LTC3765IMSE#PBF

Series:	Direct Flux Limit™
Packaging:	Tube
Part Status:	Active
Applications:	Secondary-Side Controller
Voltage - Input:	--
Voltage - Supply:	7.7 V ~ 14.5 V
Current - Supply:	1.7mA
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Supplier Device Package:	16-MSOP-EP
Base Part Number:	LTC3765

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Introduction

The LTC3765IMSE#PBF is a high efficiency, quad PWM synchronous step-down switching regulator controller. It features four fully integrated pulse-width modulation (PWM) controllers capable of supplying up to four separate outputs up to 6.5A each at voltages from 0.6V to 5.5V. This device is suitable for applications such as distributed power systems, CPU and peripheral power supplies, high power LEDs, and other applications needing multiple high precision regulated output voltages.

Power supply controllers, Monitors

A power supply controller is a device used to regulate the output voltage of a power supply to a precise level. It is typically used in combination with other components, such as transformers, inductors, and capacitors, to achieve a precise output voltage and current. Power supply controllers are also used to enhance system efficiency and to minimize power losses. Power supply monitors provide a way to measure and monitor the output voltage, current, and power of a power supply. These devices allow precise control of the output voltage and current levels and provide a warning when the output levels exceed a pre-determined limit.

LTC3765IMSE#PBF application field and working principle

The LTC3765IMSE#PBF is a four-phase synchronous PWM buck switching regulator controller. It features a high voltage, low dropout linear regulator, programmable frequency spread spectrum mode, internal soft start, and programmable overvoltage and undervoltage protection. This controller is suitable for distributed power systems, CPU and peripheral power supplies, high power LEDs, and other applications needing multiple high precision regulated output voltages. The core of the LTC3765IMSE#PBF is a single-stage synchronous PWM buck regulator, with four independent pulse width modulation (PWM) controllers. Each controller has the ability to provide up to 6.5A of output current at voltages from 0.6V to 5.5V. The device supports either pulse frequency modulation (PFM) or variable-frequency synchronous PWM mode. The PFM mode is a low-noise mode where the switching frequency is modulated as a function of load. The synchronous PWM mode is designed to achieve high efficiency (up to 97%), low noise, and fast transient response. The device also features a high-voltage, low-drop linear regulator for supplying sensitive loads with an adjustable voltage from 0.8V to 5.3V. In addition, the LTC3765IMSE#PBF includes overvoltage, undervoltage, overcurrent, and short-circuit protection. The overvoltage protection circuitry protects the device from high output voltage levels and is adjustable from 2V to 6V.

Conclusion

The LTC3765IMSE#PBF is a highly efficient, quad PWM synchronous step-down switching regulator controller. It is well suited for distributed power systems, CPU and peripheral power supplies, high power LEDs, and other applications needing multiple high precision regulated output voltages. The device integrates four fully integrated PWM controllers capable of providing up to 6.5A of current each at voltages from 0.6V to 5.5V. Additionally, the device includes a high-voltage, low-drop linear regulator for supplying sensitive loads with adjustable voltage from 0.8V to 5.3V. The device is also equipped with overvoltage, undervoltage, overcurrent, and short-circuit protection.

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