LT1950EGN#PBF

Frequency - Switching:	100kHz ~ 500kHz
Base Part Number:	LT1950
Supplier Device Package:	16-SSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C (TJ)
Control Features:	Enable, Frequency Control
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	No
Duty Cycle (Max):	95%
Series:	--
Voltage - Supply (Vcc/Vdd):	3 V ~ 25 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward Converter, SEPIC
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction

The LT1950EGN#PBF is a high-efficiency, synchronous, DC-DC current mode step-up switching controller designed for industrial and automotive applications. Its design allows it to reduce the total size requirements for most systems requiring regulated output power. It is capable of producing up to 2.1 amperes continuous current at voltages of up to 15V from a single lithium-ion cell or from multiple AA or AAA batteries.

Application Field

The LT1950EGN#PBF is ideal for industrial applications such as providing power to PCBs, servo motors, regulators, microprocessors, FPGAs, and other low-voltage circuits. It is also suitable for powering actuators, solenoid valves, and other industrial applications where small form factor, high efficiency, and high output current are crucial.The LT1950EGN#PBF can also be used in automotive applications, such as providing power to relays, sensors, connectors, displays, and electronic control units. Its high-frequency operation reduces the number of external components required, making it an ideal solution for automotive systems with limited space.

Working Principle

The LT1950EGN#PBF uses a current-mode control method. It regulates output voltage by monitoring the current flow through an internal nor gate in the IC. If the output voltage rises above the preset voltage, the IC will lower the output voltage by reducing the duty cycle or switching frequency of the power stage. This allows it to provide accurate regulation of the output voltage.In addition to its current-mode control method, the LT1950EGN#PBF also has a number of protective features built-in. These include overvoltage and undervoltage protection, temperature protection, overcurrent protection, and predictive power output protection. These protective features ensure optimal performance of the IC and minimize system downtime.

Conclusion

The LT1950EGN#PBF is a high-efficiency, synchronous, current-mode step-up switching controller designed for industrial and automotive applications. Its design allows it to reduce the total size requirements for most systems requiring regulated output power, making it an ideal choice for applications where small form-factor, high efficiency, and high output current are crucial. Its current-mode control and built-in protective features ensure optimal performance and maximum system uptime.

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