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参数资料
| 型号： | ADM00427 |
| 厂商： | Microchip Technology |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION MCP16323 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 3V |
| 电流 - 输出： | 3A |
| 输入电压： | 6 ~ 18 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 1MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MCP16323 |
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MCP16323
18V Input, 3A 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 18V
3A Output Current
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
Under Voltage 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 MCP16323 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 18V. 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 MCP16323 device can supply 3A 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
Applications
? PIC ? /dsPIC ? Microcontroller Bias Supply
supplies.
The regulator can be turned on and off with a logic level
signal applied to the EN input. The EN pin is internally
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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
MCP16323 is offered in a 3x3 QFN-16 surface mount
package.
? 2011 Microchip Technology Inc.
DS22284A-page 1
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