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LINEAR TECHNOLOGY  LTC3219EUD#PBF  LED Driver, Charge Pump, 2.9V to 5.5V in, 9 Outputs, 850 kHz Switch. Freq., 5.04V/250 mA out, QFN-20

LINEAR TECHNOLOGY LTC3219EUD#PBF
Manufacturer Part No:
LTC3219EUD#PBF
Order Code:
1715229
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LTC3219EUD#PBF is a highly integrated multi-display LED Driver contains a high efficiency, low noise charge pump to provide power to nine universal LED current sources. The LTC3219 requires only five small ceramic capacitors to form a complete LED power supply and current controller. The maximum display currents are set by an internal precision current reference. Independent dimming, ON/OFF, blinking and gradation control for all current sources is achieved via the I²C serial interface. 6-bit linear DACs are available for adjusting brightness levels for each universal LED current source. The LTC3219 charge pump optimizes efficiency based on the voltage across the LED current sources. The device powers up in 1x mode and will automatically switch to boost mode whenever any enabled LED current source begins to enter dropout. The first dropout switches the IC into 1.5x mode and a subsequent dropout switches the LTC3219 into 2x mode.
  • Multimode charge pump provides up to 91% efficiency
  • Slew limited switching reduces conducted and radiated noise (EMI)
  • Internal current reference
  • Configurable ENU pin for asynchronous LED ON/OFF control
  • Automatic or forced mode switching
  • Internal soft-start limits inrush current
  • Short-circuit/thermal protection
  • Nine 28mA universal current sources with 64-step linear brightness control

Product Information

Device Topology:
Charge Pump
No. of Outputs:
9Outputs
Output Current:
250mA
Output Voltage:
5.04V
Driver Case Style:
QFN
No. of Pins:
20Pins
Input Voltage Min:
2.9V
Input Voltage Max:
5.5V
Switching Frequency:
850kHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Consumer Electronics
  • Imaging, Video & Vision
  • LED Lighting
  • Communications & Networking

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.0001

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