LTC1550LCS8#TRPBF

Voltage - Output (Min/Fixed):	-1.225V
Base Part Number:	LTC1550
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	900kHz
Current - Output:	20mA
Voltage - Output (Max):	-4.8V
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.7V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Charge Pump
Output Configuration:	Negative
Function:	Step-Up/Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LTC1550LCS8#TRPBF

The LTC1550LCS8#TRPBF is a voltage regulator device from Linear Technology family of DC DC Switching Regulators. This device is a versatile, low dropout, wide input voltage range regulator designed for portable, battery-powered applications. The LTC1550LCS8#TRPBF offers outstanding performance, flexibility and ease of implementation for a wide range of applications.

Features

The LTC1550LCS8#TRPBF offers the following features:- Wide input voltage range: 2.5V to 20V - Output Voltage range of up to 1.24V - Shutdown current of less than 5uA - 1.2A maximum output current - Thermal protection and over-voltage protection - Low dropout voltage of 100mV at 1.2A load - Guaranteed: Load Regulated to 0.2% and Line Regulation of 0.2% - Pin Compatible with LTC1550ICS, LTC1550LCS

Application of LTC1550LCS8#TRPBF

The LTC1550LCS8#TRPBF is designed for a variety of applications such as battery-powered portable devices, automotive electronics and any application that needs to convert an input voltage to a low-voltage output. Typical applications include battery-powered systems, portable medical equipment, automotive systems, and battery-backed-up power supplies.

Working Principle of LTC1550LCS8#TRPBF

The LTC1550LCS8#TRPBF operates using a Self-Biased Voltage-Mode Switching Regulator topology. This topology uses an integrated high-side power MOSFET and a bidirectional N-Channel MOSFET to efficiently regulate the output voltage while maintaining low input-output voltage differential.The integrated high side MOSFET switches on when the output voltage drops below the reference voltage, and turns off when the output voltage rises above the reference voltage. The bidirectional N-channel MOSFET is used to transfer the load current. Any energy left over from the switch current is used to discharge the output capacitor. This helps reduce output voltage ripple and stabilize the output voltage.The LTC1550LCS8#TRPBF also employs a low quiescent current circuit to reduce the requirement for an additional output capacitor, enabling the device to achieve high efficiency in battery-powered applications. In order to maintain a constant output voltage, the LTC1550LCS8#TRPBF provides a wide range of features including: Soft Start, Slew Rate Limiting, Over Voltage Protection, Over-Temperature Protection, and Short-Circuit Protection.

Conclusion

The LTC1550LCS8#TRPBF is an ideal solution for DC DC Switching Regulator applications in a wide variety of applications. The device offers outstanding performance, flexibility and ease of implementation for a wide range of applications.

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