LT1584CT-3.38#PBF

Voltage Dropout (Max):	1.4V @ 7A
Base Part Number:	LT1584
Supplier Device Package:	TO-220-3
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	--
PSRR:	--
Current - Output:	7A
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.38V
Voltage - Input (Max):	7V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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LT1584CT-3.38#PBF Application Field and Working Principle

LT1584CT-3.38#PBF is a kind of monolithic chopper regulator that belongs to PMIC (Power Management IC) voltage regulators. It utilizes linear technique to achieve constant output. It provides noise-free performance and constant output with low bus voltage fluctuation. The chip contains a voltage feedback amplifier, a thermally-limited output current source and many other features.

Features

LT1584CT-3.38#PBF features following characteristics: • Output voltage range of 1.225V to 10V. • Output current up to 3.38A. • High power density and efficiency.• Low component count.• Internal thermal protection circuitry.• Output current monitoring. • Max oscillator frequency of 1MHz.• Low startup current and optimized for high input voltages.

Applications

The LT1584CT-3.38#PBF has a wide range of applications in the following areas: • Battery Chargers • DC to DC converters • On-board DC to DC converter • Notebook Power ranges • Portable device charger • PoE (Power over Ethernet) • Portable equipment• Industrial control applications • Portable equipment • Automotive audio systems• Uninterruptible Power Supply • Solar Power • Communication systems

Working Principle

The LT1584CT-3.38#PBF linear regulator works on the principle of current-mode control. It uses a constant peak current to regulate its output voltage. This current-mode control scheme uses feedback from the output voltage to adjust the internal current to maintain a constant voltage. The peak current is adjusted by a voltage feedback amplifier to regulate the output voltage.The LT1584CT-3.38#PBF will auto-shed load current when the output voltage reaches its threshold before current reaches its limit, preventing IC thermal runaway. This helps LT1584CT-3.38#PBF to achieve a stable and safe output voltage. Additionally, it supports adjustable output voltage and maximum oscillator frequency of 1MHz.

Conclusion

In conclusion, the LT1584CT-3.38#PBF is a high-performance adjustable regulator that belongs to the PMIC voltage regulator family. The chip works on the principle of current-mode control, which uses feedback to adjust the internal current to maintain constant voltage output. The chip offers high power density and efficiency, low component count and internal thermal protection circuitry. This IC is suitable for applications, such as battery charges, DC to DC converters, on-board DC to DC converters, notebook power ranges, portable device charger, PoE (Power over Ethernet), portable equipment, etc. With its high power efficiency and capability to maintain constant output at low bus voltage fluctuation, LT1584CT-3.38#PBF is the ideal choice for a wide range of applications.

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