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| 型號(hào)： | MAX6339PUT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Analog IC |
| 中文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封裝： | MO-178AB, SOT-23, 6 PIN |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大小： | 283K |
| 代理商： | MAX6339PUT-T |
General Description
The MAX6339 is a precision quad voltage monitor with
microprocessor (P) supervisory reset timing. The device
can monitor up to four system supply voltages without
any external components and asserts a single reset if any
supply voltage drops below its preset threshold. The
device significantly reduces system size and component
count while improving reliability compared to separate
ICs or discrete components.
A variety of factory-trimmed threshold voltages are avail-
able to accommodate different supply voltages and toler-
ances with minimal external component requirements.
The selection includes internally fixed options for monitor-
ing +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V sup-
plies with -5% and/or -10% tolerances. The device is also
available with one or two user-adjustable threshold
options if non-standard thresholds are desired (use exter-
nal resistor-divider network).
The quad monitor provides a single active-low reset out-
put that is asserted when any monitored input is below its
associated threshold. The output is open drain with a
weak internal pullup (10A) to IN2. Reset remains low for
a reset timeout period (140ms min) after all voltages are
above the selected thresholds. The output is valid as long
as either the IN1 or IN2 input voltage remains > 1V.
The MAX6339 is available in a small 6-pin SOT23 pack-
age and operates over the extended (-40°C to +85°C)
temperature range.
________________________Applications
Telecommunications
High-End Printers
Desktop and Network Computers
Data Storage Equipment
Networking Equipment
Industrial Equipment
Set-Top Boxes
Features
Monitors Four Power-Supply Voltages
Precision Factory-Set Reset Threshold Options
for +5.0V, +3.3V, +3.0, +2.5V, +1.8V, and -5.0V
Supplies
User-Adjustable Voltage Monitoring Threshold
Options
Low 55A Supply Current
Open-Drain RESET Output with 10A Internal
Pullup
140ms (min) Reset Timeout Period
RESET Valid to IN1 = 1V or IN2 = 1V
Immune to Short Monitored Supply Transients
No External Components Required
Guaranteed from -40°C to +85°C
Small 6-Pin SOT23 Package
MAX6339
Quad Voltage P Supervisory Circuit
in SOT Package
________________________________________________________________ Maxim Integrated Products
1
19-1756; Rev 3; 12/05
Ordering Information
*Insert the desired letter from the Selector Guide into the blank
to complete the part number. There is a 2500 piece minimum
order increment requirement on the SOT package and these
devices are available in tape-and-reel only.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Pin Configuration appears at end of data sheet.
PART
TEMP. RANGE
PIN-PACKAGE
MAX6339_UT-T*
-40
°C TO +85°C
6 SOT23-6
MAX6339
IN1
IN2
IN3
IN4
RESET
GND
SUPPLIES
TO BE
MONITORED
P
Typical Operating Circuit
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.
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