LTC3219

PRODUCTION

250mA Universal Nine Channel LED Driver

Data Sheet Product Selection Table
Part Models
2
1ku List Price
Starting From $2.41
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Part Details

  • Multimode Charge Pump Provides Up to 91% Efficiency
  • Slew Limited Switching Reduces Conducted and Radiated Noise (EMI)
  • Up to 250mA Total Output Current
  • Nine 28mA Universal Current Sources with 64-Step Linear Brightness Control
  • Independent On/Off, Brightness Level, Blinking and Gradation Control for Each Current Source Using 2-Wire I2C™ Interface
  • Internal Current Reference
  • Configurable ENU Pin for Asynchronous LED On/Off Control
  • Low Noise Charge Pump Operates in 1x, 1.5x or 2x Mode for Optimal Efficiency*
  • Automatic or Forced Mode Switching
  • Internal Soft-Start Limits Inrush Current
  • Short-Circuit/Thermal Protection
  • 3mm × 3mm 20-Lead QFN Plastic Package
LTC3219
250mA Universal Nine Channel LED Driver
4-LED Main, 2-LED Sub and RGB Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Application Note 1

Design Note 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
Digital Temperature Sensors 1
LTC2991
RECOMMENDED FOR NEW DESIGNS Octal I2C Voltage, Current, and Temperature Monitor
Serial Bus Buffers, Extenders, and Accelerators 2
LTC4311
PRODUCTION Low Voltage I2C/SMBus Accelerator
LTC4317
PRODUCTION Dual I2C/SMBus Address Translator
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Evaluation Kits

eval board
schematic 1
DC1055A

LTC3219EUD Demo Board | 9-Channel Charge Pump LED Driver, 2.9V ≤ VIN ≤ 5.5V, VLED = up to 5V @ 28mA per LED (DC590 Requires)

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Product Details

Demonstration circuit 1055 is a 250mA Universal Nine Channel Multimode (1x, 1.5x, 2x) Charge Pump LED Driver with two RGB displays and three white LEDs featuring the LTC3219. The LTC3219 is a low noise charge pump designed to drive nine universal LED current sources. The input voltage range is 2.9V to 5.5V. Each channel provides 28mA of LED current.

The LTC3219 requires only five small ceramic capacitors to form a complete LED power supply and current controller. The maximum display currents are set with an internal precision current reference. On/Off blinking, gradation, and intensity are achieved via an I2C serial interface. There are 64 dimming states available for the universal LEDs. The DC590 controller board is required for proper operation.
DC1055A
LTC3219EUD Demo Board | 9-Channel Charge Pump LED Driver, 2.9V ≤ VIN ≤ 5.5V, VLED = up to 5V @ 28mA per LED (DC590 Requires)
DC1055A - Schematic

Latest Discussions

5 Years Ago
RE: LTC3219 charge pump 1X without flying caps?
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