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LM2524D - 产品图解：
LM2524D-稳压脉宽调制器
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TI产品 - LM2524D介绍

LM2524D - 稳压脉宽调制器

LM2524D是TI德州仪器公司的一款控制器（外部开关）产品，LM2524D是稳压脉宽调制器，本站介绍了LM2524D的封装应用图解、特点和优点、功能等，并给出了与LM2524D相关的TI元器件型号供参考。

LM2524D - 稳压脉宽调制器 - 控制器（外部开关） - DC/DC开关稳压器 - 德州仪器

产品描述

The LM3524D family is an improved version of the industry standard LM3524. It has improved specifications and additional features yet is pin for pin compatible with existing 3524 families. New features reduce the need for additional external circuitry often required in the original version.

The LM3524D has a ±1% precision 5V reference. The current carrying capability of the output drive transistors has been raised to 200 mA while reducing VCEsat and increasing VCE breakdown to 60V. The common mode voltage range of the error-amp has been raised to 5.5V to eliminate the need for a resistive divider from the 5V reference.

In the LM3524D the circuit bias line has been isolated from the shut-down pin. This prevents the oscillator pulse amplitude and frequency from being disturbed by shut-down. Also at high frequencies (?300 kHz) the max. duty cycle per output has been improved to 44% compared to 35% max. duty cycle in other 3524s.

In addition, the LM3524D can now be synchronized externally, through pin 3. Also a latch has been added to insure one pulse per period even in noisy environments. The LM3524D includes double pulse suppression logic that insures when a shut-down condition is removed the state of the T-flip-flop will change only after the first clock pulse has arrived. This feature prevents the same output from being pulsed twice in a row, thus reducing the possibility of core saturation in push-pull designs.

产品特性

  • Fully Interchangeable With Standard LM3524 Family
  • ±1% Precision 5V Reference With Thermal Shut-Down
  • Output Current to 200 mA DC
  • 60V Output Capability
  • Wide Common Mode Input Range for Error-Amp
  • One Pulse per Period (Noise Suppression)
  • Improved Max. Duty Cycle at High Frequencies
  • Double Pulse Suppression
  • Synchronize Through Pin 3

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