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TL494
+物料清單onsemi ANA SMPS DB END HI FREQ
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製造商安森美
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製造商部分 #TL494
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有存貨22174
365 天品質保證
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90-日售後保障
正品保證
規格
| 屬性 | 價值 |
| Packaging | Reel |
| StandardPackQty | 2500 |
概述
Description
Key features include a wide supply voltage range (7V to 40V), adjustable dead-time control, and the capability to operate in both single-ended and push-pull configurations. The device's flexibility is enhanced through its adjustable reference voltage and error amplifier, which allow precise control over the output voltage. The TL494 is particularly favored for its reliability and ease of integration in switch-mode power supply (SMPS) designs, DC-DC converters, and other power management systems.
In summary, the TL494 simplifies the design of power control circuits, making it a staple in electronics that require efficient power regulation and conversion.
Equivalent
Features
1. Dual Output Control: It provides two independently controlled outputs, suitable for push-pull, half-bridge, or full-bridge configurations.
2. Built-in Error Amplifiers: Two error amplifiers with common-mode input voltage range near ground, allowing flexibility in control configurations.
3. Adjustable Dead Time: Offers a dead-time control input to prevent overlap in driving signals, enhancing efficiency and reducing cross-conduction.
4. Oscillator Circuit: Features an internal oscillator that can be synchronized with external signals, with frequency set by external timing components.
5. Voltage Reference: Includes a 5V reference voltage source with tight regulation for stable operation.
6. Under-Voltage Lockout (UVLO): Provides protection by disabling the outputs when supply voltage is too low.
7. Low Standby Current: Ensures energy efficiency, particularly in battery-powered applications.
8. Wide Supply Voltage Range: Operates from 7V to 40V, allowing for use in various power supply designs.
These features make the TL494 a popular choice for designing reliable and efficient power management systems.
Pinout
1. Non-inverting Input of Error Amplifier 1
2. Inverting Input of Error Amplifier 1
3. Non-inverting Input of Error Amplifier 2
4. Inverting Input of Error Amplifier 2
5. Feedback
6. DTC (Dead-Time Control)
7. CT (Timing Capacitor)
8. RT (Timing Resistor)
9. GND (Ground)
10. C1 (Collector of Output Transistor 1)
11. E1 (Emitter of Output Transistor 1)
12. E2 (Emitter of Output Transistor 2)
13. C2 (Collector of Output Transistor 2)
14. VCC (Supply Voltage)
15. VC (Output Control)
16. Vref (Reference Voltage)
The TL494 integrates features such as error amplifiers, a PWM comparator, and an oscillator, making it suitable for controlling the duty cycle of the PWM output to regulate power effectively.
Manufacturer
Application
1. Switching Power Supplies: Used for controlling DC-DC converters and stabilizing output voltage.
2. Inverters: Employed in power inverters to manage the conversion from DC to AC.
3. Motor Control: Facilitates precise speed control in DC motor applications.
4. Battery Chargers: Utilized for efficient and controlled battery charging systems.
5. Voltage Regulation: Ensures consistent voltage levels in various electronic devices.
Its flexibility, reliability, and wide input voltage range make it suitable for numerous power management applications.