MCP1640-I/MC Microchip Technology, MCP1640-I/MC Datasheet - Page 9

• Manufacturer Part Number: MCP1640-I/MC
• Description: IC CONV DC-DC STEPUP SYNC 8DFN
• Manufacturer: Microchip Technology
• Type: Step-Up (Boost)r

Specifications of MCP1640-I/MC

• Package / Case: 8-DFN
• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 2 ~ 5.5 V
• Current - Output: 100mA
• Frequency - Switching: 500kHz
• Voltage - Input: 0.8 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Mounting Style: SMD/SMT
• Duty Cycle (max): 90 %
• Efficiency: 96 %
• Input / Supply Voltage (max): 0.8 V
• Input / Supply Voltage (min): 0.65 V
• Load Regulation: 0.01 %
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Output Current: 350 mA
• Output Voltage: 5 V
• Switching Frequency: 500 KHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

1.1
1.2
© 2010 Microchip Technology Inc.
INTRODUCTION
MCP1640 SHORT OVERVIEW
This chapter provides an overview of the MCP1640 Single Quadruple-A Battery Boost
Converter Reference Design and covers the following topics:
• MCP1640 Short Overview
• What Is the MCP1640 Single Quadruple-A Battery Boost Converter Reference
• MCP1640 Single Quadruple-A Battery Boost Converter Reference Design kit
The MCP1640 device is a compact, high-efficiency, fixed frequency, step-up DC-DC
converter. It provides an easy-to-use power supply solution, with a minimum number of
external components for applications powered by one-cell, two-cell, or three-cell
alkaline, NiCd, NiMH, one-cell Li-Ion or Li-Polymer batteries.
The MCP1640 device automatically selects the best operating mode for efficiency,
PWM (Pulse-Width Modulation) or PFM (Pulse Frequency Modulation). It has a low
quiescent current (19 µA typically), a wide input voltage range (0.35 to 5.5V) and a low
start-up voltage (0.65V at 1 mA load current). The MCP1640 device consumes less
than 1 µA in Shutdown mode.
Microchip Technology Inc. provides the MCP1640 device in four variants, which help
engineers to meet different system requirements. The devices and their available
options are presented in Table 1-1.
TABLE 1-1:
The MCP1640 is available in a SOT23-6 and 8-LD DFN (2x3 mm) packages. For
additional information on the MCP1640 device, refer to the MCP1640/B/C/D Data
Sheet.
MCP1640
MCP1640B
MCP1640C
MCP1640D
Design?
contents
Part Number
Chapter 1. Product Overview
PART NUMBER SELECTION
MCP1640 SINGLE QUADRUPLE-A
BATTERY BOOST CONVERTER
PWM/PFM
Mode
—
—
X
X
Mode
PWM
REFERENCE DESIGN
—
—
X
X
True Output
Disconnect
Shutdown
Option
—
—
X
X
Input to Output
DS51922A-page 9
Shutdown
Bypass
Option
—
—
X
X