TL2844PG4

Frequency - Switching:	Up to 500kHz
Base Part Number:	TL2844
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	48%
Series:	--
Voltage - Supply (Vcc/Vdd):	10 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback, Forward
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tube

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TL2844PG4Application Field and Working PrincipleTL2844PG4 is a DC/DC power supply controller (DC/DC switching regulator controller) produced by the Taiyo Yuden Corporation from Japan. It is a single-chip DC/DC power supply control IC dedicated to incorporating a power supply into an application.The TL2844PG4 is an ultra-small dual output low voltage power supply controller dedicated to providing a wide range of DC voltage outputs. The device supports an input voltage range of 0.8 V to 5.5 V and can provide a power supply of up to 400 mW. The first output is an adjustable output voltage at 3 V to 5.5 V, while the second output is adjustable from 0.7 V to 3 V. It also supports pulse-width modulation (PWM), allowing stable output even when the operating frequency changes.The main features of the TL2844PG4 include wide input voltage range of 0.8 V to 5.5 V, low stand-by current consumption, built-in soft start circuit, simple resonance control circuit and high accuracy. It also supports wide range of voltage stability and offers various protection features including over voltage protection, over current protection and thermal protection.TL2844PG4 working principleThe TL2844PG4 is a DC/DC switching regulator controller that utilizes pulse-width modulation (PWM) to convert an input voltage to a desired output voltage. A PWM comparator detects the input voltage and compares it to a reference voltage, and then produces a fixed duty cycle PWM signal. This PWM signal is output to a power stage such as a MOSFET, which then switches on and off to increase or decrease the input voltage as necessary to achieve the desired output voltage.TL2844PG4 application fieldThe TL2844PG4 can be used in a variety of applications ranging from consumer electronics to automotive, industrial, and medical devices. It is suitable for applications where size, cost and efficiency are most important such as mobile peripherals, point-of-sale (POS) terminals, barcode readers, scanners, calculator, and consumer electronics. It is also ideal for automotive applications such as automotive infotainment systems, drowsiness detection, and car interior/exterior lighting. It can also be used in industrial applications such as industrial process control, robotic control, medical instruments, and elevator control systems.ConclusionTL2844PG4 is a DC/DC power supply controller, suitable for a variety of application fields from consumer electronics to automotive, industrial, and medical devices. It utilizes pulse-width modulation (PWM) to convert an input voltage to a desired output voltage, and features wide input voltage range of 0.8 V to 5.5 V, low Stand-by current consumption and a variety of protection features.

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