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MIC3205

HBLED Driver Controller w/ Fixed-Frequency Hysteretic Control

Status: In Production

Features:

  • 4.5V to 40V input voltage range
  • Fixed operating frequency over input voltage range
  • High efficiency (>90%)
  • ±5% LED current accuracy
  • 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 MIC3205 is a hysteretic, step-down, high-brightness LED (HB LED) driver with a patent pending frequency regulation scheme that maintains a constant operating frequency over input voltage range. It provides an ideal solution for interior/exterior lighting, architectural and ambient lighting, LED bulbs, and other general illumination applications.

The MIC3205 is well suited for lighting applications requiring a wide input voltage range. The hysteretic control provides good supply rejection and fast response during load transients and PWM dimming. The high-side current sensing and on-chip current-sense amplifier deliver LED current with ±5% accuracy. An external high-side current-sense resistor is used to set the output current.

The MIC3205 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 MIC3205 operates over a junction temperature from –40°C to +125°C

Additional Features
    • 4.5V to 40V input voltage range
    • Fixed operating frequency over input voltage range
    • High efficiency (>90%)
    • ±5% LED current accuracy
    • 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)
40
Output Current
External FET
Dimming
PWM
Package
VDFN
Product Type
High Brightness
Type
Hysteretic
# of White LEDs
Up to 9
Operating Iq (µA)
1.3
Vfb (V)
2
Switching Frequency
Hyst to 1MHz
Switching MOSFET
External
ILED Accuracy
±5%
Θja (C/W)
60.7

Documents

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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
MIC3205YML-T5
0.022700
0.643702
10
VDFN
3x3x0.9mm
NiPdAu
e4
MIC3205YML-TR
0.022700
0.643702
10
VDFN
3x3x0.9mm
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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