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MIC2141

Micropower Boost Converter, Dynamically Adjustable

Status: In Production

Features:

  • Implements low-power boost, SEPIC, or flyback
  • 2.2V to 14V input voltage
  • 330kHz switching frequency
  • <2µA shutdown current
  • 70µA quiescent current
  • 1.24V bandgap reference
  • typical output current 1mA to 10mA
  • SOT-23-5 package
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2141 is a micropower boost switching regulator that can operate from 3- or 4-cell nickel-metal-hydride batteries or a single Li-Ion cell. This regulator employs a constant 330kHz, fixed 18% duty-cycle, gated-oscillator architecture.

The MIC2141 can be used in applications where the output voltage must be dynamically adjusted. The device features a control signal input which is used to proportionally adjust the output voltage. The control signal input has a gain of 6, allowing a 0.8V to 3.6V control signal to vary a 4.8V to 22V output.

The MIC2141 requires only three external components to operate and is available in a tiny 5-lead SOT-23 package for space and power-sensitive portable applications. The MIC2141 draws only 70µA of quiescent current and can operate with an efficiency exceeding 85%.

Additional Features
    • Implements low-power boost, SEPIC, or flyback
    • 2.2V to 14V input voltage
    • 330kHz switching frequency
    • <2µA shutdown current
    • 70µA quiescent current
    • 1.24V bandgap reference
    • typical output current 1mA to 10mA
    • SOT-23-5 package
Parametrics
Name
Value
Regulator Type
Step Up (Boost)
Input Voltage Range Min (V)
2.5
Input Voltage Range Max (V)
14
Output Voltage Range Min (V)
2.8
Output Voltage Range Max (V)
22
Output Current (mA) max
1000
Quiescent Current (mA) typ
0.07
Switching Frequency (kHz)
330
Operating Temp Range
-40 to 85
Vfb (V)
1.24
SHUTDOWN Current (µA) (Typ)
2
Switch current (A) typ
1
Alternative Topology
SEPIC, Flyback

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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
MIC2141YM5-TR
0.017400
0.049000
5
SOT-23
-
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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