CMOS Voltage Converters
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Overview
Description
The Intersil ICL7660 and ICL7660A are monolithic CMOS power supply circuits which offer unique performance advantages over previously available devices. The ICL7660 performs supply voltage conversions from positive to negative for an input range of +1. 5V to +10. 0V resulting in complementary output voltages of -1. 5V to -10. 0V and the ICL7660A does the same conversions with an input range of +1. 5V to +12. 0V resulting in complementary output voltages of -1. 5V to -12. 0V. Only 2 noncritical external capacitors are needed for the charge pump and charge reservoir functions. The ICL7660 and ICL7660A can also be connected to function as voltage doublers and will generate output voltages up to +18. 6V with a +10V input. Contained on the chip are a series DC supply regulator, RC oscillator, voltage level translator, and four output power MOS switches. A unique logic element senses the most negative voltage in the device and ensures that the output N-channel switch source-substrate junctions are not forward biased. This assures latchup free operation. The oscillator, when unloaded, oscillates at a nominal frequency of 10kHz for an input supply voltage of 5. 0V. This frequency can be lowered by the addition of an external capacitor to the OSC terminal, or the oscillator may be overdriven by an external clock. The LV terminal may be tied to GROUND to bypass the internal series regulator and improve low voltage (LV) operation. At medium to high voltages (+3. 5V to +10. 0V for the ICL7660 and +3. 5V to +12. 0V for the ICL7660A), the LV pin is left floating to prevent device latchup.
Features
- Simple Conversion of +5V Logic Supply to ±5V Supplies
- Simple Voltage Multiplication (VOUT = (-) nVIN)
- Typical Open Circuit Voltage Conversion Efficiency 99.9%
- Typical Power Efficiency 98%
- Wide Operating Voltage Range
- ICL7660 1.5V to 10.0V
- ICL7660A 1.5V to 12.0V
- ICL7660A 100% Tested at 3V
- Easy to Use - Requires Only 2 External Non-Critical Passive Components
- No External Diode Over Full Temp. and Voltage Range
- Pb-Free Plus Anneal Available (RoHS Compliant)
Comparison
Applications
Applications
- On Board Negative Supply for Dynamic RAMs
- Localized µProcessor (8080 Type) Negative Supplies
- Inexpensive Negative Supplies
- Data Acquisition Systems
Documentation
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|---|---|---|
| Type | Title | Date |
| Datasheet | PDF 662 KB | |
| Brochure | PDF 5.51 MB 日本語 | |
| Datasheet | PDF 555 KB | |
| End Of Life Notice | PDF 292 KB | |
| Product Change Notice | PDF 152 KB | |
| Product Change Notice | PDF 86 KB | |
| Application Note | PDF 509 KB | |
| Application Note | PDF 397 KB | |
| Application Note | PDF 587 KB | |
| Application Note | PDF 262 KB | |
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Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
PLP |
Pkg. Type |
Carrier Type |
MOQ |
Buy / Sample |
|
|---|---|---|---|---|---|
| Part Number | |||||
| 2033 Dec | SOICN | Tube | 3920 | Get Samples, | |
ICL7660CBAZA Active Samples Available |
2033 Dec | SOICN | Tube | 3920 | Get Samples, |
| 2033 Dec | SOICN | Reel | 2500 | ||
| 2033 Dec | SOICN | Reel | 2500 | ||
| 2033 Dec | PDIP | Tube | 3000 | Get Samples, |
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Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| ICL7660CBAZ | Availability |
| ICL7660CBAZA | Availability |
| ICL7660CPAZ | Availability |