Integrated Circuits (ICs)

TL494ID

Obsolete

VOLTAGE MODE PWM CONTROLLER 40V 200MA 300KHZ 16-PIN SOIC TUBE

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Search across all available documentation for this part.

DocumentsOff-Line SMPS Failure Modes PWM Switchers and DC-DC Converters TL494 Pulse-Width-Modulation Control Circuits datasheet (Rev. I)+7

Integrated Circuits (ICs)

TL494ID

Obsolete

Texas Instruments

VOLTAGE MODE PWM CONTROLLER 40V 200MA 300KHZ 16-PIN SOIC TUBE

Deep-Dive with AI

DocumentsOff-Line SMPS Failure Modes PWM Switchers and DC-DC Converters TL494 Pulse-Width-Modulation Control Circuits datasheet (Rev. I)+7

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	TL494ID

Clock Sync	False
Control Features	Frequency Control, Dead Time Control
Duty Cycle (Max) [Max]	45 %
Frequency - Switching [Max]	300 kHz
Frequency - Switching [Min]	1 kHz
Function	Step-Up, Step-Up/Step-Down, Step-Down
Mounting Type	Surface Mount
Number of Outputs	2
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Phases	1
Output Type	Transistor Driver
Package / Case	16-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	16-SOIC
Synchronous Rectifier	False
Topology	Forward Converter, Flyback, Push-Pull, Half-Bridge, Full-Bridge, Boost, Buck
Voltage - Supply (Vcc/Vdd) [Max]	40 V
Voltage - Supply (Vcc/Vdd) [Min]	7 V

TL494 Series

Part	Operating Temperature [Max]	Operating Temperature [Min]	Output Phases	Frequency - Switching [Max]	Frequency - Switching [Min]	Mounting Type	Control Features	Output Type	Function	Output Configuration	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Number of Outputs	Topology	Duty Cycle (Max) [Max]	Package / Case	Package / Case [x]	Package / Case [y]	Supplier Device Package	Package / Case [custom]	Package / Case [custom]	Package / Case	Package / Case
Texas Instruments TL494CDRE4	70 °C	0 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SOIC	0.154 in	3.9 mm	16-SOIC
Texas Instruments TL494IDRG4	85 °C	-40 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SOIC	0.154 in	3.9 mm	16-SOIC
Texas Instruments TL494CDBR	70 °C	0 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SSOP			16-SSOP	0.209 in	5.3 mm
Texas Instruments TL494CD	70 °C	0 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SOIC	0.154 in	3.9 mm	16-SOIC
Texas Instruments TL494ING4	85 °C	-40 °C	1	300 kHz	1 kHz	Through Hole	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-DIP			16-PDIP			0.3 in	7.62 mm
Texas Instruments TL494CDBRE4	70 °C	0 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SSOP			16-SSOP	0.209 in	5.3 mm
Texas Instruments TL494CNS	70 °C	0 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SOIC			16-SO			0.209 "	5.3 mm
Texas Instruments TL494CNG4	70 °C	0 °C	1	300 kHz	1 kHz	Through Hole	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-DIP			16-PDIP			0.3 in	7.62 mm
Texas Instruments TL494CNSR	70 °C	0 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SOIC			16-SO			0.209 "	5.3 mm
Texas Instruments TL494ID	85 °C	-40 °C	1	300 kHz	1 kHz	Surface Mount	Dead Time Control Frequency Control	Transistor Driver	Step-Down Step-Up Step-Up/Step-Down	Positive	7 V	40 V	2	Boost Buck Flyback Forward Converter Full-Bridge Half-Bridge Push-Pull	45 %	16-SOIC	0.154 in	3.9 mm	16-SOIC

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Arrow	N/A	1	$ 0.43
Digikey	Tube	1	$ 1.93
		10	$ 1.23
		25	$ 1.04
		100	$ 0.83
		250	$ 0.73
		500	$ 0.67
		1000	$ 0.62
Texas Instruments	TUBE	1	$ 1.08
		100	$ 0.74
		250	$ 0.57
		1000	$ 0.38

Description

General part information

TL494 Series

The TL494 device incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application.

The TL494 device contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.

The error amplifiers exhibit a common-mode voltage range from –0.3 V to VCC– 2 V. The dead-time control comparator has a fixed offset that provides approximately 5% dead time. The on-chip oscillator can be bypassed by terminating RT to the reference output and providing a sawtooth input to CT, or it can drive the common circuits in synchronous multiple-rail power supplies.