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 built−in 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 3−pin TO−92 (TO−226AA), micro size
TSOP−5, 8−pin SOIC−8 and Micro8™ surface mount packages. The
NCV device is packaged in SOIC−8.
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
http://onsemi.com
3
STRAIGHT LEAD
BULK PACK
12
1
3
BENT LEAD
TAPE & REEL
AMMO PACK
2
TO−92 (TO−226AA)
P SUFFIX
CASE 29
•
•
•
•
•
•
•
•
•
Temperature Compensated Reference
Monitors 3.0 V (MC34164−3) or 5.0 V (MC34164−5) 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 TO−92 (TO−226AA), TSOP−5, SOIC−8 and Micro8
Surface Mount Packages
•
NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
•
Pb−Free Packages are Available
Input
Reset
5
1
TSOP−5
SN SUFFIX
CASE 483
8
8
1
1
SOIC−8
D SUFFIX
CASE 751
Micro8
DM SUFFIX
CASE 846A
PIN CONNECTIONS
Reset 1
Input 2
N.C. 3
Ground 4
(Top View)
8 N.C.
7 N.C.
6 N.C.
5 N.C.
TSOP−5
Pin 1.
2.
3.
4.
5.
Ground
Input
Reset
NC
NC
TO−92
Pin 1. Reset
2. Input
3. Ground
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
1.2 V
ref
= Sink Only
Positive True Logic
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
GND
Figure 1. Representative Block Diagram
This device contains 28 active transistors.
©
Semiconductor Components Industries, LLC, 2009
April, 2009
−
Rev. 18
1
Publication Order Number:
MC34164/D
ONSEMI [ ON SEMICONDUCTOR ]
