LX6433 Datasheet, PDF (1/6 Pages) Microsemi Corporation – TM Precision Voltage Monitor

LX6433
®
TM
Precision Voltage Monitor
PRODUCTION DATA SHEET
DESCRIPTION
The LX6433 is a precise voltage
monitor programmed to signal a low
supply line condition. VMON is
connected to the “monitored” supply
line, when VMON drops below the
threshold of 1.085V, RESET line
goes low. When power is restored
and VMON moves above the
threshold voltage, RESET remains
low for an additional 100ms to ensure
system reset is fully applied.
Digital filtering inside the LX6433
ignores temporary dips in the VMON
line lasting for less than 10µS to
avoid false triggering.
The monitor operates over a supply
range (VIN) of 3V to 6V. The RESET
line is capable of sinking an output
load current of 1mA. This line is
protected from short circuit to VIN or
Ground without damage.
Tight threshold detection allows for a
1.085V to 1.125V window over
temperature. System efficiency is
maintained with ultra low IQ of 20µA.
The 5 pin SOT-23 package provides
a small form factor similar to industry
standard device types in this category.
This package is RoHS compliant
allowing Pb free PCB assembly.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATURES
ƒ Precise Threshold Detection
1.105V ±0.02V
ƒ 3V to 6.0V Operating Range
ƒ Active Low RESET, Sink
Current > 1mA
ƒ RESET Pulse Duration
Controlled, typical 100mS
ƒ Quiescent Current < 40μA
ƒ Wide Temperature: 0-85°C
ƒ No External Components
Required
ƒ SOT-23, 5-Pin Package, RoHS
Compliant (Pb-Free)
ƒ Similar Devices: FM803,
NCP803 and LM3724
APPLICATIONS/BENEFITS
ƒ Portable Microprocessor Core
Voltage Supply Monitor
ƒ Supply Monitoring: 1.2V, 2.5V,
3.3V, 5V or any other level.
3.3 to 5V
PRODUCT HIGHLIGHT
LX6433CSE
1.2V Supply
Microprocessor / ASIC
VIN VMON
RESET
GND
R Pull-up
(Optional)
VCC
Reset
Ground
Figure 1 – LX6433 Typical Application Circuit
T_A(°C)
0 to 85
PACKAGE ORDER INFORMATION
Supply
Voltage (VIN)
Fault Detection
Threshold Voltage
Plastic SOT-23
SE 5-PIN (Pb Free)
RoHS Compliant / Pb-free
3 to 6V
1.105V +/-1.8%
LX6433CSE
Device Marking
2975
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX6433CSE-TR)
Copyright © 2003
Rev. 1.1, 2009-02-11
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
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