Inicio Gestión de la energía Convertidores de CA/CC y CC/CC (FET integrado)

LM2776

ACTIVO

Inversor de capacitor conmutado

Detalles del producto

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 Vout (min) (V) -5.5 Vout (max) (V) -2.7 Iq (typ) (A) 0.0001
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 Vout (min) (V) -5.5 Vout (max) (V) -2.7 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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Documentación técnica

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Tipo Título Fecha
* 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 may 2022
Technical article Low-noise charge pumps make it easy to create negative voltages PDF | HTML 30 ago 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 may 2015

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

LM2776EVM — Módulo de evaluación de inversor con bomba de carga 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 (...)

Guía del usuario: PDF
Modelo de simulación

LM2776 Unencrypted PSpice Transient Model Package (Rev. A)

SNVMAR2A.ZIP (80 KB) - PSpice Model
Diseños de referencia

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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
Esquema: PDF
Diseños de referencia

TIDA-01063 — Diseño de referencia de medición de corriente AC de alta precisión con sensor de bobina Rogowski de

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
Esquema: PDF
Paquete Pasadores Descargar
SOT-23 (DBV) 6 Ver opciones

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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