LTC3637IMSE#PBF

Voltage - Output (Min/Fixed):	0.8V
Base Part Number:	LTC3637
Supplier Device Package:	16-MSOP-EP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad, 12 Leads
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	--
Current - Output:	1A
Voltage - Output (Max):	76V
Series:	--
Voltage - Input (Max):	76V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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PMIC – Voltage Regulators – DC DC Switching Regulators

The Linear Technology Corp (LTC) LTC3637IMSE#PBF is an advanced power control integrated circuit (IC) device. This device allows for efficient,voltage-mode control over wide dynamic range of step down DC-to-DC operations. Its features include wide input voltage range, high efficiency, 0.6V to 5.5V adjustable output voltage, 0.2V to 3.3V adjustable reference voltage, user-programmable on-time and off-time, selectable operation frequency range, and integrated protection features. It is suitable for use in a wide range of applications such as high power LED drivers, point-of-load converters, battery-operated measures, and telecom/networking applications.

Application Field

The LTC3637IMSE#PBF is designed to provide cost-effective voltage-mode control for high power point-of-load (POL) regulators, such as those found in various telecom equipment and instrumentation. The adjustable output and reference voltages enable designers to create custom voltages to optimize efficiency, transient response, and loop stability in their applications. The device also offers protection features such as thermal protection, over-voltage protection, under-voltage protection, over-current protection, and over-temperature protection, making it suitable for use in harsh-environment applications. Additionally, the device enables designers to select both on-time and off-time, enabling them to reduce switching losses in their designs, optimizing power consumption and overall efficiency. In addition to telecom applications, the device can be used in a variety of other applications such as high power LED drivers, battery-powered measures, and general purpose low-power DC-DC converters.

Working Principle

The LTC3637IMSE#PBF is a voltage-mode DC-DC converter. The device uses the feedback voltage from its “Vout” pin to determine the output voltage and it uses the feedback voltage from its “Vref” pin to determine the reference voltage. These two voltages determine the on-time and off-time of the device which is a key factor in optimizing efficiency. The device also features user-programmable on-time and off-time selection to further optimize efficiency and reduce switching losses. The device also utilizes internal protection features to ensure safe and reliable operation in high power applications. The device features thermal protection, over-voltage protection, under-voltage protection, over-current protection, and over-temperature protection. The device also incorporates a low operating voltage of 0.6V which eliminates the need for additional regulators in low power applications.

Conclusion

The LTC3637IMSE#PBF is an advanced power control IC device which provides cost-effective voltage-mode control for point-of-load (POL) regulators. The device is suitable for use in a wide range of applications such as high power LED drivers, point-of-load converters, battery-operated measures, and telecom/networking applications. The device utilizes user-programmable on-time and off-time selection to further optimize efficiency and reduce switching losses. Additionally, the device incorporates several integrated protection features to ensure safe and reliable operation in harsh environments.

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