LTC3526LEDC-2#TRPBF

Voltage - Output (Min/Fixed):	1.5V
Base Part Number:	LTC3526
Supplier Device Package:	6-DFN (2x2)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2MHz
Current - Output:	550mA (Switch)
Voltage - Output (Max):	5.25V
Series:	--
Voltage - Input (Max):	5V
Voltage - Input (Min):	0.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Boost
Output Configuration:	Positive
Function:	Step-Up
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LTC3526LEDC-2#TRPBF Application Field and Working Principle

Introduction

The LTC3526LEDC-2#TRPBF can be classified as an Integrated PMIC or DC DC Switching Regulator. It is a highly efficient, low power DC-DC Boost Converter capable of powering up single-cell Li-ion batteries. It supports a wide input supply range and it provides an adjustable 3.3 V output voltage, making it perfectly suitable for such applications as multimedia players, navigation systems, and other hand-held battery-powered devices.

Application Field

The LTC3526LEDC-2#TRPBF can be applied in a wide range of applications and scenarios. It features low quiescent current and high efficiency, enabling applications for smart-phones, PDAs, digital still cameras, and many others. The adjustable output voltage helps meeting the voltage requirements of various microprocessors, converters and displays.In addition, this DC DC Switching Regulator has a high efficiency at a wide input current range, making it suitable for use in high-energy-dense applications. It is also suitable for use in battery-charging applications and other scenarios where low losses at low voltages are desired.

Working Principle

The LTC3526LEDC-2#TRPBF is a buck-boost DC-DC converter that can regulate an output voltage (VOUT) over a wide range of input voltages (VIN). It is designed to automatically adjust to changing input voltages and switching frequencies, making it ideal for use in applications requiring very high efficiency, while still providing safety and flexibility.The converter consists of two power transistors (Q1 and Q2) sharing a common temperature-controlled sink (TS). These transistors operate in a buck-boost forward (or flyback) mode to provide an output voltage that is adjustable by applying an external reference voltage (Vref) to the voltage feedback (FB) pin.To simplify the design of the converter, an internal comparator (ICMP) is also included. This comparator monitors the output voltage and adjusts the transistors drive duty cycle accordingly. This ensures that the output voltage is always maintained within a defined tolerance range, while the switch transistors provide low power loss and high efficiency.

Conclusion

In conclusion, the LTC3526LEDC-2#TRPBF can be classified as an Integrated PMIC or DC DC Switching Regulator. It is a highly efficient, low power DC-DC Boost Converter capable of powering up single-cell Li-ion batteries. It features low quiescent current and high efficiency, making it suitable for a wide range of applications. Its adjustable output voltage helps meeting the voltage requirements of various microprocessors, converters and displays. The converter consists of two power transistors (Q1 and Q2) sharing a common temperature-controlled sink (TS) and an internal comparator(ICMP). These components help to regulate the output voltage in order to provide low power loss and high efficiency.

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