Rainbow Electronics MAX6338 - Manual

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
Features
♦ 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
♦ Low 25µA Supply Current
♦ Four Independent, Open-Drain, Active-Low
Outputs
♦ +2.5V to +5.5V Supply Voltage Range
♦ Guaranteed from -40°C to +85°C
♦ No External Components Required
♦ Small 10-Pin µMAX Package
MAX6338
Quad Voltage Monitor in µMAX Package
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
5
10
9
8
7
6
V CC
OUT1
OUT2
OUT3 IN4
IN3
IN2
IN1
MAX6338
µMAX
TOP VIEW
OUT4 GND
Pin Configuration
NOMINAL INPUT VOLTAGE
PART IN1
(V)
IN2
(V)
IN3
(V)
IN4
(V)
SUPPLY
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
19-1695; Rev 1; 7/01
Ordering Information
Selector Guide
PART TEMP. RANGE PIN-PACKAGE
MAX6338_UB* -40 °C to +85°C 10 µMAX
*Insert the desired letter from the Selector Guide into the blank
to complete the part number.
*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
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.