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MIC2298

3.5A Minimum, 1MHz Boost, High Brightness White LED Driver

Status: In Production

Features:

  • 3.5A minimum switch current delivers at least 7W of output power over temperature
  • 200mV ±10% feedback voltage
  • 2.5V to 10V input voltage
  • Output voltage up to 30V (max)
  • Output over voltage protection (OVP)
  • 1MHz operation
  • Programmable output current
  • <1% line regulation
  • 1µA shutdown current
  • Over-temperature protection
  • Externally programmable soft-start
  • Under voltage lockout (UVLO)
  • -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 MIC2298 is a high power boost-switching regulator that is optimized for constant-current control. The MIC2298 is capable of driving up to two series 1A white LED for photoflash, flashlight and other applications. The feedback voltage is only 200mV, minimizing ballast power dissipa-tion in constant-current control applications for improved operating efficiency.

The MIC2298 has a brightness pin that allows for a programmable torch mode as well full flash with a single pin when driving high current LEDs.

The MIC2298 implements a constant frequency 1MHz PWM control scheme to make the smallest possible design.

The 2.5V to 10V input voltage range of MIC2298 allows direct operation from 1- and 2-cell Li-Ion as well as 3- to 6-cell NiCad/NiMH/Alkaline battery sources. Maximum battery life is assured with a low 1µA shutdown current.

Additional Features
    • 3.5A minimum switch current delivers at least 7W of output power over temperature
    • 200mV ±10% feedback voltage
    • 2.5V to 10V input voltage
    • Output voltage up to 30V (max)
    • Output over voltage protection (OVP)
    • 1MHz operation
    • Programmable output current
    • <1% line regulation
    • 1µA shutdown current
    • Over-temperature protection
    • Externally programmable soft-start
    • Under voltage lockout (UVLO)
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Topology
Boost
+Vin min (V)
2.5
+Vin max (V)
10
Output Current
6A BJT
Dimming
PWM / Analog
Package
VDFN
Product Type
LED Backlight
VOUT
30
llim Typ (A)
4.75
llim Max (A)
8
lq Typ
15mA
Vfb (V)
0.2
Tol Typ %
±8
Duty Cycle Max
0.9
Freq (Hz)
1.0M
OVP
Yes
VEN (V)
1.5
EN
Yes
Soft Start
Yes
UVLO Typ (V)
2.1
Ceramic Cap
Yes
Θja (C/W)
60

Documents

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User Guides

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC2298-15YML Evaluation Board
MIC2298-15YML Evaluation Board ( MIC2298-15YML-EV )

This board enables the evaluation of the MIC2298, a fully integrated 7W net output minimum High Power white LED driver. The board includes components necessary to set the LED current to 20%, 50% and 100% of the nominal LED current (1A). The external inputs also allow the LED current to be programmed either with additional resistors or voltages on the DIM or BRT pins. Also the enable pin can be...

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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
MIC2298-15YML-TR
0.023840
0.644302
12
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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