ICL7660ACBAZA

Voltage Regulators - DC DC Switching Regulators Overview

The ICL7660ACBAZA is a monolithic CMOS voltage converter manufactured by Renesas Electronics Corporation, housed in an SOIC-8 surface-mount package. It operates within an input voltage range of 1.5 V to 12 V, providing complementary output voltages from -1.5 V to -12 V with a maximum output current of 45 mA. The device utilizes a charge pump topology with a nominal switching frequency of 10 kHz at 5.0 V input. It requires only two external non-critical capacitors for charge pump and reservoir functions. The component supports boost and inverting configurations, functioning as a voltage doubler up to 22.8 V with a 12 V input.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Monolithic CMOS construction ensures low supply current and high efficiency without requiring external diodes.
• Integrated latch-up protection logic prevents forward biasing of N-channel switch source-substrate junctions.
• Flexible oscillator configuration allows frequency adjustment via external capacitor or over-driving by an external clock.
• LV terminal support enables bypassing the internal series regulator to improve low-voltage operation performance.

Voltage Regulators - DC DC Switching Regulators Applications

• Generating negative power supplies for centralized microprocessors such as 8080-type systems
• Providing onboard negative power sources for dynamic RAM circuits
• Creating dual polarity power rails (+/-) from a single positive logic supply
• Serving as a cost-effective negative power source in data acquisition systems

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify that the specific suffix 'Z' corresponds to lead-free annealed packaging compliant with RoHS standards as indicated by manufacturer documentation. Confirm the package type matches the required SOIC-8 footprint and pin pitch dimensions for PCB layout compatibility. Ensure the operating temperature range aligns with the commercial specifications defined in the official datasheet before finalizing procurement orders.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a simple, inductorless solution is required for generating negative voltages from a positive supply rail. The ICL7660ACBAZA is suitable for applications demanding low quiescent current and minimal external component count. Consider the 45 mA output capability against load requirements. Evaluate the need for frequency boosting if lower output impedance is necessary with reduced capacitance values.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the ICL7660A family of Super Voltage Converters, which offer extended operating supply voltage ranges up to 12 V compared to the standard ICL7660. The 'A' variant provides improved performance characteristics including lower supply current and enhanced reliability across commercial temperature ranges. It serves as a direct replacement for industry-standard ICL7660 devices while offering superior electrical specifications.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

The ICL7660ACBAZA is documented as a direct replacement for the standard ICL7660. Verify compatibility with existing designs using the ICL7660CBAZA or ICL7660SIBAZ, noting differences in maximum input voltage ratings and output current capabilities between variants.