TL494CDBRG4

Frequency - Switching:	1kHz ~ 300kHz
Base Part Number:	TL494
Supplier Device Package:	16-SSOP
Package / Case:	16-SSOP (0.209", 5.30mm Width)
Operating Temperature:	0°C ~ 70°C (TA)
Control Features:	Dead Time Control, Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	45%
Series:	--
Voltage - Supply (Vcc/Vdd):	7 V ~ 40 V
Output Phases:	1
Number of Outputs:	2
Topology:	Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
Output Configuration:	Positive
Function:	Step-Up, Step-Down, Step-Up/Step-Down
Output Type:	Transistor Driver
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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TL494CDBRG4 is a PMIC (Power Management Integrated Circuit) Voltage Regulators - DC DC Switching Controllers device. It is the first of its kind with the aim of delivering high performance voltage regulation, low noise and energy efficiency in a very compact package.TL494CDBRG4 is a high-efficiency DC-DC switching regulator control IC targeted for several application fields such as DC/DC conversion and DC-AC conversion. Specifically, it is a pulse-width modulated (PWM) switch mode regulator with an adjustable output voltage and a current-sensing cycle-by-cycle current limit. The device combines a synchronous rectifier, current sense amplifiers and a temperature-compensated voltage reference, allowing for a wide range of output voltages and current ratings. The TL494CDBRG4 is suitable for any application where a precision, wide-output, isolated or non-isolated power supply with low noise and improved efficiency is required. It supports a wide input voltage range from 0.8V to 24V and the output voltage range can be adjusted based on the configuration used. It also offers very low shutdown and start-up current, which makes the device suited for use in battery powered applications. TL494CDBRG4 features wide input voltage support, low RDSon synchronous rectifier, low minimum ON-time, normal low-side MOSFET, cycle-by-cycle current limit and temperature-compensated voltage reference. With these features, the device enables high-efficiency DC-DC power conversion with minimum power losses. The main working principle of TL494CDBRG4 is very simple. It starts with the Voltage range selection in the first step. The device uses this to determine the start-up and shutdown thresholds. The Feedback circuit for the TL494CDBRG4 is then used to detect the output voltage and adjust it through pulse-width-modulated control signal. The pulse-width modulation adjusts the duty cycle of the switch depending on the output voltage. The IC then provides the supply voltage to oscillator, which is connected to the current sense amplifier and PWM comparator. The last step is to adjust the current limit through the current sensing cycle-by-cycle current limit. In summary, TL494CDBRG4 is a versatile DC-DC switching regulator control IC designed mainly for DC/DC and DC-AC conversions. It has a simple working principle and wide input voltage support which helps achieve a high efficiency power conversion with minimum power losses. The device also features low RDSon synchronous rectifier, low minimum ON-time, normal low-side MOSFET and current limit settings, making it suitable for a wide range of applications.

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