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MIC2145

400kHz 0.9A Isw Boost Regulator

Status: In Production

Features:

  • 2.4V to 16V input voltage
  • Output adjustable to 16V
  • Programmable peak current limit
  • Soft start
  • Up to 450kHz switching frequency
  • 0.5µA shutdown current
  • 200µA quiescent current
  • Capable of 5V/500mA output with 3.3V input
  • Achieves over 85% efficiency
  • Implements low power boost, SEPIC, and flyback topologies
  • MSOP-8 package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2145 is a small size boost switching regulator that can provide over 2.5W of output power. The input voltage range is between 2.4V to 16V, making the device suitable for one-cell Li-Ion and 3- to 4-cell alkaline/NiCad/NiMH applications. The output voltage of the MIC2145 can be adjusted up to 16V.

The MIC2145 is well suited for portable, space-sensitive applications. Its typical 450kHz operation allows small surface mount external components to be used. The MIC2145 has a low quiescent current of 200µA, and a typical shutdown current of 0.5µA. The MIC2145 is capable of high efficiencies in a small board area.

The MIC2145 features a low-on resistance internal switch that allows it to provide over 2.5W of output power. The peak switch current can be programmed through an external resistor. This allows the user to set the peak switch current at the level where maximum efficiency occurs. It also allows the user to further optimize for efficiency and inductor size by setting the peak current below the level of inductor saturation.

The MIC2145 is available in an MSOP-8 package with an ambient operating temperature range from -40°C to +85°C.

Additional Features
    • 2.4V to 16V input voltage
    • Output adjustable to 16V
    • Programmable peak current limit
    • Soft start
    • Up to 450kHz switching frequency
    • 0.5µA shutdown current
    • 200µA quiescent current
    • Capable of 5V/500mA output with 3.3V input
    • Achieves over 85% efficiency
    • Implements low power boost, SEPIC, and flyback topologies
    • MSOP-8 package
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
2.4
Input Voltage Range Max (V)
16
Output Voltage Range Min (V)
2.4
Output Voltage Range Max (V)
16
Output Current (mA) max
2000
Quiescent Current (mA) typ
0.2
Switching Frequency (kHz)
450
Operating Temp Range
-40 to 85
Vfb (V)
1.08
SHUTDOWN Current (µA) (Typ)
0.5
Switch current (A) typ
0.9
Alternative Topology
SEPIC, Flyback

Documents

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2145YMM-TR
0.025100
0.334700
8
MSOP
3x3mm
NiPdAu
e4
MIC2145YMM
0.025100
0.124600
8
MSOP
3x3mm
NiPdAu
e4
MIC2145YML-TR
0.022700
0.643702
10
VDFN
3x3x0.9mm
NiPdAu
e4
MIC2145YML
0.022700
0.048000
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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