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MIC4811

High Current Six Channel WLED Driver w/ DAM and Ultrafast PWM Control

Status: In Production

Features:

  • High efficiency (no voltage boost losses)
  • Ultra Fast PWM™ control (200Hz to 500kHz)
  • Input voltage range: 3.0V to 5.5V
  • LED current range up to 50mA per channel
  • Programmable LED current with external resistor
  • Dropout of 100mV at 50mA
  • Matching better than ±1% (typical)
  • Current accuracy better than ±1% (typical)
  • Maintains proper regulation regardless of how many channels are utilized
  • 10-pin MSOP package
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MIC4811 is a high efficiency linear White LED (WLED) driver designed to drive up to six high current WLEDs for signage lighting. The MIC4811 provides the highest possible efficiency as this architecture has no switching losses present in traditional charge pumps or inductive boost circuits. The MIC4811 provides six linear drivers which maintain constant current for up to six WLEDs. It features a typical dropout of 100mV at 50mA.

The MIC4811 features Dynamic Average Matching™ (DAM™) which is specifically designed to provide optimum matching across all WLEDs. The high accuracy (±1% typical) current regulated WLED channels ensure uniform display illumination under all conditions. The brightness is controlled through an Ultra Fast PWM™ interface operating down to less than 1% duty cycle.

The MIC4811 is available in a 10-pin MSOP package with a junction temperature range of -40°C to +125°C

Additional Features
    • High efficiency (no voltage boost losses)
    • Ultra Fast PWM™ control (200Hz to 500kHz)
    • Input voltage range: 3.0V to 5.5V
    • LED current range up to 50mA per channel
    • Programmable LED current with external resistor
    • Dropout of 100mV at 50mA
    • Matching better than ±1% (typical)
    • Current accuracy better than ±1% (typical)
    • Maintains proper regulation regardless of how many channels are utilized
    • 10-pin MSOP package
Parametrics
Name
Value
Topology
Linear
+Vin min (V)
3
+Vin max (V)
5.5
Dimming
PWM
Package
MSOP
Product Type
Linear LED Drivers
# of White LEDs
6 @ 50mA
Operating Iq (µA)
1.7
ILED Matching
±1.0%
Θja (C/W)
130.5
Vdropout @ 20mA
100mV @ 50mA

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC4811YMM
0.024500
0.135600
10
MSOP
3x3x1.0mm
NiPdAu
e4
MIC4811YMM-TR
0.024500
0.431180
10
MSOP
3x3x1.0mm
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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