ST735CD-TR

Voltage - Output (Min/Fixed):	-5V
Base Part Number:	ST735
Supplier Device Package:	8-SO
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	160kHz
Current - Output:	200mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	6.2V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck-Boost
Output Configuration:	Negative
Function:	Step-Up/Step-Down
Part Status:	Obsolete
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

ST735CD-TR application field and working principle

Introduction

ST735CD-TR is a DC-DC switching regulator designed by STMicroelectronics, a leader in power management. Efficient and reliable, this device fits in a wide range of applications. It operates in an adjustable Schottky diode-capacitor voltage doubler configuration and its main features are wide input voltage range and ultra-low electromagnetic emissions. This article will explain the main application field of the ST735CD-TR as well as its working principle.

Application Field

The ST735CD-TR switching regulator is an ideal solution to provide regulated low voltage outputs such as 3.3V, 5V, and 12V from the input voltage ranges between 3.5V and 20V. Therefore, it is used in a broad range of applications such as battery-powered devices, portable instruments, and automotive avionics.In battery-powered applications, the ST735CD-TR is an excellent regulator as it offers an excellent efficiency due to its low power dissipation at high loads and thanks to its low start-up current.In portable instruments, the device has a great fit as, being a high-efficiency switching regulator, it does not require any bulky, expensive heat sink to dissipate the generated heat.In automotive electronics, the device is ideal due to its low electromagnetic emissions, a feature that reduces the risk of interference to the other vehicles systems.

Working Principle

The ST735CD-TR works in an adjustable Schottky diode-capacitor voltage doubler configuration. It takes an unregulated voltage from a power source, normally a battery, and it will transform it into a regulated output voltage.The internal oscillator of the regulator generates a triangular waveform that, thanks to the feedback circuitry, will change its frequency corresponding to the output voltage changes. This allows the switching regulator to maintain the output voltage independent of the input voltage and the changing load conditions.Internally, the regulator has an intelligent circuit that provides short-circuit protection. This enables it to protect itself and the load from operating beyond the safe limits.

Conclusion

The ST735CD-TR switching regulator is a perfect and reliable device to provide low voltage regulated outputs from 3.5V to 20V input voltage ranges. Thanks to its outstanding features such as excellent efficiency and low electromagnetic emissions, it is a highly recommended choice for a wide range of applications such as battery-powered devices, portable instrument and automotive avionics. Working in an adjustable Schottky diode-capacitor voltage doubler configuration, its internal oscillator generates a triangular waveform able to keep the output voltage regulated as it changes its frequency depending on the output voltage.

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

Part Number	Manufacturer	Price	Quantity	Description