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Controladores para LED de retroiluminación

TPS60230

ACTIVO

Bomba de carga regulada por corriente de 125 mA y 5 canales para retroiluminación LED blanca en QFN

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TPS60230

ACTIVO
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Detalles del producto

Number of channels 5 Vin (min) (V) 2.7 Vin (max) (V) 6.5 Vout (min) (V) 2.7 Vout (max) (V) 6.5 Type Capacitive Switching frequency (max) (kHz) 1250 Duty cycle (max) (%) 100 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost Features Analog Dimming, Analog/PWM mixed dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, Soft Start, Synchronous Rectification, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 5 Vin (min) (V) 2.7 Vin (max) (V) 6.5 Vout (min) (V) 2.7 Vout (max) (V) 6.5 Type Capacitive Switching frequency (max) (kHz) 1250 Duty cycle (max) (%) 100 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost Features Analog Dimming, Analog/PWM mixed dimming, Direct PWM Dimming, Enable/Shutdown, Fault Detection, Integrated Switch, Load Disconnect During Shutdown, Soft Start, Synchronous Rectification, Thermal shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
VQFN (RGT) 16 9 mm² (3 mm × 3 mm)
  • Regulated Output Current With 0.3% Matching Over Temperature
  • Drives up to 5 LEDs at 25 mA Each
  • LED Brightness Control Through PWM Control Signal
  • High Efficiency by Fractional Conversion With 1x and 1.5x Modes
  • 1 MHz Switching Frequency
  • 2.7 V to 6.5 V Operating Input Voltage Range
  • Internal Softstart Limits Inrush Current
  • Low Input Ripple and Low EMI
  • Overcurrent and Overtemperature Protected
  • Undervoltage Lockout With Hysteresis
  • Ultra-Small 3mm × 3mm QFN Package
  • APPLICATIONS
    • White LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and Camcorders
    • Key Backlight
  • Regulated Output Current With 0.3% Matching Over Temperature
  • Drives up to 5 LEDs at 25 mA Each
  • LED Brightness Control Through PWM Control Signal
  • High Efficiency by Fractional Conversion With 1x and 1.5x Modes
  • 1 MHz Switching Frequency
  • 2.7 V to 6.5 V Operating Input Voltage Range
  • Internal Softstart Limits Inrush Current
  • Low Input Ripple and Low EMI
  • Overcurrent and Overtemperature Protected
  • Undervoltage Lockout With Hysteresis
  • Ultra-Small 3mm × 3mm QFN Package
  • APPLICATIONS
    • White LED Backlight for Color Displays in Cellular Phones, Smart Phones, PDAs, Handheld PCs, Digital Cameras, and Camcorders
    • Key Backlight

The TPS60230 charge pump is optimized for white LED supplies in backlit color display applications. The device provides a constant current, set by an external resistor, for each LED. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. The TPS60230 provides up to 25 mA per LED, for a total of 125 mA, for input voltages ranging from 3.1 V to 6.5 V. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combi- nation with very low dropout current sources. Additionally, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. The TP60230 switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package to keep board space to a minimum.

The TPS60230 charge pump is optimized for white LED supplies in backlit color display applications. The device provides a constant current, set by an external resistor, for each LED. The supply voltage ranges from 2.7 V to 6.5 V and is ideally suited for all applications powered by a single LI-Ion battery cell or three to four NiCd, NiMH, or Alkaline battery cells. The TPS60230 provides up to 25 mA per LED, for a total of 125 mA, for input voltages ranging from 3.1 V to 6.5 V. High efficiency is achieved by utilizing a 1x/1.5x fractional conversion technique in combi- nation with very low dropout current sources. Additionally, the current controlled charge pump ensures low input current ripple and EMI. Only two external 1 µF and two 0.47 µF capacitors are required to build a complete small and low cost power supply solution. The TP60230 switches at 1 MHz operating frequency and is available in a small 16-pin QFN (RGT) package to keep board space to a minimum.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS60230: White LED Charge Pump Current Source with PWM Brightness Control datasheet (Rev. A) 25/05/2004
Informe Common LED Functions and LED Driver Design Considerations 21/09/2020
Nota sobre la aplicación Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11/12/2018
Guía de selección Power Management Guide 2018 (Rev. R) 25/06/2018
Nota sobre la aplicación Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15/06/2017
Nota sobre la aplicación TPS60230 WLED Charge Pump 9/11/2005

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

TPS60230EVM-047 — Evaluación TPS60230EVM-047

The Texas Instruments TPS60230EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60230. The TPS60230 is an efficient charge-pump-based current sink that can drive up to five white LEDs with 25mA each.

The EVM is specifically designed and optimized to (...)

Guía del usuario: PDF
Productos y hardware compatibles
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Placa de evaluación

TPS60231EVM-047 — Módulo de evaluación TPS60231

The Texas Instruments TPS60231EVM-047 evaluation module (EVM) helps designers evaluate the operation and performance of the TPS60231. The TPS60231 is an efficient charge-pump-based current sink that can drive up to three white LEDs with 25mA each.

The EVM is specifically designed and optimized to (...)

Guía del usuario: PDF
Productos y hardware compatibles
En inventario
Límite:
??asset.out-of-stock-ti_es_MX??
No disponible
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RGT) 16 Ultra Librarian
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