Double Flasher
Description
U880B
Double Flasher
Description
The bipolar circuit, U880B, is designed as a double flasher for wide range of applications.
It has polarity and short-circuit protected stages for timely coupled outputs.
Features
D Integrated oscillator D fnominal = 3.
3 Hz D Supply voltage range: 4.
75 to 20.
4 V D Polarity protected D Two protected power stages D Output current, 55 mA nominal
Case: TO 50
+V S
Applications
D Toys D Roboter D LED switching
4 Oscillator T frequency R divider 3 Q2
Supply Limitation
V – On R R Output logic 1 Temperature protection Q1
2
95 9962
–VS Figure 1.
Block diagram with application
Pin Description
Pin Pin 1 Pin 3 Symbol O1 O2 Function Output O1 Output O2 Pin Pin 2 Pin 4 Symbol –VS VS Function Supply, GND Supply
TELEFUNKEN Semiconductors Rev.
A1, 22-Apr-96
1 (4)
U880B
Absolute Maximum Ratings
Reference point Pin 2, unless otherwise specified Parameters Supply current Peak supply current t ≤ 10 ms Supply voltage Output stage Peak current t ≤ 1 ms; Ptot ≤ 200 mW Power dissipation Tamb = 45 °C Tamb = 100 °C Storage temperature range Ambient temperature range Tstg Tamb Pin 4 Pin 4 Pin 4 Pin 1, 3 Pin 1, 3 Symbol IS IS ±VS VO IO –IO Ptot Value 30 150 20.
4 20.
4 100 150 200 80 –40 to +125 –10 to +100 °C °C Unit mA mA V V mA mW
Electrical Characteristics
Reference point Pin 2, VS = 9, Tamb = 25 °C, unless otherwise specified Parameters Supply current Test Conditions / Pin Pin 4 V4 min = 4.
75 V V4 = 9.
0 V V4 max = 20.
4 V I4 = 10 mA Pin 4 Pin 4 Symbol IS Min Typ 3.
2 3.
3 3.
8 20.
8 4.
2 3.
0 3.
8 0.
025 2.
0 0.
025 0.
5 1.
0 250 35 20.
4 –1.
1 130 145 55 50 0.
5 700 80 mV mA %/K V Max 4.
9 5.
0 6.
5 24.
2 4.
75 Unit mA
Supply voltage limitation Voltage monitoring ON–Threshold OFF–Threshold Output stage Temperature coefficient Oscillator Clock frequency Temperature coefficient Voltage coefficient Output stage Saturation voltage Current limitation Temperature coefficient Voltage limitation Leakage current Over temperature limitati tion
V4 V4 V4 V4 TC
V V V V %/K Hz %...
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