LTC3530EMS#TRPBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Analog ICs are one of key ingredients in any electronic design and their importance cannot be overestimated. Voltage regulators and DC-DC switching regulators are prevalent components in analog IC design as they perform a wide variety of tasks, from controlling current and voltage, to protecting and stabilizing power supplies, to providing output stability for digital applications. This article will take a look at the application field and working principle of the LTC3530EMS#TRPBF, a DC-DC switching regulator.

Application Field

The LTC3530EMS#TRPBF is a step-down current mode switching regulator with an integrated high-side MOSFET and low-side MOSFET. It is specifically designed for powering microcontroller cores and other integrated circuit loads which require low output ripple and low supply noise. The LTC3530EMS#TRPBF offers excellent efficiency and fast transient response in a compact, low profile, easy-to-use 2.5mm x 2.5mm DFN16 package.

The device is ideal for powering applications such as cellular handsets, PDAs, digital cameras, portable medical devices, tablets, and any other application where small size and maximum efficiency is desired. It can operate with input voltages from 2.2V up to 5.5V and can deliver up to 1.6A of continuous output current.

Working Principle

The LTC3530EMS#TRPBF is a constant frequency, current mode step-down switching regulator. It operates at 1.4 MHz and can be synchronized to an external clock signal if needed. The regulation circuit of the LTC3530EMS#TRPBF consists of a polyphase current comparator, a transconductance error amplifier, and an internal voltage reference.

When the input voltage is higher than the desired output voltage, the polyphase current comparator initiates the switching action and current flows through the MOSFET switch, the catch diode, and the inductor. When current reaches the current limit, the comparator shuts off the switch. The current stored in the inductor then reverses direction and flows through the catch diode and the MOSFET switch in the opposite direction generating the output voltage.

The amount of current stored by the inductor controls the output voltage and this amount is controlled by the voltage output error amplifier and the internal voltage reference. The error between the output voltage and the desired voltage is detected by the error amplifier, which adjusts the amount of current flowing through the inductor to maintain a constant output voltage.

The LTC3530EMS#TRPBF is an ideal solution for a wide range of applications due to its high efficiency, small size, and fast transient response. It is an excellent choice for powering microcontroller cores, digital cameras, PDAs, tablets, and any other application that requires a low output ripple and low supply noise.

The specific data is subject to PDF, and the above content is for reference