TC1044 TELCOM [TelCom Semiconductor, Inc], TC1044 Datasheet
TC1044
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TC1044 Summary of contents
Page 1
... Frequency is increased to 45kHz when pin 1 is connected to V current applications) is possible by connecting an external capacitor from OSC to ground (with pin 1 open). to 45kHz The TC1044S is available in both 8-pin DIP and 8-pin small outline (SOIC) packages in commercial and extended temperature ranges. ORDERING INFORMATION Part No. ...
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... OUT FF Z Oscillator Impedance OSC NOTES: 1. Connecting any input terminal to voltages greater than V inputs from sources operating from external supplies be applied prior to "power up" of the TC1044S. 2. Derate linearly above 5.5mW/ C. 4-44 Package Power Dissipation (T 8-Pin CerDIP ..................................................800mW 8-Pin Plastic DIP ............................................. 730mW 8-Pin SOIC ...
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... Failure to accomplish this will result in high power losses and probable device latch-up. This problem is eliminated in the TC1044S by a logic network which senses the output voltage (V with the level translators, and switches the substrates of S and S ...
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... The output characteristics of the circuit in Figure 3 are those of a nearly ideal voltage source in series with 70 . Thus, for a load current of –10mA and a supply voltage of +5V, the output voltage would be – 4.3V. The dynamic output impedance of the TC1044S is due, primarily, to capacitive reactance of the charge transfer + supply for voltages ...
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... Output transitions occur on the positive-going edge of the clock also possible to increase the conversion efficiency of the TC1044S at low load levels by lowering the oscillator frequency. This reduces the switching losses, and is achieved by connecting an additional capacitor, C Figure 7. Lowering the oscillator frequency will cause an ...
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... Figure 10 shows a TC1044S transforming –5V to +5V (or +5V to +10V, etc.). The only problem here is that the internal clock and switch- drive section will not operate until some positive voltage has been generated ...
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... IN 101.0 100.5 100 12V IN 99.5 99 100 1 TC1044S + 50 µ TC1044S 100 µF k 100 µF Figure 11. Splitting a Supply in Half with Boost Pin = 12V IN - TEMPERATURE ( C) Voltage Conversion ...
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... TC1044S TYPICAL CHARACTERISTICS (Cont.) Output Source Resistance vs. Supply Voltage 100 1.5 2.5 3.5 4.5 5.5 6.5 7.5 SUPPLY VOLTAGE (V) Output Voltage vs. Output Current -10 - OUTPUT CURRENT (mA) 200 175 150 125 100 4-50 Output Source Resistance vs. Temperature 100 20mA ...