LTC1922IN-1#PBF

Frequency - Switching:	Up to 1MHz
Base Part Number:	LTC1922
Supplier Device Package:	20-PDIP
Package / Case:	20-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Ramp, Soft Start
Serial Interfaces:	--
Clock Sync:	Yes
Synchronous Rectifier:	Yes
Duty Cycle (Max):	99%
Series:	--
Voltage - Supply (Vcc/Vdd):	3.8 V ~ 10.3 V
Output Phases:	1
Number of Outputs:	1
Topology:	Full-Bridge
Output Configuration:	Positive, Isolation Capable
Function:	Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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Introduction LTC1922IN-1#PBF is a general purpose, monolithic integrated phase-locked loop (PLL) IC designed specifically for regulating DC/DC switching controllers. The IC has a wide application range which includes mobile, industrial and home appliance applications. It has a wide input voltage range, low quiescent current and highly efficient power conversion. The IC offers excellent line regulation, high accuracy and good ripple/noise performance. The PLL also features onboard temperature and voltage protection, adjustable delay times and low output noise.This article discusses the application field and working principle of the LTC1922IN-1#PBF. Application Field The LTC1922IN-1#PBF is suitable for a wide range of DC/DC switching controllers. It is specifically designed for use in applications such as mobile, industrial and home appliances due to its wide input voltage range, low quiescent current and highly efficient power conversion. It can also be used in automotive, renewable energy, communications, consumer electronics and audio/video applications. In mobile applications, it is used to regulate the access module power. It can manage the voltage to the access module as it is varied due to temperature changes. This prevents the access module from becoming overloaded or unstable.In industrial applications, the IC provides high accuracy and good ripple/noise performance. This makes it suitable for a wide range of power supply designs including isolated off-line and industrial applications.In home appliance applications, the IC offers a highly efficient power conversion to reduce energy consumption. It also prevents overloads and instabilities due to temperature changes. Working Principle The LTC1922IN-1#PBF is a general-purpose PLL IC specifically designed for DC/DC switching controllers. It has a wide input voltage range, low quiescent current and highly efficient power conversion.The PLL works by using an internal voltage reference that is compared to the output voltage. If the output voltage is lower than the reference voltage, the PLL will increase the switching frequency. If the output voltage is higher than the reference voltage, the PLL will decrease the switching frequency. The output voltage is regulated to the reference value.The IC also features an onboard temperature sensor to prevent overloading and instabilities due to temperature changes. This reduces the need for external temperature sensing components. It also offers adjustable delay times and low output noise. Conclusion The LTC1922IN-1#PBF is a general purpose, monolithic IC designed specifically for regulating DC/DC switching controllers. It offers excellent line regulation, high accuracy and good ripple/noise performance. It also has onboard temperature and voltage protection, adjustable delay times and low output noise. It is suitable for a wide range of applications including mobile, industrial and home appliances. The PLL works by using an internal voltage reference that is compared to the output voltage. It increases or decreases the switching frequency to regulate the output voltage to the reference value.

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