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ICL7660CPA

ICL7660CPA

Renesas (Intersil)
Very similar charge-pump inverter available in the same general package, commonly used as a low-cost negative voltage generator for low-current analog circuits.
Active550 in stock
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Overview

The ICL7660CPA is a monolithic CMOS switched-capacitor voltage converter that performs supply voltage conversions from positive to negative. It is widely used to generate a negative voltage rail in single-supply systems with minimal external components, requiring only two non-critical capacitors for operation.

Why Choose This Part

This device offers high efficiency with a typical power conversion rate of 98% and operates over a wide input voltage range of 1.5V to 10.5V. Its low supply current of 80-175 microamps and the simple 8-DIP package make it an ideal, low-cost solution for adding negative rails to analog circuits without complex switching regulators.

Applications

Negative Voltage Generation
Converting a +5V logic supply into a -5V rail to power the negative supply pins of operational amplifiers and data converters.
Voltage Doubling
Configuring the charge pump to provide a positive output voltage nearly double the input source voltage.
RS-232 Power Supplies
Providing the necessary bipolar voltage levels for low-power serial communication interfaces from a single 5V input.

Key Specifications

Function Ratiometric
Topology Charge Pump
Output Type Fixed
Mounting Type Through Hole
Package / Case 8-DIP (0.300", 7.62mm)
Current - Output 45mA
Number of Outputs 1
Output Configuration Positive or Negative
Frequency - Switching 10kHz
Operating Temperature 0degC ~ 70degC (TA)
Synchronous Rectifier No
Voltage - Input (Max) 10V
Voltage - Input (Min) 1.5V
Supplier Device Package 8-PDIP
Voltage - Output (Min/Fixed) -Vin, 2Vin

Getting Started

To use the ICL7660CPA as a standard inverter, connect the input voltage to Pin 8 and ground to Pin 3, then place 10uF electrolytic capacitors between Pins 2 and 4, and Pin 5 and ground. For input voltages above 6.5V, connect the LV pin (Pin 6) to ground to prevent device latch-up, ensuring the output remains stable at 10kHz switching frequency.

Also Consider

LT1054CN8 Linear Technology - Offers a significantly higher output current capability of 100mA compared to the 45mA of the ICL7660.
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