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| 型号： | MCP16321T-250E/NG |
| 厂商： | Microchip Technology |
| 文件页数： | 1/34页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 2.5V 1A 16-VQFN |
| 标准包装： | 3,300 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 2.5V |
| 输入电压： | 6 V ~ 24 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QFN（3x3） |
| 其它名称： | MCP16321T-250E/NGTR |
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MCP16321/2
24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator
with Power Good Indication
Features
Description
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Up to 95% Typical Efficiency
Input Voltage Range: 6.0V to 24V
1A Output Current (MCP16321)
2A Output Current (MCP16322)
Fixed Output Voltages: 0.9V, 1.5V, 1.8V, 2.5V,
3.3V, 5V with 2% Output Voltage Accuracy
Adjustable Version Output Voltage Range:
0.9V to 5V with 1.5% Reference Voltage Accuracy
Integrated N-Channel High-Side Switch: 180 m ?
Integrated N-Channel Low-Side Switch: 120 m ?
1 MHz Fixed Frequency
Low Device Shutdown Current
Peak Current Mode Control
Internal Compensation
Stable with Ceramic Capacitors
Internal Soft-Start
Cycle-by-Cycle Peak Current Limit
Undervoltage Lockout (UVLO): 5.75V
Overtemperature Protection
V OUT Overvoltage Protection
V OUT Voltage Supervisor Reported at the PG Pin
Available Package: QFN-16 (3x3 mm)
The MCP16321/2 is a highly integrated, high-efficiency,
fixed frequency, synchronous step-down DC-DC
converter in a 16-pin QFN package that operates from
input voltages up to 24V. Integrated features include a
high-side and low-side N-Channel switch, fixed
frequency Peak Current Mode Control, internal
compensation, peak current limit, V OUT overvoltage
protection and overtemperature protection. Minimal
external components are necessary to develop a
complete synchronous step-down DC-DC converter
power supply.
High converter efficiency is achieved by integrating a
high-speed, current limited, low resistance, high-side
N-Channel MOSFET, as well as a high-speed, low
resistance, low-side N-Channel MOSFET and
associated drive circuitry. High switching frequency
minimizes the size of the inductor and output capacitor,
resulting in a small solution size.
The MCP16321/2 device can supply 1A/2A of
continuous current while regulating the output voltage
from 0.9V to 5V. A high-performance peak current
mode architecture keeps the output voltage tightly
regulated, even during input voltage steps and output
current transient conditions that are common in power
supplies.
Applications
The regulator can be turned on and off with a logic level
signal applied to the EN input. The EN input is internally
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PIC ? /dsPIC ? Microcontroller Bias Supply
12V Industrial Input DC-DC Conversion
Set-Top Boxes
DSL Cable Modems
Automotive
Wall Cube Regulation
SLA Battery Powered Devices
AC-DC Digital Control Power Source
Power Meters
Consumer
Medical and Health Care
Distributed Power Supplies
pulled up to a 4.2V reference and is rated for a
maximum of 6V. With EN low, typically 5 μA of current
is consumed from the input, making the part ideal for
power shedding and load distribution applications. The
PG output is an open drain output pin used to interface
with other components of the system, and can be
pulled up to a maximum of 6V.
The output voltage can either be fixed at output
voltages of 0.9V, 1.5V, 1.8V, 2.5V, 3.3V, 5V or
adjustable using an external resistor divider. The
MCP16321/2 is offered in a 3x3 QFN-16 surface mount
package.
? 2011 Microchip Technology Inc.
DS22285A-page 1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP16321T-250NG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication |
| MCP16321T-330E | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication |
| MCP16321T-330E/MG | 制造商:Microchip Technology Inc 功能描述:1A SYNCHROUNS BUCK SWITCHER, 24VIN - Tape and Reel |
| MCP16321T-330E/NG | 功能描述:开关变换器、稳压器与控制器 1A Synchrouns Buck Switcher 24Vin RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MCP16321T-330NG | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:24V Input, 1A/2A Output, High Efficiency Synchronous Buck Regulator with Power Good Indication |
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