Voltage - Output (Min/Fixed):	--
Base Part Number:	LT3573
Supplier Device Package:	16-MSOP-EP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	40kHz ~ 1MHz
Current - Output:	1.25A
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	40V
Voltage - Input (Min):	3V
Number of Outputs:	1
Output Type:	--
Topology:	Flyback
Output Configuration:	Positive or Negative, Isolation Capable
Function:	Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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

LT3573EMSE#TRPBF Application Field and Working Principle

Introduction

The LT3573EMSE#TRPBF is a high-efficiency, synchronous current mode step-up DC/DC converter. The device contains a 36V, 2A switching buck regulator, a low quiescent current LDO, and a precise reference generator, making it ideal for powering precision control electronics requiring re-energizing on power up and supply sequencing. This product operates with an input voltage range of 1.8V to 5.5V, is capable of delivering output voltages up to 4.2V, and integrates high-side and low-side switches to achieve a fast transient response and low output ripple. In addition, it features output voltage tracking and soft-start, which prevents large inrush current during start-up.

Classification

This article belongs to PMIC - Voltage Regulators - DC DC Switching Regulators.

Application Field

The LT3573EMSE#TRPBF is suitable for a variety of applications that require a high-efficiency, low noise, low power consumption and precise power solution, such as audio systems, medical instruments, mobile devices, battery-powered devices and other precision control electronics.

Features

* Extremely fast transient response* High efficiency up to 95%* Low quiescent current* Wide input voltage range: 1.8V to 5.5V* Output voltage range up to 4.2V* Precise reference generator* Tracking output voltage* Active EMI filter* Enhanced soft-start

Working Principle

The LT3573EMSE#TRPBF employs a current-mode control scheme to provide accurate and responsive control of the output voltage. It consists of an error amplifier, a reference voltage generator, a comparator, a pair of high-side and low-side MOSFET switches, and a current-sense amplifier. The error amplifier compares the feedback voltage to a reference voltage and generates an error signal. The reference generator converts the input voltage to a reference voltage and supplies the error amplifier. The comparator turns on the MOSFETs in response to the error signal. The current-sense amplifier senses the current of the MOSFETs and turns them off when their current reaches a predetermined level. Because of its high-efficiency and low power consumption design, the LT3573EMSE#TRPBF is ideal for applications that require a precise level of control and low power consumption.

Conclusion

The LT3573EMSE#TRPBF is a highly efficient, precision current mode step-up DC/DC converter capable of delivering output voltages up to 4.2V. With wide input voltage range from 1.8V to 5.5V, and fast transient response, output voltage tracking and soft-start, it is the optimal choice for applications that require a high-efficiency, low noise and precise power solution.

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

Part Number	Manufacturer	Price	Quantity	Description