LT1952EGN#TRPBF

Frequency - Switching:	100kHz ~ 500kHz
Base Part Number:	LT1952
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:	Yes
Duty Cycle (Max):	90%
Series:	--
Voltage - Supply (Vcc/Vdd):	9.25 V ~ 25 V
Output Phases:	1
Number of Outputs:	1
Topology:	Forward Converter
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

LT1952EGN#TRPBF is an DC-DC switching controller belonging to Power Management Integrated Circuit (PMIC) family. It is a fully-integrated circuit (IC) used to regulate high voltage, current and output power while supporting high efficiency and precise accuracy. As a switching controller, it offers high-performance solutions for various applications such as LED drivers, off-line AC/DC converters, and portable battery chargers.

Application Field

LT1952EGN#TRPBF is a highly efficient DC-DC switching controller designed to support high input and output currents. It is highly suitable for low-power (low voltage) cellular modules, Bluetooth adapters, SIM cards, and wireless telecommunications equipment. Additionally, it supports a wide range of output voltages and currents, making it suitable for applications such as lithium ion battery management systems, automotive cooling systems, as well as various lighting and electronic house appliances.

Working Principle

LT1952EGN#TRPBF is a DC-DC switching controller that efficiently converts input voltage and current into more precise outputs with higher current and less power loss. Its operating principle is based on pulse-width modulation (PWM) and can be divided into two stages: switching stage and control stage. In the switching stage, an internal high-voltage switch operated by the PWM circuit receives power from the input power source. The switch is activated by the PWM signals and provides regulation of the output voltage. This switch works at full speed until the voltage or current reaches a predetermined level. In the control stage the internal control circuitry keeps the output parameters within acceptable limits. This is done by comparing the output voltage or current generated by the switch to the pre-set control parameters, and if the output value exceeds the limits, the regulation is adjusted accordingly.

Conclusion

LT1952EGN#TRPBF is an excellent DC-DC switching controller that can meet the high input and output requirements of modern electronic products. Its internal high-voltage switch and control circuitry allows it to efficiently convert input voltage and current while maintaining precise accuracy and high efficiency. As a result, it is highly suitable for applications such as low-power cellular modules, Bluetooth adapters, SIM cards, lithium ion battery management systems, automotive cooling systems, and various lighting and electronic house appliances.

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