Controllers | KA7553A

可编程频率最高可达 600khz 的 PWM 控制器

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KA7552A/KA7553A 是适用于较宽运行频率范围的开关电源控制集成电路。内部电路包括逐脉冲电流限制、保护、外部触发的开/关控制、低待机电流、软启动以及用于驱动功率 MOSFET 的高电流图腾柱输出。KA7552A 的最大占空比为 70％，KA7553A 的最大占空比为 46％。当占空比最大时，KA7552A 和 KA7553A 中引脚 2 和引脚 8 的输入阈值电压不相同。

  • 其他消费型电子

  • 内置驱动电路，可直接连接 Power MOSFET (lO = ±1.5 A)
  • 宽工作频率范围(5KHz - 600KHz)
  • 逐脉冲过流限制
  • 过载保护
  • 外部触发器提供的开/关控制
  • 内部UVLO
  • 低待机电流（典型值90uA）
  • 软启动电路

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可靠性数据

Die Related Summary Data

Device: KA7553A

Equivalent to wafer fab process: 9

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平均故障间隔时间/平均无故障时间（按小时计算）

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9

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314834549

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Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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