* -5
10
MAX6338PUB 5 3.3 Adj* -5
5
*Adjustable voltage based on +1.23V internal threshold. External
threshold voltage can be set using an external resistor-divider.
† Nominal input voltages for 1.8V and 2.5V are specified for 10%
tolerances
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