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MIC2870

1.5A Synchronous Boost Flash LED Driver

Status: In Production

Features:

  • Up to 1.5A flash LED driving current with a 2.7V to 5.0V input voltage range
  • High-efficiency 2MHz VFadaptive boost driver
  • Configurable 1 or 2 channel(s) WLED driver
  • LED driving current soft-start
  • Control through I2C interface or external pins
  • Flash inhibit function for GSM pulse synchronization
  • True load disconnect
  • Flash time-out protection
  • 1µA shutdown current
  • Available in 16-pin 2mm × 2mm TQFN package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2870 is a high-current, high-efficiency flash LED driver for one or two high-brightness camera flash LEDs.

The LED driver current is generated by an integrated inductive boost converter with 2MHz switching frequency which allows the use of a very-small inductor and output capacitor. These features make the MIC2870 an ideal solution for high-resolution camera phone LED flashlight driver applications.

MIC2870 supports two 750mA white-LEDs (WLEDs) or a single 1.5A WLED configuration. When two WLEDs are connected, their currents are matched automatically.

MIC2870 operates in either flash or torch modes that can be controlled through either an I2C interface or external pins. The brightness in the flash and torch mode can be adjusted via two external resistors individually. High-speed mode I2C interface provides a simple control at a clock speed up to 3.4MHz to support most camera functions such as auto-focus, white balance, and image capture (flash mode).

The MIC2870 is available in 16-pin, 2mm × 2mm TQFN package with a junction temperature range of −40°C to +125°C.

Additional Features
    • Up to 1.5A flash LED driving current with a 2.7V to 5.0V input voltage range
    • High-efficiency 2MHz VFadaptive boost driver
    • Configurable 1 or 2 channel(s) WLED driver
    • LED driving current soft-start
    • Control through I2C interface or external pins
    • Flash inhibit function for GSM pulse synchronization
    • True load disconnect
    • Flash time-out protection
    • 1µA shutdown current
    • Available in 16-pin 2mm × 2mm TQFN package
Parametrics
Name
Value
Product Type
Camera Flash LED Drivers
VIN Min (V)
2.7
VIN Max (V)
5
# of LED Channels
2
Max LED Current (mA)
1500
Standby Current (mA)
0.9
Switching Frequency
2
Θja (C/W)
80
Peak Efficiency
94
Current Accuracy
±10%
Interface
I2C

Documents

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Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC2870YFT Evaluation Board
MIC2870YFT Evaluation Board ( MIC2870YFT-EV )

The MIC2870 is a high-current, high-efficiency flash LED driver for one or two high-brightness camera flash LEDs. The LED driver current is generated by an integrated inductive boost converter with 2MHz switching frequency which allows the use of very small inductor and output capacitor. These features make the MIC2870 an ideal solution for high-resolution camera phone LED flash light driver...

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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
MIC2870YFT-T5
0.713654
16
UQFN
2x2x0.6mm
Matte Tin
e3
MIC2870YFT-TR
0.713654
16
UQFN
2x2x0.6mm
Matte Tin
e3
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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