Datasheet > MCP1642B-33I/MS

MCP1642B-33I/MS

更新时间： 2024-11-16 19:18:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		开关光电二极管
页数	文件大小	规格书
32页	798K
描述
SWITCHING REGULATOR

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中文翻译

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技术参数
数据手册

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MCP1642B-33I/MS 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	TSSOP,	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	13 weeks	风险等级：	1.47
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	3 V
最小输入电压：	1.5 V	JESD-30 代码：	S-PDSO-G8
JESD-609代码：	e3	长度：	3 mm
功能数量：	1	端子数量：	8
最高工作温度：	85 °C	最低工作温度：	-40 °C
标称输出电压：	3.3 V	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	筛选级别：	TS 16949
座面最大高度：	1.1 mm	表面贴装：	YES
切换器配置：	BOOST	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn) - annealed	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
宽度：	3 mm	Base Number Matches：	1

MCP1642B-33I/MS 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

中文翻译

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