icl7660csat Maxim Integrated Products, Inc., icl7660csat Datasheet
icl7660csat
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icl7660csat Summary of contents
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Rev 1; 7/94 Switched-Capacitor Voltage Converters _______________General Description The MAX1044 and ICL7660 are monolithic, CMOS switched-capacitor voltage converters that invert, dou- ble, divide, or multiply a positive input voltage. They are pin compatible with the industry-standard ICL7660 and LTC1044. ...
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Switched-Capacitor Voltage Converters ABSOLUTE MAXIMUM RATINGS Supply Voltage (V+ to GND, or GND to V OUT Input Voltage on Pins 1, 6, and 7 .........-0.3V ≤ Input Current ..................................................................20µA Output Short-Circuit Duration (V+ ≤ 5.5V)..................Continuous Continuous Power Dissipation ...
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Switched-Capacitor Voltage Converters __________________________________________Typical Operating Characteristics ( 0.1µ 10µ open; OSC = open; T BYPASS OUTPUT VOLTAGE and OUTPUT RIPPLE vs. LOAD CURRENT -2.0 400 OUTPUT 350 VOLTAGE -1.5 300 ...
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Switched-Capacitor Voltage Converters ____________________________Typical Operating Characteristics (continued) ( 0.1µ 10µ open; OSC = open; T BYPASS OSCILLATOR FREQUENCY vs. TEMPERATURE 100 A: MAX1044 with BOOST = ICL7600 ...
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Switched-Capacitor Voltage Converters _____________________________________________________________ Pin Description PIN NAME BOOST Frequency Boost. Connecting BOOST to V+ increases the oscillator frequency by a factor of six. When the (MAX1044) oscillator is driven externally, BOOST has no effect and should be left open. ...
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Switched-Capacitor Voltage Converters Figure 2. Ideal Voltage Inverter Figure 3a. Switched Capacitor Model R EQUIV EQUIV Figure 3b. Equivalent Circuit 6 _______________________________________________________________________________________ ...
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Switched-Capacitor Voltage Converters 1 8 MAX1044 ICL7660 10µ *REQUIRED FOR V+ < 3.5V Figure 5. Basic Negative Voltage Converter and allow operation down to 1.5V. For low-voltage operation and compatibility with the ...
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Switched-Capacitor Voltage Converters MAX1044 2 7 ICL7660 10µ Figure 7. External Clocking a function of oscillator frequency and the capacitor value. Oscillator frequency, in turn, is influenced by temperature and supply voltage. For ...
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Switched-Capacitor Voltage Converters The first term is the effective resistance from the switched-capacitor circuit. Conversion losses occur during the transfer of charge between capacitors C1 and C2 when there is a voltage difference between them. The power loss is: 1 ...
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Switched-Capacitor Voltage Converters 1 2 MAX1044 ICL7660 C1 3 10µ OUT 2 C2 10µF Figure 10. Voltage Divider Positive Voltage Doubler Figure 9 illustrates the recommended voltage doubler circuit for the MAX1044/ICL7660. To reduce the ...
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Switched-Capacitor Voltage Converters MAX1044 ICL7660 MAX1044 ICL7660 Figure 13. Paralleling MAX1044/ICL7660 to Reduce Output Resistance V+ 10k REQUIRED FOR TTL ...
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Switched-Capacitor Voltage Converters __________________________________________________________Chip Topographies MAX1044 GND CAP+ BOOST CAP- V OUT LV OSC 0.076" (1.930mm) TRANSISTOR COUNT: 72 SUBSTRATE CONNECTED TO V+ ________________________________________________________Package Information 0.127mm 0.004 Maxim cannot assume responsibility for ...