LT3032EDE#PBF

Voltage Dropout (Max):	0.27V @ 150mA (Typ), 0.3V @ 150mA (Typ)
Base Part Number:	LT3032
Supplier Device Package:	14-DFN (4x3)
Package / Case:	14-PowerWFDFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	68dB (120Hz), 54dB (120Hz)
Current - Output:	150mA, 150mA
Series:	--
Voltage - Output (Max):	±20V
Voltage - Output (Min/Fixed):	±1.22V
Voltage - Input (Max):	±20V
Number of Regulators:	2
Output Type:	Adjustable
Output Configuration:	Positive and Negative
Part Status:	Active
Packaging:	Tube

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Introduction

LT3032EDE#PBF is a high current synchronous buck regulator that provides up to 2.5A of output current from 2–6V input voltage range. It is designed for high-power applications such as automotive, communications, industrial and other power supply applications. It features very low power dissipation and high reliability, making it ideal for space-constrained and heat-sensitive requirements. This linear voltage regulator is designed to offer outstanding voltage regulation performance and ease of use for system designers.

LT3032EDE#PBF application field

LT3032EDE#PBF is ideal for a wide range of applications such as automotive, communications, industrial, and other power supply applications. It is an ideal solution for high-power applications such as automotive, communications, and industrial where high currents, stringent regulation, and extreme temperatures are present. It can be used in systems requiring voltage regulation, surge current protection, and temperature compensation.For automotive applications, LT3032EDE#PBF provides reliable power delivery with advanced protection features, fast transient response, and low power dissipation. It is also well suited for supplying large low-voltage systems such as dashboards and body electronics, where size and cost are of concern.For communications applications, LT3032EDE#PBF provides a highly efficient solution for powering high-current wireless transceiver and base station designs. It is ideal for AC/DC power supplies, switchers and UPS applications.For industrial applications, the regulator is capable of driving high currents even in harsh operating temperatures due to its wide temperature range. It is also very suitable for powering LED drivers and drivers for gate driver applications.

LT3032EDE#PBF Working Principle

LT3032EDE#PBF employs a synchronous buck regulator topology. It is composed of a voltage controlled high-side switch, a low-side switch, and a discharge transistor that is controlled by an internal pre-programmed current limit sense resistor. The switches are turned on and off by an internal control logic circuit.The voltage-controlled high-side switch is used to charge up a power inductor with the input voltage. The inductor then stores energy during the on-time of the switch. The inductor is then discharged through the low-side switch, a power MOSFET, to the output voltage rail. The discharge transistor is used to discharge the output capacitor when the switch is off for ripple reduction.When the output load varies, the regulation control circuit adjusts the on-time of the switch to maintain the output voltage within the desired range. LT3032EDE#PBF also features a temperature-compensated current limit function that allows for controlling the maximum current limit. This protects the system from over current conditions and enables tight control of the output current.

Conclusion

LT3032EDE#PBF is an excellent linear voltage regulator perfectly suitable for a wide range of applications. It is a high-current synchronous buck regulator that provides up to 2.5A of output current and offers outstanding voltage regulation performance and reliability. It employs a synchronous buck regulator topology, a voltage-controlled high-side switch, a low-side switch, and a discharge transistor. It also features a temperature-compensated current limit function that protects the system from over current conditions and enables tight control of the output current.

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