MIC2141 Series

Micropower Boost Converter, Dynamically Adjustable

Catalog

Micropower Boost Converter, Dynamically Adjustable

Part	Supplier Device Package	Output Configuration	Mounting Type	Package / Case	Function	Voltage - Output (Max) [Max]	Current - Output	Voltage - Input (Max) [Max]	Topology	Number of Outputs	Synchronous Rectifier	Frequency - Switching	Output Type	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input (Min) [Min]
Microchip Technology MIC2141YM5-TR	SOT-23-5	Positive	Surface Mount	SC-74A SOT-753	Step-Up Step-Up/Step-Down	22 V	10 mA	14 V	Boost Flyback SEPIC	1		330 kHz	Adjustable	4.8 V	85 °C	-40 °C	2.5 V

Catalog

Micropower Boost Converter, Dynamically Adjustable

Key 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

Description

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%.