Specification	MCP1603BT-ADJI/OS

Current - Output	500 mA
Frequency - Switching	2 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	SOT-23-5 Thin, TSOT-23-5
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.7 V
Voltage - Output (Max) [Max]	4.5 V
Voltage - Output (Min/Fixed)	0.8 V

MCP1603L Series

2MHz 500mA Synchronous PFM/PWM Buck Regulator

Part	Operating Temperature [Max]	Operating Temperature [Min]	Function	Current - Output	Output Configuration	Voltage - Input (Max) [Max]	Package / Case	Voltage - Input (Min) [Min]	Supplier Device Package	Topology	Voltage - Output (Min/Fixed)	Voltage - Output (Max) [Max]	Output Type	Mounting Type	Frequency - Switching	Number of Outputs	Output Type	Supplied Contents	Utilized IC / Part	Regulator Topology	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]	Main Purpose	Voltage - Output	Board Type
Microchip Technology MCP1603T-ADJI/MC	85 °C	-40 °C	Step-Down	500 mA	Positive	5.5 V	8-VFDFN Exposed Pad	2.7 V	8-DFN (2x3)	Buck	0.8 V	4.5 V	Adjustable	Surface Mount	2 MHz	1
Microchip Technology MCP1603T-150I/OS	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	SOT-23-5 Thin TSOT-23-5	2.7 V		Buck	1.5 V			Surface Mount	2 MHz	1	1.81 mOhm
Microchip Technology MCP1603T-250I/MC	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	8-VFDFN Exposed Pad	2.7 V	8-DFN (2x3)	Buck	2.5 V			Surface Mount	2 MHz	1	1.81 mOhm
Microchip Technology MCP1603BT-ADJI/OS	85 °C	-40 °C	Step-Down	500 mA	Positive	5.5 V	SOT-23-5 Thin TSOT-23-5	2.7 V		Buck	0.8 V	4.5 V	Adjustable	Surface Mount	2 MHz	1
Microchip Technology MCP1603LT-ADJI/OS	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	SOT-23-5 Thin TSOT-23-5	2.7 V		Buck	0.8 V	4.5 V	Adjustable	Surface Mount	2 MHz	1
Microchip Technology MCP1603LT-180I/OS	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	SOT-23-5 Thin TSOT-23-5	2.7 V		Buck	1.8 V			Surface Mount	2 MHz	1	1.81 mOhm
Microchip Technology MCP1603T-120I/MC	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	8-VFDFN Exposed Pad	2.7 V	8-DFN (2x3)	Buck	1.2 V			Surface Mount	2 MHz	1	1.81 mOhm
Microchip Technology MCP1603T-180I/OS	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	SOT-23-5 Thin TSOT-23-5	2.7 V		Buck	1.8 V			Surface Mount	2 MHz	1	1.81 mOhm
Microchip Technology MCP1603T-330I/MC	125 ¯C	-40 °C	Step-Down	500 mA	Positive	5.5 V	8-VFDFN Exposed Pad	2.7 V	8-DFN (2x3)	Buck	3.3 V			Surface Mount	2 MHz	1	1.81 mOhm
Microchip Technology MCP1603RD-TNY				500 mA											2 MHz			Board(s)	MCP1603	Buck	Non-Isolated	1	2.7 V	5.5 V	DC/DC Step Down	0.8 V 1.2 V 1.8 V 2.5 V 3.3 V	Fully Populated

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 1.34
		25	$ 1.11
		100	$ 1.01
	Digi-Reel®	1	$ 1.34
		25	$ 1.11
		100	$ 1.01
	Tape & Reel (TR)	3000	$ 1.01
Microchip Direct	T/R	1	$ 1.34
		25	$ 1.11
		100	$ 1.01
		1000	$ 0.98
		5000	$ 0.97

Description

General part information

MCP1603L Series

The MCP1603 is a high efficiency fully integrated 500 mA 2.0 MHz synchronous buck regulator ideally suited for Li-Ion/NiMH Battery powered application powered.

At heavy loads, the MCP1603 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-size solution. When the load is reduced to light levels, the MCP1603 automatically changes operation to a PFM mode to minimize quiescent current draw from the battery. No intervention is necessary for a smooth transition from one mode to another. These two modes of operation allow the MCP1603 to achieve the highest efficiency over the entire operating current range.

Documents

Technical documentation and resources

Datasheet

MCP1603BT-ADJI/OS

Deep-Dive with AI

MCP1603BT-ADJI/OS

Deep-Dive with AI

Technical Specifications

MCP1603L Series

Pricing

Description

MCP1603L Series

Documents

Datasheet

Analog and Interface Product Selector Guide

Automotive Recommended Product Selector Guide

Analog Solutions for Automotive Applications Design Guide

Low Power Analog Solutions

MCP1603 Tiny Reference Design (User's Guide)

MCP1603L Series