首頁 電源管理 AC/DC 和 DC/DC 轉換器 (整合式 FET)
首頁
電源管理
AC/DC 和 DC/DC 轉換器 (整合式 FET)

LM2776

現行

切換式電容器逆變器

立即訂購
產品規格表

LM2776

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 85 Type Charge pump, Converter Iout (max) (A) 0.2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Enable, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed, Unregulated Vout (min) (V) -5.5 Vout (max) (V) -2.7 Iq (typ) (µA) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Type Charge pump, Converter Iout (max) (A) 0.2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Enable, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed, Unregulated Vout (min) (V) -5.5 Vout (max) (V) -2.7 Iq (typ) (µA) 100
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Input Voltage: 2.7 V to 5.5 V
  • 200-mA Output Current
  • Inverts Input Supply Voltage
  • Low-Current PFM Mode Operation
  • 2-MHz Switching Frequency
  • Greater than 90% Efficiency
  • Current Limit and Thermal Protection
  • No Inductors
  • Input Voltage: 2.7 V to 5.5 V
  • 200-mA Output Current
  • Inverts Input Supply Voltage
  • Low-Current PFM Mode Operation
  • 2-MHz Switching Frequency
  • Greater than 90% Efficiency
  • Current Limit and Thermal Protection
  • No Inductors

The LM2776 CMOS charge-pump voltage converter inverts a positive voltage in the range from 2.7 V to 5.5 V to the corresponding negative voltage. The LM2776 uses three low-cost capacitors to provide 200 mA of output current without the cost, size, and electromagnetic interference (EMI) related to inductor-based converters.

With an operating current of only 100 µA and operating efficiency greater than 90% at most loads, the LM2776 provides ideal performance for battery-powered systems requiring a high power negative power supply.

The LM2776 has been placed in TI’s 6-pin SOT-23 to maintain a small form factor.

The LM2776 CMOS charge-pump voltage converter inverts a positive voltage in the range from 2.7 V to 5.5 V to the corresponding negative voltage. The LM2776 uses three low-cost capacitors to provide 200 mA of output current without the cost, size, and electromagnetic interference (EMI) related to inductor-based converters.

With an operating current of only 100 µA and operating efficiency greater than 90% at most loads, the LM2776 provides ideal performance for battery-powered systems requiring a high power negative power supply.

The LM2776 has been placed in TI’s 6-pin SOT-23 to maintain a small form factor.
filter 尋找其它 AC/DC 和 DC/DC 轉換器 (整合式 FET)
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 7
類型 標題 日期
* Data sheet LM2776 Switched Capacitor Inverter datasheet (Rev. B) PDF | HTML 2017年 2月 7日
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 2022年 5月 23日
Technical article Low-noise charge pumps make it easy to create negative voltages PDF | HTML 2017年 8月 30日
Technical article Pump it up quietly PDF | HTML 2016年 2月 19日
Technical article Pump it up with charge pumps – Part 1 PDF | HTML 2016年 2月 1日
White paper The Forgotten Converter 2015年 6月 15日
User guide Using the LM2776 Evaluation Module 2015年 5月 19日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM2776EVM — LM2776 電荷泵逆變器評估模組

The LM2776EVM aids in evaluation of the LM2776 Charge Pump Inverter.  The 2 MHz switched capacitor  boost provides up to 200mA of output current utilizing 3 small external capacitors.  With a low current PFM or ECO mode, the LM2776 draws a minimal load from the power supply when the (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM2776 Unencrypted PSpice Transient Model Package (Rev. A)

SNVMAR2A.ZIP (80 KB) - PSpice Model
下載
參考設計

TIDA-00626 — 採用整合式合成器和突波抑制功能的 9.8 GHz 射頻 CW 訊號產生器參考設計

This design is a 9.8-GHz wideband, low-phase noise, integrated continuous wave (CW) RF signal generator with versatile spur reduction technique. The output level can be programmed from -32 dBm to 14.5 dBm in 0.5-dB steps. This signal generator can be used as local oscillator for applications, such (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-01063 — 採用 PCB Rogowski 線圈感測器的高準確度 AC 電流量測參考設計

TIDA-01063 is a reference design for current sensing using a PCB Rogowski Coil sensor to achieve very good linearity for wide measurement range at very low system BOM cost. PCB Rogowski sensor is advantageous for isolated current measurement due to very high bandwidth of 20 MHz and fast settling (...)
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
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片