TL494CN Part Information
Details for TL494CN by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
Part Description
The TL494 device incorporates all the functions required in the construction of a pulse-widthmodulation (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. The uncommitted output transistors provide either common-emitter or emitter-follower output capability. The TL494 device provides for push-pull or singleended output operation, which can be selected through the output-control function. The architecture of this device prohibits the possibility of either output being pulsed twice during push-pull operation. The TL494C device is characterized for operation from 0°C to 70°C. The TL494I device is characterized for operation from –40°C to 85°C.
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Part Features
- Circuit Architecture Allows Easy Synchronization
- Complete PWM Power-Control Circuitry
- Internal Circuitry Prohibits Double Pulse at Either Output
- Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance
- Output Control Selects Single-Ended or Push-Pull Operation
- Uncommitted Outputs for 200-mA Sink or Source Current
- Variable Dead Time Provides Control Over Total Range
Part Specifications
Input Voltage | 13V |
Output Voltage | 40V |
Output Current | 200mA |
Supply Voltage Min | 7V |
Supply Voltage Max | 40V |
Controller IC Case Style | DIP |
No. of Pins | 16Pins |
Frequency | 300kHz |
Operating Temperature Min | 0°C |
Operating Temperature Max | 70°C |
Product Range | TL494 |
Automotive Qualification Standard | - |
MSL | - |
SVHC | No SVHC (27-Jun-2018) |
IC Generic Number | 494 |
IC Temperature Range | Commercial |
Operating Temperature Range | 0°C to +70°C |
Output Current Max | 0.2A |
Output Type | Voltage |
Supply Voltage Range | 7V to 40V |
Termination Type | Through Hole |
Alternative Part Descriptions
- PWM Control Circuit TL494CN | RS Components
- SWITCHED MODE CONTROLLER, DIP, 494; Input Voltage:13V; Output Voltage:40V; Output Current:200mA; Supply Voltage Min:7V; Supply Voltage Max:40V; Controller IC Case Style:DIP; No. of Pins:16Pins; Frequency:300kHz; Operating TemperatureRoHS Compliant: Yes | Newark Electronics
- 40V, 0.2A 300KHz PWM controller | Texas Instruments
- Switching Controller [Texas Instruments] TL494CN Switching Controller | Distrelec