TL494 SOP-16 开关稳压器

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