5A,2.4MHz,可数字编程的 TinyBuck® 稳压器

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FAN53555 是一款步降开关稳压器,可基于 2.5 V 到 5.5 V 的输入电压供应提供可数字编程的输出。该输出电压通过 I2C 接口进行编程,能够驱动最高 3.4 MHz 的频率。FAN53555 使用带有同步整流的专属结构,能够以 80% 以上的能效提供 5 A 连续电流,同时还能在低至 10 mA 的负载电流下提供 80% 以上的能效。可通过 05 选件提供高达 6.5 A 的脉冲电流。该稳压器的标称固定运行频率为 2.4 MHz,会将输出电感的外部组件值降至 330 nH,将输出电容器的外部组件值降至 20 µF。还可以增加附加输出电容,以改善瞬变负载下的调节,而且不会影响稳定性。还可以对附加输出电容使用高达 1.2 µH 的电感。在中等和轻型负载条件下,使用脉频调制 (PFM) 以节能模式运行该器件,且典型静止电流为 60 µA。即使静止电流如此之低,该零件在较大负载摆幅期间仍然具有绝佳的瞬变响应。在更高负载下,该系统则会自动切换为固定频率控制,在 2.4 MHz 下运行。在关断模式下,电源电流降至 1 µA 以下,减少了功耗。如果需要恒定频率,则可以禁用 PFM 模式。FAN53526 采用 20 凸块,1.6 x 2 mm,WLCSP 封装。

  • 固定频率操作: 2.4 MHz
  • 同级最佳的负载瞬态响应
  • 连续输出电流能力: 5 A
  • 脉冲电流能力: 6.5 A (05 选件)
  • 2.3 V 至 5.5 V 的输入电压范围
  • 数字可编程输出电压:
  • 00/01/03/05/08 选件: 0.60-1.23 V(10 mV 步幅)
  • 04/042 选件: 0.603-1.411 V(12.826 mV 步幅)
  • 可编程电压转换压摆率
  • 传输速率高达3.4Mbps的 I2C 兼容接口
  • 用于轻载的高效率PFM模式
  • PFM 模式下的静态电流: 60 µA(典型值)
  • 内部软启动
  • 输入欠压闭锁(UVLO)
  • 20 焊球,晶圆级芯片封装(WLCSP)
  • 热关断和过载保护

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FAN53555BUC05X

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WLCSP-20

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FAN53555BUC08X

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260

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3000

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FAN53555BUC09X

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3000

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FAN53555BUC13X

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FAN53555BUC18X

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3000

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FAN53555BUC23X

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FAN53555BUC24X

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FAN53555BUC79X

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FAN53555UC00X

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3000

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FAN53555UC01X

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3000

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FAN53555UC03X

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FAN53555UC042X

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FAN53555UC04X

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Pb

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WLCSP-20

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260

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3000

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$0.3982

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FAN53555UC05X

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Pb

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H

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WLCSP-20

1

260

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3000

N

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FAN53555UC08X

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Pb

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N

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FAN53555UC09X

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Pb

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260

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3000

N

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FAN53555UC13X

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260

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3000

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FAN53555UC18X

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Pb

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3000

N

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FAN53555UC24X

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Pb

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H

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WLCSP-20

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260

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3000

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2.5

5.5

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5

80

2400

$0.3618

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