MIC2570 Series

Two Cell Boost Regulator

Catalog

Two Cell Boost Regulator

Part	Voltage - Input (Min) [Min]	Supplier Device Package	Output Configuration	Current - Output	Voltage - Input (Max) [Max]	Mounting Type	Frequency - Switching	Output Type	Topology	Number of Outputs	Package / Case	Package / Case [y]	Package / Case [x]	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Function	Voltage - Output (Max) [Max]
Microchip Technology MIC2570-1YM	1.3 V	8-SOIC	Positive	1 A	15 V	Surface Mount	20 kHz	Programmable	Boost SEPIC	1	8-SOIC	3.9 mm	0.154 in	2.85 V 3.3 V 5 V	85 °C	-40 °C	Step-Up Step-Up/Step-Down
Microchip Technology MIC2570-2YM	1.3 V	8-SOIC	Positive	1 A	15 V	Surface Mount	20 kHz	Adjustable	Boost SEPIC	1	8-SOIC	3.9 mm	0.154 in	1.3 V	85 °C	-40 °C	Step-Up Step-Up/Step-Down	36 V
Microchip Technology MIC2570-2BM-TR	1.3 V	8-SOIC	Positive	1 A	15 V	Surface Mount	20 kHz	Adjustable	Boost SEPIC	1	8-SOIC	3.9 mm	0.154 in	1.3 V	85 °C	-40 °C	Step-Up Step-Up/Step-Down	36 V
Microchip Technology MIC2570-1BM-TR	1.3 V	8-SOIC	Positive	1 A	15 V	Surface Mount	20 kHz	Programmable	Boost SEPIC	1	8-SOIC	3.9 mm	0.154 in	2.85 V 3.3 V 5 V	85 °C	-40 °C	Step-Up Step-Up/Step-Down
Microchip Technology MIC2570-2BM	1.3 V	8-SOIC	Positive	1 A	15 V	Surface Mount	20 kHz	Adjustable	Boost SEPIC	1	8-SOIC	3.9 mm	0.154 in	1.3 V	85 °C	-40 °C	Step-Up Step-Up/Step-Down	36 V

Catalog

Two Cell Boost Regulator

Key Features

• + Operates from a two-cell supply

• + 1.3V to 15V operation

• + 130µA typical quiescent current

• + Complete regulator fits 0.6 in² area

• + 2.85V/3.3V/5V selectable output voltage (MIC2570-1)

• + Adjustable output up to 36V (MIC2570-2)

• + 1A current limited pass element

• + Frequency synchronization input

• + 8-lead SOIC package

Description

MIC2570 is a micropower boost switching regulator that operates from two alkaline, two nickel-metal-hydride cells, or one lithium cell. The MIC2570 accepts a positive input voltage between 1.3V and 15V. Its typical no-load supply current is 130µA. The MIC2570 is available in selectable fixed output or adjustable output versions. The MIC2570-1 can be configured for 2.85V, 3.3V, or 5V by connecting one of three separate feedback pins to the output. The MIC2570-2 can be configured for an output voltage ranging between its input voltage and 36V, using an external resistor network. The MIC2570 has a fixed switching frequency of 20kHz. An external SYNC connection allows the switching frequency to be synchronized to an external signal. The MIC2570 requires only four components (diode, inductor, input capacitor and output capacitor) to implement a boost regulator. A complete regulator can be constructed in a 0.6 in² area. All versions are available in an 8-lead SOIC with an operating range from -40°C to +85°C.