LTC3543EDCB#TRMPBF

Voltage - Output (Min/Fixed):	0.6V
Base Part Number:	LTC3543
Supplier Device Package:	6-DFN (2x3)
Package / Case:	6-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	Yes
Frequency - Switching:	2.25MHz
Current - Output:	600mA
Voltage - Output (Max):	5.5V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The LTC3543EDCB#TRMPBF is an efficient DC/DC switching regulator specifically designed for battery-powered applications in which low quiescent current and miniature size are critically important. It is a switch mode step-down regulator capable of delivering up to 1.2A output current. The device requires only four small external components and features an integrated synchronous power switch with adaptive drive circuitry, allowing operation with very small external components. With its wide range of features, the LTC3543EDCBTRMPBF is ideal for a variety of portable and mobile device applications.The LTC3543EDCB#TRMPBF is based on a switching architecture and uses a control algorithm that allows it to reduce the output current dynamically in response to changing load conditions or battery voltage. This is known as \'adaptive voltage positioning\' (AVP) and helps to increase the efficiency, reduce quiescent current, and extend battery life. This switching regulator is designed to operate from a 2.5V to 5.5V input voltage range, and produces an output voltage of 0.6V to 4V adjustable in 64mV steps. The output voltage is controlled by a single external resistor and can be adjusted up to ±2.25%. The external components required to power the LTC3543EDCB#TRMPBF are the inductor, capacitor, and the output voltage setting resistor. The output voltage of the device is regulated by a current-mode switching control algorithm. The switching frequency of the device is internally set and is typically 500kHz, allowing small size inductors and capacitors to be used.The integrated power switch of the LTC3543EDCB#TRMPBF allows it to operate with very small external components. The device has a wide input voltage range and low quiescent current. It has an input undervoltage lockout and output current limiting feature to protect against current spikes and over-voltage conditions. The device also has an enable pin with adjustable transition time that can be used to control the ON/OFF state of the regulator.The LTC3543EDCB#TRMPBF also features a low noise operation mode that greatly reduces the output noise while still allowing it to deliver sufficient current to the load at a low quiescent current. The device also has the capability to monitor to the battery voltage and alert the host system in case of an over-voltage condition.The device is an ideal choice for battery powered portable or mobile device applications requiring low quiescent current, small external components and high efficiency. The combination of low cost, small size and high performance make the LTC3543EDCB#TRMPBF an easy to use solution for a variety of applications.

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