CS235 Datasheet, PDF (2/6 Pages) Cherry Semiconductor Corporation – System Photoelectric Smoke Detector

Absolute Maximum Ratings
Lead Temperature Soldering
Wave Solder (through hole styles only) .....................................................................................10 sec. max, 260¡C peak
Reflow (SMD styles only) ......................................................................................60 sec. max above 183¡C, 230¡C peak
Storage Temperature Range ..................................................................................................................................-65¡C to 150¡C
Electrical Characteristics: T_A = 25¡C, unless otherwise stated.
PARAMETER
TEST CONDITIONS
Absolute Maximum Voltage
Output Latch Current
Operation Temperature
Range, T_A
(pin 3)
MIN
TYP
0
s 24V System (C2 = 100 µF, R7 = 12 M½)
Operating Voltage
(pin 3)
13.8
22.5
Average Supply Current
V (pin 3) = 22.5V
35
Peak Supply Current
V (pin 3) = 22.5V )(non Òspeed upÓ)
Peak Supply Current
V (pin 16) = 12V )(Òspeed upÓ)
150
Regulator Voltage
(pin 16)
12.8
s 12V System (C2 = 150µF, R7 = 12M½)
Operating Voltage
(pin 3)
8.7
Average Supply Current
V (pin 3) = 12V
Peak Supply Current
V (pin 3) = 12V (non Òspeed upÓ)
Peak Supply Current
V (pin 16) = 8V (Òspeed upÓ mode)
Regulator Voltage
(pin 16) (V pin 3 = 12V)
12
11.85
s Oscillator
Output Frequency
Sink Current
Source Current
High Trip Point Voltage
Low Trip Point Voltage
R6 = 18k½, C3 = .0068µF
(pin 14)
(pin 14)
(pin 14)
(pin 14)
2.1
3.3
16
26
19
26
1.8
1.9
1.2
1.4
s LED Drive (Detector LED and Status LED)
Source Current (pin 15)
R8=36½
Detector LED
V IR LED = 1.156V
Status LED (alarm)
V Status LED = 1.99V
Regulator Voltage (pin 15) I_SOURCE = 30mA
s Amplifier A1
Fixed Gain
Input Current B₁
Input Current B₂
Input current (B₁-B₂)
(pin 5)
(pin 6)
20
30
10
3.7
4.4
26
500
500
MAX
38
100
70
UNIT
V
mA
¡C
35
V
60
µA
100
µA
350
µA
15.7
V
V
60
µA
100
µA
350
µA
V
4.4
kHz
35
µA
32
µA
2.2
V
1.5
V
40
mA
mA
5.2
V
dB
1000
nA
1000
nA
250
nA
2