LT3500EMSE#TRPBF

Voltage/Current - Output 3:	--
Base Part Number:	LT3500
Supplier Device Package:	16-MSOP-EP
Package / Case:	16-TFSOP (0.118", 3.00mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	3 V ~ 36 V
w/Sequencer:	No
w/Supervisor:	No
w/LED Driver:	No
Series:	--
Voltage/Current - Output 2:	Adjustable, 13mA
Voltage/Current - Output 1:	0.8 V ~ 38.9 V, 2A
Frequency - Switching:	500kHz ~ 2.4MHz
Number of Outputs:	2
Function:	Any Function
Topology:	Step-Down (Buck) (1), Linear (LDO) (1)
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LT3500EMSE#TRPBF Application Field and Working Principle The LT3500EMSE#TRPBF is a high performance, low voltage dual output voltage regulator with linear plus switching regulators. It is designed to provide power of up to 800mA without needing an external transistor driver. This product is suitable for use in applications such as portable media players, cell phones, PDAs, handheld instrumentation and digital audio products.The LT3500EMSE#TRPBF features a wide operating temperature range, low dropout voltage and battery drain current, low voltage operation, low noise output, and high PSRR performance for a reliable regulated output. When compared to a traditional linear regulator, the dual output regulator increases efficiency and thus allows for a smaller footprint within an application.Application FieldThe LT3500EMSE#TRPBF is popularly used in a wide spectrum of applications, ranging from personal electronic devices such as PDAs, portable media players or cell phones to medical, automotive and industrial products. It is well-suited for any application with space and/or efficiency limitation where a low output voltage is required. Additionally, its very low dropout voltage, high PSRR and fast transient response characteristics help greatly to eliminate noise, current draw and/or power supply related problems.Working PrincipleThe LT3500EMSE#TRPBF employs a linear plus switching regulator to provide two outputs. The switching regulator generates one of the two outputs, and the linear regulator provides the other. The two regulators ensure low voltage and low noise output, making the product suitable for a variety of applications.The switching regulator draws power from an external power source and provides a voltage boost using an external NPN switching transistor. The linear regulator then uses this boosted voltage to provide a regulated output voltage. An internal error-amplifier compares the regulated output voltage to a reference voltage, and adjusts the transistor’s output current to keep the output voltage constant.In summary, the LT3500EMSE#TRPBF combines a linear and a switching regulator to provide two outputs, allowing for low voltage and high efficiency operation. The product is suitable for a wide variety of applications, and is particularly useful when used in space and/or efficiency limited applications. It also has excellent PSRR, fast transient response and low dropout voltage characteristics.

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