LTC1436ACGN#TRPBF

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Today, power management integrated circuits (PMICs) play an essential role in the design of electronic devices, from consumer electronics to industrial applications. From battery chargers to voltage regulators, DC-DC converters, switches and other peripherals, PMICs are complex silicon devices specifically designed to manage power, powering and controlling ICs in a system, making the overall system design simpler, more reliable and more cost-effective.LTC1436ACGN#TRPBF is a special PMIC under the category of "Voltage Regulators - DC DC​​ Switching Controllers", specifically designed to be used as a voltage regulator in DC-DC converter applications. It integrates a precision 1.2V bandgap reference, two high-accuracy current sources and two PWM comparators. This innovative PMIC provides a simple, low-cost solution for various switching converter applications such as voltage regulators, stepup and step-down, buck boost converters.The LTC1436ACGN#TRPBF can dynamically adjust the output voltage based on the load requirement, and in this way, it increases the overall efficiency, reduces the output ripple and dynamic response time. It can be used as a both fixed and adjustable output voltage regulator and provides excellent load regulation of the output voltage. The switching frequency can be programmed to a frequency between 200kHz to 750kHz. It is available in a Green small 24-lead TSSOP package, consuming only 5.5mW of operating current.The working principle of the LTC1436ACGN#TRPBF is quite simple. It uses two comparators, one for current mode control and one for voltage mode control, and outputs PWM signals to the output stage. The current mode comparator compares the error signal from the reference voltage and the signal from the current sense resistor, and the voltage mode comparator compares the reference voltage and the feedback voltage. The output of each comparator is used to generate a PWM signal which is applied to the gate of the power stage switch, with the duty cycle determined by the voltage and current errors.In the LTC1436ACGN#TRPBF, the current error signal is generated by a precision current source that compares the feedback current to a reference current, while the voltage error signal is generated by a precision bandgap reference that compares the output voltage to a reference voltage. The duty cycle of the PWM signal is determined by combining these two error signals based on their magnitude.In summary, the LTC1436ACGN#TRPBF combines a precision 1.2V bandgap reference, two high-accuracy current sources, and two PWM comparators. It provides a simple, low-cost solution for a variety of applications including voltage regulators, stepup and step-down, buck boost converters. Its working principle is quite simple and easy to understand, with the PWM signals generated from two error signals being applied to the gate of the power stage switch to adjust the output voltage based on the load requirement.

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