Datasheet > MCP1642BT-18I/MC

MCP1642BT-18I/MC

更新时间： 2024-11-17 00:49:15

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
页数	文件大小	规格书
32页	687K
描述
1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator

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MCP1642BT-18I/MC 数据手册

MCP1642B/D

1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up

Synchronous Boost Regulator

Features

General Description

• Up to 96% Typical Efficiency

The

MCP1642B/D

devices

are

compact,

high-efficiency, fixed-frequency, synchronous step-up

DC-DC converters. This family of devices provides an

easy-to-use power supply solution for applications

alkaline, Ultimate Lithium, NiCd, NiMH, one-cell Li-Ion

or Li-Polymer batteries.

• 1.8A Typical Peak Input Current Limit:

- I_OUT> 175 mA @ 1.2V V_IN, 3.3V V_OUT

- I_OUT> 600 mA @ 2.4V V_IN, 3.3V V_OUT

- I_OUT> 800 mA @ 3.3V V_IN, 5.0V V_OUT

- I_OUT> 1A @ V_IN> 3.6V, 5.0V V_OUT

• Low Start-Up Voltage: 0.65V, typical 3.3V V_OUT

@ 1 mA

Low-voltage technology allows the regulator to start-up

without high inrush current or output voltage overshoot

from

low voltage input. High efficiency is

• Low Operating Input Voltage: 0.35V, typical 3.3V

V_OUT@ 1 mA

accomplished by integrating the low-resistance

N-Channel Boost switch and synchronous P-Channel

switch. All compensation and protection circuitry are

integrated to minimize the number of external

components. An open-drain Power Good output is

provided to indicate when the output voltage is within

10% of regulation and facilitates the interface with an

MCU. For standby applications, MCP1642B provides a

“true output disconnect” from input to output while in

shutdown (EN = GND). An additional device option

(MCP1642D) is available and connects “input to output

bypass” while in shutdown. Both options consume less

than 1 µA of input current.

• Output Voltage Range:

- Reference Voltage, V_FB= 1.21V

- 1.8V to 5.5V for the adjustable device option

- 1.8V, 3.0V, 3.3V and 5.0V for fixed V_OUT

options

• Maximum Input Voltage  V_OUT< 5.5V

• PWM Operation: 1 MHz

- Low Noise, Anti-Ringing Control

• Power Good Open-Drain Output

• Internal Synchronous Rectifier

• Internal Compensation

For the adjustable (ADJ) device options, the output

voltage is set by a small external resistor divider. Fixed

V_OUTdevice options do not require external divider

resistors. Two package options, 8-lead MSOP and 8-

lead 2x3 DFN, are available.

• Inrush Current Limiting and Internal Soft-Start

• Selectable, Logic-Controlled Shutdown States:

- True Load Disconnect Option (MCP1642B)

- Input-to-Output Bypass Option (MCP1642D)

• Shutdown Current (All States): 1 µA

• Overtemperature Protection

Package Types

MCP1642B/D-xx

MSOP

2x3 DFN*

• Available Packages:

- 8-Lead MSOP

V_IN

- 8-Lead 2x3 DFN

S_GND

P_GND

Applications

• One, Two and Three-Cell Alkaline, Lithium

Ultimate and NiMH/NiCd Portable Products

P_GND

V_OUT

• Single-Cell Li-Ion to 5V Converters

• PIC^®MCU Power

MCP1642B/D-ADJ

MSOP

2x3 DFN*

• USB Emergency Backup Charger from Batteries

• Personal Medical Products

• Wireless Sensors

V_IN

V_FB

V_IN

S_GND

V_FB

S_GND

P_GND

P_GNDPG

• Hand-Held Instruments

V_OUT

• GPS Receivers

V_OUT

• +3.3V to +5.0V Distributed Power Supply

* Includes Exposed Thermal Pad (EP); see Table 3-1.

DS20005253A-page 1

 2014 Microchip Technology Inc.

12 3 4 5 6 7...32

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MCP1642BT-18I/MC 替代型号

型号	品牌	替代类型	描述	数据表
MCP1642B-18I/MC	MICROCHIP	类似代替	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator

与MCP1642BT-18I/MC相关器件

型号	品牌	获取价格	描述	数据表
MCP1642BT-18I/MS	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator
MCP1642BT-ADJI/MC	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator
MCP1642BT-ADJI/MS	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator
MCP1642D	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator
MCP1642D-18I/MC	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator
MCP1642D-18I/MS	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator
MCP1642D-50I/MS	MICROCHIP	获取价格	SWITCHING REGULATOR
MCP1642D-ADJI/MC	MICROCHIP	获取价格	SWITCHING REGULATOR
MCP1642D-ADJI/MS	MICROCHIP	获取价格	SWITCHING REGULATOR
MCP1642DT-18I/MC	MICROCHIP	获取价格	1.8A Input Current Switch, 1 MHz Low-Voltage Start-Up Synchronous Boost Regulator

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