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MIC3203

HBLED Driver Controller with High-Side Current Sense

Status: In Production

Features:

  • 4.5V to 42V input voltage range
  • High efficiency (>90%)
  • ±5% LED current accuracy
  • MIC3203: Dither enabled for low EMI
  • MIC3203-1: Dither disabled
  • High-side current sense
  • Dedicated dimming control input
  • Hysteretic control (no compensation required)
  • Up to 1.5MHz switching frequency
  • Adjustable constant LED current
  • Over-temperature protection
  • -40°C to +125°C junction temperature range
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Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MIC3203 is a hysteretic, step-down, constant-current, High-Brightness LED (HB LED) driver. It provides an ideal solution for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications. The MIC3203 is well suited for lighting applications requiring a wide-input voltage range. The hysteretic control gives good supply rejection and fast response during load transients and PWM dimming. The high-side current sensing and on-chip current-sense amplifier delivers LED current with ±5% accuracy. An external high-side current-sense resistor is used to set the output current. The MIC3203 offers a dedicated PWM input (DIM) which enables a wide range of pulsed dimming. A high-frequency switching operation up to 1.5MHz allows the use of smaller external components minimizing space and cost. The MIC3203 offers frequency dither feature for EMI control. The MIC3203 operates over a junction temperature from -40°C to +125°C and is available in an 8-pin SOIC package. A dither disabled version MIC3203-1 is also available in the same package as the MIC3203.

Additional Features
    • 4.5V to 42V input voltage range
    • High efficiency (>90%)
    • ±5% LED current accuracy
    • MIC3203: Dither enabled for low EMI
    • MIC3203-1: Dither disabled
    • High-side current sense
    • Dedicated dimming control input
    • Hysteretic control (no compensation required)
    • Up to 1.5MHz switching frequency
    • Adjustable constant LED current
    • Over-temperature protection
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Topology
Buck
+Vin min (V)
4.5
+Vin max (V)
42
Output Current
External FET
Dimming
PWM
Package
SOIC
Product Type
High Brightness
Type
Hysteretic
# of White LEDs
Up to 9
Operating Iq (µA)
1
Vfb (V)
2
Switching Frequency
Hyst to 1.5MHz
Switching MOSFET
External
Dithered
Yes
ILED Accuracy
±5%
Θja (C/W)
98.9

Documents

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User Guides

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC3203YM Evaluation Board
MIC3203YM Evaluation Board ( MIC3203YM-EV )

The MIC3203/MIC3203-1 is a hysteretic step-down, constant-current, High-Brightness LED (HB LED) driver. It provides an ideal solution for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications. This board enables the evaluation of the MIC3203/MIC3203-1 for 1A LED current. The board is optimized for ease of testing, with all the...

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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
MIC3203-1YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC3203-1YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC3203YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC3203YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
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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