This problem is solved by the ICL, a monolithic CMOS Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. ICL, ICL Datasheet, ICL CMOS Voltage Converters, buy ICL Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2All trademarks are the property of their respective.
|Published (Last):||9 June 2005|
|PDF File Size:||13.8 Mb|
|ePub File Size:||5.38 Mb|
|Price:||Free* [*Free Regsitration Required]|
Operation is guaranteed from 1. A Max at 5V. Oscillator control circuitry and four.
LTCA Datasheet and Product Info | Analog Devices
Applications include generating a -5V supply datasheey a. Ordering Information continued at end of data sheet. Call toll free for free samples or literature.
Input Voltage on Pins 1, 6, and Plastic DIP derate 9. Lead Temperature soldering, 10sec Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress il7660 only, and functional.
ICL 7660 CPAZ
Tests are performed without diode in circuit. The 1pF frequency is correlat. C; unless otherwise noted. Connection to positive terminal of Charge-Pump Capacitor. For most applications, the positive terminal of the reservoir capacitor is connected to this pin.
Connection to negative terminal of Charge-Pump Capacitor. For most applications, the negative terminal of the reservoir capacitor is.
Connect to ground for supply voltages below 3. Leave open for supply voltages above 5V. Connecting an external capacitor reduces the oscillator frequency. Power-Supply Positive Voltage Input. This connects C1 in parallel with. If the voltage across C2 is.
Datasheet search «ICL7660*»
During successive cycles, Ddatasheet will continue pouring. In an actual voltage inverter, the output is less. Switching the bucket capacitor, C1, between. When the switch in Cil7660 3a is in the left position. When the switch moves to. They work by first accumulating charge in a. The ideal voltage inverter circuit in Figure 2. Figure dayasheet shows the basic negative. For many applications, only.
Figure 4 shows an internal voltage regulator inside the. Use the LV pin to bypass this. Basic Negative Voltage Converter. Figure 6 shows this connection. When the oscillator is. The advantage is improved low-voltage. An external capacitor can be connected to the OSC pin. When operating at low supply voltages with LV open. It also increases output ripple and output impedance. This can be offset kcl7660 using larger values for C1 and C2. Connections to the OSC pin should be short to prevent.
Driving OSC with an external oscillator is useful when. Increasing the frequency datsheet. The pump and output ripple frequencies datsaheet one-half. It also increases the quiescent current. Only minimum values of 1kHz and 5kHz for. If a specific oscillator frequency.
If the external clock does not. The output voltages will vary under load according to. The output resistance is primarily. The power efficiency of a switched-capacitor voltage. Oscillator frequency, in turn, is influenced by. For example, with a. The total power loss is: Minor supply voltage variations that are inconsequential. The internal losses are associated with the IC’s internal. Datsheet losses are affected by operating conditions such.
The output ripple and output icl76660 increase under. The next two losses are associated with the output. During start-up, pump capacitors C1 and C2 must be.
Furthermore, if the supply or ground impedance is. The first term is the effective resistance from the. OSC reduces the quiescent current to about 15? Maintaining 20mA output current capability requires. Conversion losses occur during the transfer of charge. The power loss is: Note that lower capacitor values can be used for lower. For example, setting the oscillator to.
F gives a maximum. I OUT of 2mA, a no-load quiescent current of 10? Efficiency can be improved by lowering output voltage. Both output voltage rip. The output voltage ripple can be calculated by noting. C2 during one-half of the charge-pump cycle. Slowing the oscillator frequency reduces quiescent cur. Adding a diode in parallel with. The oscillator frequency can be reduced by con. C2, with the anode connected datasehet V OUT and cathode.
Reducing the oscillator frequency increases the ripple. For example, in a negative voltage converter. Figure 8 shows a negative voltage converter, the most. F bucket and reservoir capacitors.
A of quiescent current. Combined Positive and Negative Converter.
Figure 9 illustrates the recommended voltage doubler. To reduce the voltage.
For true voltage doubling or higher output cur. Larger negative multiples of the supply voltage can be. The voltage divider shown in Figure 10 splits the power. A third capacitor can be added between.
ICL CPAZ: DC – DC Converter IC up to V, DIL-8 at reichelt elektronik
Three or more devices can be cascaded. Combined Positive Multiplication and. For example, the output resistance of two cascaded. Figure 11 illustrates this dual-function circuit. MAXs is approximately five times the output resis.
Capacitors C1 and C3 perform the bucket and reser.