ICL7660ISA+

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ICL7660ISA+ is an application specific multi-channel PWM boost converter with an integrated high-side power switch. It offers an optimal solution for powering various voltage rails from a single battery. This device combines the high-efficiency and wide-frequency range boost converter, the low RDSON high-side MOSFET, the high-side power current monitoring, and the open-drain, low quiescent current oscillator all in a tiny QFN package.

The ICL7660ISA+ is designed to provide a wide input voltage and wide output voltage range, making it suitable for applications such as Cell phones, PDAs, cameras, and portable digital appliances, as well as static power supply solutions in automotive and industrial products. The main features of this device include:

• Wide input voltage range from 3.2V to 6.5V
• Wide output voltage range from 0.8V to 5.3V
• High efficiency boost converter topology
• Adaptive current-mode control for a wide-frequency range operation
• Low RDSON N-Ch MOSFET high-side power switch at 3.8mΩ
• Integrated high-side power current monitoring
• Open-drain low quiescent current oscillator
• Small QFN package

Role and Working Principle

The ICL7660ISA+ is a DC-DC switching regulator. It is designed to regulate the voltage output when the input voltage changes. The input voltage is transformed by the boost converter stage before being applied to the output load. This switching regulator can convert input voltages ranging from 3.2V to 6.5V to output voltages ranging from 0.8V to 5.3V.

The ICL7660ISA+ contains an adaptive current mode control circuit to support wide frequency range and high-efficiency boost converter topology. This voltage regulator also contains a high-side power switch integrated in the device, along with a high-side power current monitoring function. This allows for improved efficiency, better load regulation and a smaller board footprint.

The ICL7660ISA+ also has an open-drain low quiescent current oscillator. This oscillator works to ensure the boost converter cycle is synchronized in order to enable the switching regulator to convert the input voltage to the desired output voltage. This device is designed to operate in pulse-width modulation (PWM) mode to maintain a constant output voltage that is adjustable via external resistor. Comparing to the traditional linear voltage regulators, the ICL7660ISA+ requires fewer external components and is suitable for applications that require low cost, small size and high efficiency.

Applications

The ICL7660ISA+ DC-DC switching regulator is designed to be used in a wide range of applications, such as:

• Cell phones, PDAs, cameras and portable digital appliances
• Industrial products
• Automotive products
• Static power supply solutions

The ICL7660ISA+ is a cost-effective and reliable voltage regulator suitable for low-cost, small-size and high-efficiency power applications. It is ideal for use in applications requiring high-speed switching frequencies and low quiescent current.

Conclusion

The ICL7660ISA+ DC-DC switching regulator is a versatile device that is ideal for powering various voltage rails from a single battery. This device offers an optimal solution for applications that require low-cost, small-size and high-efficiency power solution. The ICL7660ISA+ combines a wide input voltage range, a wide output voltage range, adaptive current-mode control, an integrated high-side power switch and a low quiescent current oscillator into a tiny QFN package.

Thanks to the versatile and innovative design of the ICL7660ISA+, it is suitable for a wide variety of applications, such as cell phones, PDAs, cameras, portable digital appliances, automotive and industrial products.

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