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型号：TL494 (开关稳压器控制电路）
封装：SOP-16
TL494 开关稳压器的概述：
The TL494 is a voltage mode pulse width modulation switching regulator control circuit designed primarily for power supply control.
The TL494 consists of a reference voltage circuit,two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, and an output control circuit. The precision of voltage reference (VREF) is improved up to ±1% through trimming and this provides a better output voltage regulation. The TL494 provides for push pull or single-ended output operation, which can be selected through the output control.
The TL494 is available in standard packages of DIP-16 and SOP-16.
TL494 开关稳压器的特性：
1、Stable 5V Reference Voltage Trimmed to ±1.0% Accuracy
2、 Uncommitted Output TR for 200mA Sink or Source Current
3、Single-End or Push-Pull Operation Selected by Output Control
4、Internal Circuitry Prohibits Double Pulse at Either Output
5、Complete PWM Control Circuit with Variable Duty Cycle
6、On-Chip Oscillator with Master or Slave Operation
TL494 开关稳压器的应用领域:
1、SMPS
2、Back Light Inverter
3、Charger
询价
