MIC2145 Series

400kHz 0.9A Isw Boost Regulator

Catalog

400kHz 0.9A Isw Boost Regulator

Part	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Number of Outputs	Voltage - Output (Max)	Supplier Device Package	Frequency - Switching	Topology	Function	Mounting Type	Output Configuration	Package / Case	Voltage - Input (Max) [Max]	Output Type	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output	Package / Case [custom]	Package / Case
Microchip Technology MIC2145YML-TR	2.4 V	2.4 V	1	16 V	10-MLF® (3x3)	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	10-MLF® 10-VFDFN Exposed Pad	16 V	Adjustable	85 °C	-40 °C	500 mA
Microchip Technology MIC2145BML-TR	2.4 V	2.4 V	1	16 V	10-MLF® (3x3)	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	10-MLF® 10-VFDFN Exposed Pad	16 V	Adjustable	85 °C	-40 °C	500 mA
Microchip Technology MIC2145YML TR	2.4 V	2.4 V	1	16 V	10-MLF® (3x3)	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	10-MLF® 10-VFDFN Exposed Pad	16 V	Adjustable	85 °C	-40 °C	500 mA
Microchip Technology MIC2145BMM-TR	2.4 V	2.4 V	1	16 V	8-MSOP	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	8-MSOP 8-TSSOP	16 V	Adjustable	85 °C	-40 °C	500 mA	0.118 in	3 mm
Microchip Technology MIC2145BMM	2.4 V	2.4 V	1	16 V	8-MSOP	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	8-MSOP 8-TSSOP	16 V	Adjustable	85 °C	-40 °C	500 mA	0.118 in	3 mm
Microchip Technology MIC2145YMM	2.4 V	2.4 V	1	16 V	8-MSOP	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	8-MSOP 8-TSSOP	16 V	Adjustable	85 °C	-40 °C	500 mA	0.118 in	3 mm
Microchip Technology MIC2145BMMTR	2.4 V	2.4 V	1	16 V	8-MSOP	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	8-MSOP 8-TSSOP	16 V	Adjustable	85 °C	-40 °C	500 mA	0.118 in	3 mm
Microchip Technology MIC2145YMM-TR	2.4 V	2.4 V	1	16 V	8-MSOP	450 kHz	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	Surface Mount	Positive	8-MSOP 8-TSSOP	16 V	Adjustable	85 °C	-40 °C	500 mA	0.118 in	3 mm

Catalog

400kHz 0.9A Isw Boost Regulator

Key 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

Description

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.