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LM2765

現行

50-kHz 切換式電容器電壓倍增器

產品詳細資料

Rating Catalog Iout (max) (A) 0.02 Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 11 Vout (min) (V) 3.6 Features Enable, Unregulated Switching frequency (min) (kHz) 20 Switching frequency (max) (kHz) 100 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 130 Type Charge pump
Rating Catalog Iout (max) (A) 0.02 Vin (max) (V) 5.5 Vin (min) (V) 1.8 Vout (max) (V) 11 Vout (min) (V) 3.6 Features Enable, Unregulated Switching frequency (min) (kHz) 20 Switching frequency (max) (kHz) 100 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 130 Type Charge pump
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Doubles Input Supply Voltage
  • SOT-23 6-Pin Package
  • 20-Ω Typical Output Impedance
  • 90% Typical Conversion Efficiency at 20 mA
  • 0.1-µA Typical Shutdown Current
  • Doubles Input Supply Voltage
  • SOT-23 6-Pin Package
  • 20-Ω Typical Output Impedance
  • 90% Typical Conversion Efficiency at 20 mA
  • 0.1-µA Typical Shutdown Current

The LM2765 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of 1.8 V to 5.5 V. Two low-cost capacitors and a diode are used in this circuit to provide up to 20 mA of output current.

The LM2765 operates at 50-kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 130 µA (operating efficiency greater than 90% with most loads) and 0.1-µA typical shutdown current, the LM2765 provides ideal performance for battery powered systems. The device is manufactured in a 6-pin SOT-23 package.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM2765 CMOS charge-pump voltage converter operates as a voltage doubler for an input voltage in the range of 1.8 V to 5.5 V. Two low-cost capacitors and a diode are used in this circuit to provide up to 20 mA of output current.

The LM2765 operates at 50-kHz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 130 µA (operating efficiency greater than 90% with most loads) and 0.1-µA typical shutdown current, the LM2765 provides ideal performance for battery powered systems. The device is manufactured in a 6-pin SOT-23 package.

For all available packages, see the orderable addendum at the end of the data sheet.

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* Data sheet LM2765 Switched-Capacitor Voltage Converter datasheet (Rev. D) PDF | HTML 2016年 9月 26日

設計與開發

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參考設計

PMP30826 — 具有主動式電池平衡的離線超級電容器備用電源供應器

此參考設計可在斷電期間提供備用電壓。它直接從電源電壓 (96 VAC - 272 VAC) 管理超級電容器的充電。UCC28740 提供定電壓 (CV) 及定電流 (CC) 輸出穩壓。超級電容器電容和電壓決定可用於備用的能源。
Test report: PDF
電路圖: PDF
參考設計

TIDA-00319 — 高速數位輸出 PLC 模組參考設計

這款適用於可編程邏輯控制器 (PLC) 的高速數位輸出參考設計,展示了使用標準低壓側驅動器以及透過隔離功率級供電背板的低成本、簡易高速單端數位輸出模組。馬達控制和定位應用需要高速數位輸出模組。
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 6 Ultra Librarian

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