MCP16331 datasheet(1/48 Pages) MICROCHIP

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 2014-2021 Microchip Technology Inc.

DS20005308D-page 1

MCP16331

Features

• Up to 96% Efficiency

• Input Voltage Range: 4.4V to 50V

• Output Voltage Range: 2.0V to 24V

• 2% Output Voltage Accuracy

• Passes Automotive AEC-Q100 Reliability Testing

• Integrated N-Channel Buck Switch: 600 m



• Minimum 500 mA Output Current Over All Input

Voltage Ranges (see Figure 2-9 for Maximum

Output Current vs. VIN)

- Up to 1.2A output current at 3.3V and



5V VOUT, VIN > 12V, SOT-23 package at

+25°C ambient temperature

- Up to 0.8A output current at 12V VOUT,

VIN > 18V, SOT-23 package at 

+25°C ambient temperature

•500 kHz Fixed Frequency

• Adjustable Output Voltage

• Low Device Shutdown Current

• Peak Current Mode Control

• Internal Soft Start

• Internal Compensation

• Internal Pull-up on the Enable pin

• Stable with Ceramic Capacitors

• Cycle-by-Cycle Peak Current Limit

• Undervoltage Lockout (UVLO): 4.1V to Start;



3.6V to Stop

• Overtemperature Protection

• Available Packages: 6-Lead SOT-23,



8-Lead 2 mm x 3 mm TDFN

Applications

•PIC® Microcontroller and dsPIC® Digital Signal

Controller Bias Supply

• 48V, 24V and 12V Industrial Input DC-DC

Conversion

• Set-Top Boxes

• DSL Cable Modems

• Automotive

• AC/DC Adapters

• SLA Battery-Powered Devices

• AC-DC Digital Control Power Source

• Power Meters

•Consumer

• Medical and Health Care

• Distributed Power Supplies

General Description

The MCP16331 device is a highly integrated,

high-efficiency, fixed-frequency, step-down DC-DC

converter in a popular 6-pin SOT-23 or 8-pin

2 mm x 3 mm TDFN package, that operates from input

voltage sources up to 50V. Integrated features include a

high-side switch, fixed frequency Peak Current-Mode

control, internal compensation, peak current limit and

overtemperature protection. Only a few external

components are necessary to develop a complete

step-down DC-DC converter power supply.

High converter efficiency is achieved by integrating the

current-limited, low-resistance, high-speed N-Channel

MOSFET and its associated driving circuitry. High

switching frequency minimizes the size of external

filtering components, resulting in a small solution size.

The MCP16331 can supply 500 mA of continuous

current while regulating the output voltage from 2.0V to

24V. An integrated, high-performance Peak Cur-

rent-Mode architecture keeps the output voltage tightly

regulated, even during input voltage steps and output

current transient conditions that are common in power

systems.

The EN input is used to turn the device on and off.

While off, only a few µA of current are consumed from

the input for power shedding and load distribution

applications. This pin is internally pulled up, so the

device will start, even if the EN pin is left floating.

Output voltage is set with an external resistor divider.

The MCP16331 is offered in a space-saving 6-lead

SOT-23 and 8-lead 2 mm x 3 mm TDFN surface mount

package.

Package Type

MCP16331

6-Lead SOT-23

MCP16331

8-Lead 2 mm x3 mm

TDFN*

VFB

GND

EN

1

2

3

6

4

SW

BOOST

5 VIN

NC

EN

NC

1

2

3

4

8

7

6

5

SW

EP

9

VIN

BOOST

VFB

GND

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

High-Voltage Input Integrated Switch Step-Down Regulator

Số phần tương tự - MCP16331

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Microchip Technology	MCP16331	993Kb / 40P	High-Voltage Input Integrated Switch Step-Down Regulator 03/25/14
	MCP16331-E/CH	993Kb / 40P	High-Voltage Input Integrated Switch Step-Down Regulator 03/25/14
	MCP16331-E/MNY	993Kb / 40P	High-Voltage Input Integrated Switch Step-Down Regulator 03/25/14
	MCP16331T-E/CH	993Kb / 40P	High-Voltage Input Integrated Switch Step-Down Regulator 03/25/14
	MCP16331T-E/MNY	993Kb / 40P	High-Voltage Input Integrated Switch Step-Down Regulator 03/25/14

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