ELM77 Datasheet, PDF (1/10 Pages) ELM Electronics – CMOS Dual voltage detector

ELM77xxxxxC CMOS Dual voltage detector
http://www.elm-tech.com
■General description
ELM77xxxxxC is a CMOS dual voltage detector which consists of two comparator circuits watching Vdetn2
(Vdd level) and Vdetn1(Vdet input level) simultaneously and independently. This configuration enables output
to maintain the state of detection even when voltage of the Vdet input level drops to 0V.
■Features
• Detection voltage range : Vdetn1 (Vdet) 0.8V to 5.0V (by 0.1V)
Vdetn2 (Vdd) 1.1V to 5.0V (by 0.1V)
• Low current consumption : Typ.0.6μA(Vdd=3.0V)
• High accuracy of
: ±2.0%(Vdetn1, 2>1.5V)
detection voltage
: ±30mV(Vdetn1, 2≤1.5V)
• High input resistance
: Typ.10MΩ
• Low temperature coefficient : Typ. ±100ppm/°C
• Output configuration
: N-ch open-drain
• Small package
: SOT-25
■Application
• Reset for microcomputers
• Power voltage shortage detectors
• Switch of backup power source
• Battery checkers
■Maximum absolute ratings
Parameter
Symbol
Limit
Unit
Power supply voltage
Vdd
Vss-0.3 to 10.0
V
Input voltage(for detection voltage)
Vdet
Vss-0.3 to 10.0
V
Output voltage
Vout1
Vout2
Vss-0.3 to 10.0
V
Output current
Iout1
Iout2
25
mA
Power dissipation
Pd
250
mW
Operationg temperature
Top
-40 to +85
°C
Storage temperature
Tstg
-55 to +125
°C
■Selection guide
ELM77xxxxBC-x
Symbol
a, b
Detection voltage2
c, d
Detection voltage1
e
package
f
Product version
g
Taping direction
e.g.)
22: Vdetn2=2.2V, 24: Vdetn2=2.4V
27: Vdetn2=2.7V
e.g.)
09: Vdetn1=0.9V, 11: Vdetn1=1.1V
B : SOT-25
C
S : Refer to PKG file
N : Refer to PKG file
ELM77 x x x x B C - x
↑↑↑↑↑ ↑ ↑
a b c d ef g
10 - 1
Rev.1.1