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MC34164_09 Datasheet, PDF (1/12 Pages) ON Semiconductor – Micropower Undervoltage Sensing Circuits | |||
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MC34164, MC33164,
NCV33164
Micropower Undervoltage
Sensing Circuits
The MC34164 series are undervoltage sensing circuits specifically
designed for use as reset controllers in portable microprocessor based
systems where extended battery life is required. These devices offer
the designer an economical solution for low voltage detection with a
single external resistor. The MC34164 series features a bandgap
reference, a comparator with precise thresholds and builtâin hysteresis
to prevent erratic reset operation, an open collector reset output
capable of sinking in excess of 6.0 mA, and guaranteed operation
down to 1.0 V input with extremely low standby current. The MC
devices are packaged in 3âpin TOâ92 (TOâ226AA), micro size
TSOPâ5, 8âpin SOICâ8 and Micro8⢠surface mount packages. The
NCV device is packaged in SOICâ8.
Applications include direct monitoring of the 3.0 V or 5.0 V
MPU/logic power supply used in appliance, automotive, consumer,
and industrial equipment.
Features
⢠Temperature Compensated Reference
⢠Monitors 3.0 V (MC34164â3) or 5.0 V (MC34164â5) Power Supplies
⢠Precise Comparator Thresholds Guaranteed Over Temperature
⢠Comparator Hysteresis Prevents Erratic Reset
⢠Reset Output Capable of Sinking in Excess of 6.0 mA
⢠Internal Clamp Diode for Discharging Delay Capacitor
⢠Guaranteed Reset Operation With 1.0 V Input
⢠Extremely Low Standby Current: As Low as 9.0 mA
⢠Economical TOâ92 (TOâ226AA), TSOPâ5, SOICâ8 and Micro8
Surface Mount Packages
⢠NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
⢠PbâFree Packages are Available
Input
Reset
http://onsemi.com
123
STRAIGHT LEAD
BULK PACK
1
2
3
BENT LEAD
TAPE & REEL
AMMO PACK
TOâ92 (TOâ226AA)
P SUFFIX
CASE 29
5
1
TSOPâ5
SN SUFFIX
CASE 483
8
1
SOICâ8
D SUFFIX
CASE 751
8
1
Micro8
DM SUFFIX
CASE 846A
PIN CONNECTIONS
Reset 1
Input 2
N.C. 3
Ground 4
8 N.C.
7 N.C.
6 N.C.
5 N.C.
(Top View)
TSOPâ5
Pin 1. Ground
2. Input
3. Reset
4. NC
5. NC
TOâ92
Pin 1. Reset
2. Input
3. Ground
1.2 Vref
GND
Figure 1. Representative Block Diagram
This device contains 28 active transistors.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
=
Sink Only
Positive True Logic
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2009
1
April, 2009 â Rev. 18
Publication Order Number:
MC34164/D
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