MCP1642 Series

1 MHz 1.8A Isw Synchronous PWM Boost Regulator

Catalog

1 MHz 1.8A Isw Synchronous PWM Boost Regulator

Part	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Function	Voltage - Output (Max) [Max]	Number of Outputs	Supplier Device Package	Output Type	Current - Output	Output Configuration	Mounting Type	Frequency - Switching	Package / Case	Topology	Voltage - Input (Min) [Min]	Output Type	Package / Case [custom]	Package / Case
Microchip Technology MCP1642DT-ADJI/MC	5.5 V	1.8 V	85 °C	-40 °C	Step-Up	5.5 V	1	8-DFN (2x3)	Adjustable	800 mA	Positive	Surface Mount	1 MHz	8-VFDFN Exposed Pad	Boost	0.65 V
Microchip Technology MCP1642B-18I/MC	5.5 V	1.8 V	85 °C	-40 °C	Step-Up		1	8-DFN (2x3)		800 mA	Positive	Surface Mount	1 MHz	8-VFDFN Exposed Pad	Boost	0.65 V	1.81 mOhm
Microchip Technology MCP1642B-ADJI/MS	5.5 V	1.8 V	85 °C	-40 °C	Step-Up	5.5 V	1	8-MSOP	Adjustable	800 mA	Positive	Surface Mount	1 MHz	8-MSOP 8-TSSOP	Boost	0.65 V		0.118 in	3 mm
Microchip Technology MCP1642D-33I/MS	5.5 V	3.3 V	85 °C	-40 °C	Step-Up		1	8-MSOP		800 mA	Positive	Surface Mount	1 MHz	8-MSOP 8-TSSOP	Boost	0.65 V	1.81 mOhm	0.118 in	3 mm
Microchip Technology MCP1642B-18I/MS	5.5 V	1.8 V	85 °C	-40 °C	Step-Up		1	8-MSOP		800 mA	Positive	Surface Mount	1 MHz	8-MSOP 8-TSSOP	Boost	0.65 V	1.81 mOhm	0.118 in	3 mm
Microchip Technology MCP1642D-18I/MS	5.5 V	1.8 V	85 °C	-40 °C	Step-Up		1	8-MSOP	Adjustable	800 mA	Positive	Surface Mount	1 MHz	8-MSOP 8-TSSOP	Boost	0.65 V		0.118 in	3 mm
Microchip Technology MCP1642B-30I/MC	5.5 V		85 °C	-40 °C	Step-Up		1	8-DFN (2x3)		800 mA	Positive	Surface Mount	1 MHz	8-VFDFN Exposed Pad	Boost	0.65 V	1.81 mOhm
Microchip Technology MCP1642D-50I/MC	5.5 V	5 V	85 °C	-40 °C	Step-Up		1	8-DFN (2x3)		800 mA	Positive	Surface Mount	1 MHz	8-VFDFN Exposed Pad	Boost	0.65 V	1.81 mOhm
Microchip Technology MCP1642BT-50I/MS	5.5 V	5 V	85 °C	-40 °C	Step-Up		1	8-MSOP		800 mA	Positive	Surface Mount	1 MHz	8-MSOP 8-TSSOP	Boost	0.65 V	1.81 mOhm	0.118 in	3 mm
Microchip Technology MCP1642DT-50I/MS	5.5 V	5 V	85 °C	-40 °C	Step-Up		1	8-MSOP		800 mA	Positive	Surface Mount	1 MHz	8-MSOP 8-TSSOP	Boost	0.65 V	1.81 mOhm	0.118 in	3 mm

Catalog

1 MHz 1.8A Isw Synchronous PWM Boost Regulator

Key Features

• * Up to 96% Typical Efficiency

• * IOUT > 175 mA @ 1.2V VIN, 3.3V VOUT

• * IOUT > 600 mA @ 2.4V VIN, 3.3V VOUT

• * IOUT > 800 mA @ 3.3V VIN, 5.0V VOUT

• * IOUT > 1A @ VIN > 3.6V, 5.0V VOUT

• * Low Start-up Voltage: 0.65V

• * Minimum Operating Input Voltage: 0.35V

• * Maximum Input Voltage < VOUT < 5.5V

• * Adjustable Output Voltage Range: 1.8V to 5.5V

• * PWM Operation at 1 MHz

• * Shutdown Current (All States): < 1 µA

• * Internal Synchronous Rectifier

• * Internal Compensation

• * Inrush Current Limiting and Internal Soft-Start

• * True Load Disconnect Shutdown (MCP1642B)

• * Input-to-Output Bypass Option (MCP1642D)

• * Low Noise, Anti-Ringing Control

• * Over-temperature Protection

• * MSOP-8 or 2x3 8-Lead DFN packages

Description

The MCP1642B/D is a compact, high-efficiency, fixed frequency, synchronous step-up DC-DC converter. It provides an easy-to-use power supply solution for applications powered by either one-cell, two-cell, or three-cell alkaline, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries. With the 1.8A Typical Peak Input Current Limit, MCP1642B/D can provide over 1A output current in 5V applications with input over 3.6V