LM2663

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具有低電流關斷模式的 200mA 開關電容器電壓轉換器

產品詳情

Rating Catalog Iout (max) (A) 0.2 Vin (max) (V) 5.5 Vin (min) (V) 1.5 Vout (max) (V) 11 Vout (min) (V) -5.5 Features Enable, Unregulated Switching frequency (min) (kHz) 27.5 Switching frequency (max) (kHz) 75 Operating temperature range (°C) -40 to 85 Iq (typ) (μA) 1300 Type Charge pump
Rating Catalog Iout (max) (A) 0.2 Vin (max) (V) 5.5 Vin (min) (V) 1.5 Vout (max) (V) 11 Vout (min) (V) -5.5 Features Enable, Unregulated Switching frequency (min) (kHz) 27.5 Switching frequency (max) (kHz) 75 Operating temperature range (°C) -40 to 85 Iq (typ) (μA) 1300 Type Charge pump
SOIC (D) 8 29.4 mm2 4.9 x 6
  • Inverts or Doubles Input Supply Voltage
  • 3.5-Ω Typical Output Resistance
  • 86% Typical Conversion Efficiency at 200 mA
  • (LM2662) Selectable Oscillator Frequency:
    20 kHz/150 kHz
  • (LM2663) Low Current Shutdown Mode
  • Inverts or Doubles Input Supply Voltage
  • 3.5-Ω Typical Output Resistance
  • 86% Typical Conversion Efficiency at 200 mA
  • (LM2662) Selectable Oscillator Frequency:
    20 kHz/150 kHz
  • (LM2663) Low Current Shutdown Mode

The LM2662/LM2663 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5 V to 5.5 V to the corresponding negative voltage. The LM2662/LM2663 uses two low cost capacitors to provide 200 mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 300 µA and operating efficiency greater than 90% at most loads, the LM2662/LM2663 provides ideal performance for battery powered systems. The LM2662/LM2663 may also be used as a positive voltage doubler.

The oscillator frequency can be lowered by adding an external capacitor to the OSC pin. Also, the OSC pin may be used to drive the LM2662/LM2663 with an external clock. For LM2662, a frequency control (FC) pin selects the oscillator frequency of 20 kHz or 150 kHz. For LM2663, an external shutdown (SD) pin replaces the FC pin. The SD pin can be used to disable the device and reduce the quiescent current to 10 µA. The oscillator frequency for LM2663 is 150 kHz.

The LM2662/LM2663 CMOS charge-pump voltage converter inverts a positive voltage in the range of 1.5 V to 5.5 V to the corresponding negative voltage. The LM2662/LM2663 uses two low cost capacitors to provide 200 mA of output current without the cost, size, and EMI related to inductor based converters. With an operating current of only 300 µA and operating efficiency greater than 90% at most loads, the LM2662/LM2663 provides ideal performance for battery powered systems. The LM2662/LM2663 may also be used as a positive voltage doubler.

The oscillator frequency can be lowered by adding an external capacitor to the OSC pin. Also, the OSC pin may be used to drive the LM2662/LM2663 with an external clock. For LM2662, a frequency control (FC) pin selects the oscillator frequency of 20 kHz or 150 kHz. For LM2663, an external shutdown (SD) pin replaces the FC pin. The SD pin can be used to disable the device and reduce the quiescent current to 10 µA. The oscillator frequency for LM2663 is 150 kHz.
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類型 標題 下載最新的英語版本 日期
* 數據表 LM266x Switched Capacitor Voltage Converter 數據表 (Rev. E) PDF | HTML 2014年 10月 31日
白皮書 The Forgotten Converter 2015年 6月 15日
EVM 用戶指南 AN-1142 LM2661/3/4 Evaluation Board (Rev. C) 2013年 4月 30日

設計和開發

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評估板

LM2661-3-4EVAL — 開關電容器電壓轉換器

LM2661、LM2663 和 LM2664 是 CMOS 電荷泵電壓轉換器系列器件（表 2）。每個轉換器都使用兩個小型電容器來實現電壓反轉或電壓加倍，遠離基于電感器的轉換器的成本、尺寸和 EMI 困擾。每個器件都具有關斷功能，LM2661 和 LM2663 還提供從外部源運行時鐘振蕩器的功能。您還可以使用 LM2661 和 LM2663 上的外部電容器來降低時鐘速度。這些電路外形小巧、纖薄，非常適合手機、筆記本電腦、運算放大器電源、接口電源、醫療儀器、PDA 和手持儀器。

用戶指南: PDF
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SOIC (D) 8 Ultra Librarian

訂購和質量

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  • RoHS
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  • 器件標識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續可靠性監測
包含信息：
  • 制造廠地點
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