Dual-Voltage Detector. CN303 Datasheet

CN303 Detector. Datasheet pdf. Equivalent


CONSONANCE CN303
CONSONANCE
Low Power, Dual-Voltage Detector
CN303
General Description
The CN303 is a two-channel voltage detector with
2 low power high accuracy comparators, and is
specially designed for monitoring single or multi
lithium-ion (Li+) cells, multi-cell alkaline, NiCd,
NiMH and multi-cell lead acid batteries.
The CN303’s threshold accuracy is ±2%, and
offers 7.5% hysteresis which eliminates the output
chatter sometimes associated with battery voltage
monitors, usually due to input voltage noise or
battery terminal voltage recovery after load
removal. The CN303 has 2 inputs that can be
configured by the external resistor divider. When
the voltage at IN1(IN2) rises above the rising
threshold, OUT1(OUT2) goes high; When the
voltage at IN1(IN2) falls below the falling
threshold, OUT1(OUT2) is driven to low.
The device has a low quiescent current of 11uA
typical, and offers CMOS outputs.
The device is available in 6 pin SOT23 package.
Applications
Battery-powered Systems
Multi-cell Batteries Monitoring
Set-Top Boxes
DSPs, Microcontrollers Applications
Cell Phones and PDAs
Features
Two low power high accuracy comparators
Precise Threshold: ±2%
7.5% Hysteresis to Eliminate the Output
Chatter
CMOS Outputs Can Drive LED or MCU
Interface
11µA Supply Current @VCC=3.7V
Power Supply Transient Immunity
Operating Temperature Range
-40°C to +85°C
Available in SOT23-6
Lead-free, Rohs-compliant and Halogen-free
Pin Assignment
IN1 1
GND 2
OUT1 3
CN303
6 IN2
5 OUT2
4 VCC
www.consonance-elec.com
1
Rev 1.0


CN303 Datasheet
Recommendation CN303 Datasheet
Part CN303
Description Dual-Voltage Detector
Feature CN303; CONSONANCE Low Power, Dual-Voltage Detector CN303 General Description The CN303 is a two-channel .
Manufacture CONSONANCE
Datasheet
Download CN303 Datasheet




CONSONANCE CN303
CONSONANCE
Typical Application Circuit
VBAT
4
R1 VCC
1 IN1
OUT1 3
R3 CN303
6 IN2
OUT2 5
R2 GND
2
Figure 1 Monitoring Two Voltage Levels
VBAT1
R1
R2
VBAT2
R3
1.9V to 6V
4
VCC
1 IN1
OUT1 3
CN303
6 IN2
OUT2 5
R4 GND
2
Figure 2 Monitoring Two Independent Voltages
Ordering Information
Part No.
CN303
Package
Shipping
Operating Temperature Range
SOT23-6 Tape and Reel, 3000/Reel
40to 85
www.consonance-elec.com
2
Rev 1.0



CONSONANCE CN303
CONSONANCE
Block Diagram
Figure 3 Block Diagram
Pin Description
Pin No.
Symbol
1 IN1
2 GND
3 OUT1
4 VCC
5 OUT2
6 IN2
Description
Voltage Detect Input 1. Generally IN1 pin should be tied to an
external resistor divider to sense the voltage being monitored.
Negative Terminal of Power Supply(Ground)
Voltage Detect Output 1. CMOS output. When the voltage at
IN1 pin rises above the internal reference voltage, OUT1 becomes
high; When the voltage at IN1 pin falls below the internal
reference voltage by 7.5%(typical), OUT1 becomes low.
Positive Terminal of Power Supply. This pin is the power supply
to internal circuit.
Voltage Detect Output 2. CMOS output. When the voltage at
IN2 pin rises above the internal reference voltage, OUT2 becomes
high; When the voltage at IN2 pin falls below the internal
reference voltage by 7.5%(typical), OUT2 becomes low.
Voltage Detect Input 2. Generally IN2 pin should be tied to an
external resistor divider to sense the voltage being monitored.
www.consonance-elec.com
3
Rev 1.0







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