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LM2751

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Controlador LED blanco de capacitor conmutado de 1.5 X y 2 X regulados

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LM2751

ACTIVO
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Detalles del producto

Number of channels 1 LED current per channel (mA) 150 LED configuration Parallel, Series, Single Program memory No Topology Boost Programmable ramp control No Vin (min) (V) 2.8 Vin (max) (V) 5.5 Iout (max) (A) 0.15 Features Enable/Shutdown, GPIO interface Iq (typ) (mA) 1 Shutdown current (ISD) (typ) (µA) 0.77 Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 1 LED current per channel (mA) 150 LED configuration Parallel, Series, Single Program memory No Topology Boost Programmable ramp control No Vin (min) (V) 2.8 Vin (max) (V) 5.5 Iout (max) (A) 0.15 Features Enable/Shutdown, GPIO interface Iq (typ) (mA) 1 Shutdown current (ISD) (typ) (µA) 0.77 Operating temperature range (°C) -40 to 85 Rating Catalog
WSON (DSC) 10 9 mm² 3 x 3
  • Regulated Output Options: 4.5V, 5.0V
  • Output Voltage Regulated Within 3%
  • Peak Efficiency Over 90%
  • 150mA (4.5V) or 80mA (5.0V) Output Current Capability
  • Input Voltage Range: 2.8V to 5.5V
  • Low Input and Output Voltage Ripple
  • <1µA Typical Shutdown Current
  • Small Solution Size - NO INDUCTOR
  • Programmable 725kHz, 300kHz, 37kHz, or 9.5kHz Switching Frequencies
  • 10-pin SON No-Pullback Package: 3mm × 3mm × 0.8mm

All trademarks are the property of their respective owners.

  • Regulated Output Options: 4.5V, 5.0V
  • Output Voltage Regulated Within 3%
  • Peak Efficiency Over 90%
  • 150mA (4.5V) or 80mA (5.0V) Output Current Capability
  • Input Voltage Range: 2.8V to 5.5V
  • Low Input and Output Voltage Ripple
  • <1µA Typical Shutdown Current
  • Small Solution Size - NO INDUCTOR
  • Programmable 725kHz, 300kHz, 37kHz, or 9.5kHz Switching Frequencies
  • 10-pin SON No-Pullback Package: 3mm × 3mm × 0.8mm

All trademarks are the property of their respective owners.

The LM2751 is a constant frequency switched capacitor charge pump with regulated output voltage options of 4.5V, and 5.0V. Over the input voltage range of 2.8V to 5.5V the LM2751 provides up to 150mA of output current and requires only four low-cost ceramic capacitors.

The LM2751 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or 2. The proper gain for maintaining regulation is chosen so that efficiency is maximized over the input voltage range.

LM2751 uses constant frequency pre-regulation to minimize conducted noise on the input and provide a predictable switching frequency. The switching frequency is programmable to 725kHz, 300kHz, 37kHz, or 9.5kHz.

LM2751 is available in a 10-pin SON No-Pullback Package.

The LM2751 is a constant frequency switched capacitor charge pump with regulated output voltage options of 4.5V, and 5.0V. Over the input voltage range of 2.8V to 5.5V the LM2751 provides up to 150mA of output current and requires only four low-cost ceramic capacitors.

The LM2751 provides excellent efficiency without the use of an inductor by operating the charge pump in a gain of 3/2 or 2. The proper gain for maintaining regulation is chosen so that efficiency is maximized over the input voltage range.

LM2751 uses constant frequency pre-regulation to minimize conducted noise on the input and provide a predictable switching frequency. The switching frequency is programmable to 725kHz, 300kHz, 37kHz, or 9.5kHz.

LM2751 is available in a 10-pin SON No-Pullback Package.
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Documentación técnica

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Tipo Título Fecha
* Data sheet LM2751 Regulated 2X, 1.5X Switched Capacitor White LED Driver datasheet (Rev. B) 01 may 2013
White paper Common LED Functions and LED Driver Design Considerations 21 sep 2020
Application note How to Select a RGB LED Driver 08 ago 2019

Diseño y desarrollo

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