LTC1558CS8-3.3#TRPBF Integrated Circuits (ICs)

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Power management integrated circuits (PMICs) are essential components of current electronic products as they enable system designs with reduced component count, lower component cost, and simplify circuit requirements. One example of a PMIC is the LTC1558CS8-3.3#TRPBF, a single-chip power management solution for battery-operated systems that offer an integrated and comprehensive single-chip battery management with high system integration.

Application Field

The LTC1558CS8-3.3#TRPBF PMIC is specifically designed for use in battery-operated products to facilitate the integration of a complete power-management stage resulting in reduced component cost. This makes it an ideal solution for a variety of applications, such as portable medical devices, GPS navigations, telecommunication systems, and video game consoles, to name a few.

The integrated capabilities of the LTC1558CS8-3.3#TRPBF make it an ideal choice for battery management, including low-side N-channel MOSFETs, internal voltage references, data converters, back-bias generator, and up to eight low-dropout linear regulators. Moreover, it offers an integrated system power monitor with high accuracy that provides the ability to detect and measure a variety of system power-distribution conditions and helps to meet the latest Energy and Star standards.

Working Principle

The LTC1558CS8-3.3#TRPBF consists of a primary switch connected between the input and output of the device and two buck controllers, one for each output voltage. When the system is initially powered up, the primary switch is turned on which is then connected to a resistor network to establish the output voltage. The buck controllers measure the output voltage and adjust the duty cycle of the primary switch to ensure that the output voltage remains within tolerance.

The control loop of the LTC1558CS8-3.3#TRPBF also features a variety of protections and features, such as over-current, over-temperature, under-voltage lockout and back-bias generator to enhance system power management. One of the major advantages of the LTC1558CS8-3.3#TRPBF is its flexibility, allowing the supply design to be adapted to the application, with a wide input voltage range, programmable output voltage, wide temperature range (-40°C to 105°C) and fast transient response.

Each output voltage can be independently configured using the control pins provided by the device, allowing the user to selectively enable or disable the voltage outputs. Moreover, the device has integrated low-dropout linear regulators to provide an ultra-low-noise and low-ripple output. The integrated low-side N-Channel MOSFET enables efficient system power management.

The LTC1558CS8-3.3#TRPBF is also designed with a data converter that provides a system-level monitoring of the supply’s main parameters, including input voltage, input current and temperature. This feature allows the device to accurately detect and measure system power-distribution conditions and help to meet the latest Energy and Star standards.

Conclusion

The LTC1558CS8-3.3#TRPBF is an integrated and comprehensive single-chip power-management solution for battery-operated systems that offer an integrated system monitor with high accuracy for automatic system power-management strategies. It offers low-side N-Channel MOSFETs, voltage references, data converters, back-bias generator, and up to eight low-dropout linear regulators. It is an ideal solution for battery management applications such as portable medical devices, GPS navigations, telecommunication systems, and video game consoles.

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