Quick Detail:
Quad Voltage μP Supervisory Circuit in SOT Package
Description:
The MAX6339 is a precision quad voltage monitor with microprocessor (µP) 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 available to accommodate different supply voltages and tolerances with minimal external component requirements.
The selection includes internally fixed options for monitoring +5.0V, +3.3V, +3.0V, +2.5V, +1.8V, and -5.0V supplies 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 external resistor-divider network).
The quad monitor provides a single active-low reset output that is asserted when any monitored input is below its associated threshold. The output is open drain with a weak internal pull-up (10µA) 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 package and operates over the extended (-40°C to +85°C) temperature range.
Applications:
♦ 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 55µA Supply Current
♦ Open-Drain RESET Output with 10µA 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
Specifications:
Datasheets |
MAX6339 |
Product Photos |
SOT-23-6 |
Product Training Modules |
Lead (SnPb) Finish for COTS |
Standard Package |
2,500 |
Category |
Integrated Circuits (ICs) |
Family |
PMIC - Supervisors |
Series |
- |
Tape & Reel (TR) |
|
Type |
Multi-Voltage Supervisor |
Number of Voltages Monitored |
4 |
Output |
Open Drain or Open Collector |
Reset |
Active Low |
Reset Timeout |
140 ms Minimum |
Voltage - Threshold |
3.08V, 4.63V, Adj, -4.63V |
Operating Temperature |
-40°C ~ 85°C |
Mounting Type |
Surface Mount |
Package / Case |
SOT-23-6 |
Supplier Device Package |
SOT-23-6 |
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