LT3512MPMS#PBF

Voltage - Output (Min/Fixed):	--
Base Part Number:	LT3512
Supplier Device Package:	16-MSOP
Package / Case:	16-TFSOP (0.118", 3.00mm Width), 12 Leads
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	40kHz ~ 650kHz
Current - Output:	420mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	100V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	--
Topology:	Flyback
Output Configuration:	Positive or Negative, Isolation Capable
Function:	Step-Up/Step-Down
Part Status:	Active
Packaging:	Tube

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Introduction

LT3512MPMS#PBF is a high-efficiency power management integrated circuit (PMIC), which is specially designed to support various voltage regulator applications. LT3512MPMS#PBF belongs to the PMIC family of DC-DC switching regulators, and it provides efficient, stable, low-cost power supply solutions for a wide range of applications.

Features and Benefits

The LT3512MPMS#PBF can provide up to 90% efficiency and offers excellent DC-DC switching regulator performance. It has an input voltage range of 6V- 20V, and can output up to 2A of continuous current. It is designed to meet the high power dissipation requirements of demanding applications. The LT3512MPMS#PBF also features a variety of protection features, such as over-current, over-voltage and over-temperature protection, as well as a wide range of frequency options for optimized performance. Its exceptionally small package size and low component count make it an ideal solution for space-constrained applications.

Applications

Due to its flexibility and reliable performance, the LT3512MPMS#PBF is well suited for various voltage regulator applications. It can be used as a power supply in LED lighting, multi-output power supplies, battery-operated circuit boards and automotive systems. Additionally, it is suitable for applications where high-efficiency, low-noise and low-profile output is required.

Working Principle

The LT3512MPMS#PBF is a multi-mode DC-DC switching regulator. It uses a range of frequency options, including PWM and Pulse Frequency Modulation (PFM), to regulate the output voltage. The regulator has an internal voltage feedback loop, which ensures the output voltage is stable, even under severe load conditions.When the input voltage is higher than the output voltage, the LT3512MPMS#PBF switches the current between two outputs, a high side and a low side drive, to regulate the output voltage. The high side drive is responsible for connecting the high terminal of the input voltage to the output capacitor, while the low side drive moves the current, allowing the energy stored in the output capacitor to be regulated.The LT3512MPMS#PBF also features multiple modes of operation, including pulse frequency modulation (PFM), pulse width modulation (PWM), and burst mode operation. In PFM mode, the device is powered by either a light or heavy load, depending on the duty cycle of the output waveform, allowing for greater efficiency and lower noise. In PWM mode, the device is powered on for a set amount of time depending on the duty cycle, which is determined by the output voltage. In burst mode operation, the device is powered off for a certain amount of time, before being powered back up for a set time. This allows for higher efficiency and lower noise, especially when the load current is low.

Conclusion

The LT3512MPMS#PBF is a high-efficiency, compact power management integrated circuit (PMIC), which is specially designed to support various voltage regulator applications. As a member of the PMIC family of DC-DC switching regulators, it is ideal for applications where efficient, reliable, and low-profile output is required. It boasts many features, including over-voltage, over-temperature and over-current protection, and multiple frequency options for optimized performance. The LT3512MPMS#PBF is well suited for LED lighting, multi-output power supplies, battery-operated circuit boards and automotive systems due to its flexibility and reliable performance.

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