LM2776

AKTIV

Inverter mit geschaltetem Kondensator

Produktdetails

Iout (max) (A) 0.2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Type Charge pump, Converter Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Enable, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed Vout (min) (V) -5.5 Vout (max) (V) -2.7 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0001
Iout (max) (A) 0.2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Type Charge pump, Converter Switching frequency (min) (kHz) 1700 Switching frequency (max) (kHz) 2300 Features Enable, Light Load Efficiency Mode, Output discharge, Synchronous Rectification, UVLO Fixed Vout (min) (V) -5.5 Vout (max) (V) -2.7 Rating Catalog Operating temperature range (°C) -40 to 85 Iq (typ) (A) 0.0001
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.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet LM2776 Switched Capacitor Inverter datasheet (Rev. B) PDF | HTML 07 Feb 2017
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 Mai 2022
Technical article Low-noise charge pumps make it easy to create negative voltages PDF | HTML 30 Aug 2017
Technical article Pump it up quietly PDF | HTML 19 Feb 2016
Technical article Pump it up with charge pumps – Part 1 PDF | HTML 01 Feb 2016
White paper The Forgotten Converter 15 Jun 2015
User guide Using the LM2776 Evaluation Module 19 Mai 2015

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

LM2776EVM — Evaluierungsmodul für Ladungspumpen-Inverter LM2776

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 (...)

Benutzerhandbuch: PDF
Simulationsmodell

LM2776 Unencrypted PSpice Transient Model Package (Rev. A)

SNVMAR2A.ZIP (80 KB) - PSpice Model
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Design guide: PDF
Schaltplan: PDF
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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
Schaltplan: PDF
Gehäuse Pins Herunterladen
SOT-23 (DBV) 6 Optionen anzeigen

Bestellen & Qualität

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