NCP304_06 Datasheet, PDF (1/23 Pages) ON Semiconductor – Voltage Detector Series

NCP304, NCP305
Voltage Detector Series
The NCP304 and NCP305 series are second generation ultra−low
current voltage detectors. These devices are specifically designed for
use as reset controllers in portable microprocessor based systems
where extended battery life is paramount.
Each series features a highly accurate undervoltage detector with
hysteresis which prevents erratic system reset operation as the
comparator threshold is crossed.
The NCP304 series consists of complementary output devices that
are available with either an active high or active low reset output. The
NCP305 series has an open drain N−Channel output with an active low
reset output.
The NCP304 and NCP305 device series are available in the
SC−82AB package with standard undervoltage thresholds. Additional
thresholds that range from 0.9 V to 4.9 V in 100 mV steps can
be manufactured.
Features
• Quiescent Current of 1.0 mA Typical
• High Accuracy Undervoltage Threshold of 2.0%
• Wide Operating Voltage Range of 0.8 V to 10 V
• Complementary or Open Drain Reset Output
• Active Low or Active High Reset Output
• Pb−Free Packages are Available
Typical Applications
• Microprocessor Reset Controller
• Low Battery Detection
• Power Fail Indicator
• Battery Backup Detection
http://onsemi.com
4
1
SC−82AB
SQ SUFFIX
CASE 419C
PIN CONNECTIONS AND
MARKING DIAGRAM
GND ₄
3 ^N.C.
xxx M G
G
Reset ¹
2 _Vin
Output
(Top View)
xxx = Specific Device Code
M
= Date Code
G
= Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the ordering
information section on page 19 of this data sheet.
NCP304xSQxxT1
Complementary Output Configuration
2
Input
*
V_ref
1
Reset Output
4
GND
NCP305LSQxxT1
Open Drain Output Configuration
2
Input
1
Reset Output
V_ref
4
GND
This device contains 38 active transistors.
This device contains 37 active transistors.
* The representative block diagram depicts active low reset output ‘L’ suffix devices. The comparator
input is interchanged for the active high output ‘H’ suffix devices.
Figure 1. Representative Block Diagrams
© Semiconductor Components Industries, LLC, 2006
1
May, 2006 − Rev. 18
Publication Order Number:
NCP304/D