Microchip MCP16362 Manual

Microchip Ikke kategoriseret MCP16362

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 2020-2021 Microchip Technology Inc. DS20006481B-page 1

MCP16361/2/3

Features

• Input Voltage Range: 4.0V to 48V

• Adjustable Output Voltage Range: 2.0V to 24V

• Integrated N-Channel Buck Switch: 100 mΩ

• 3A Output Current

• 2.2 MHz Fixed Frequency

• Shutdown Current: 5 µA typical

• Quiescent Current: 18 µA typical (not switching)

• Device Selectable Switching Mode

- Automatic Pulse Frequency Modulation/

Pulse Width Modulation (PFM/PWM)

Operation - MCP16361

- PWM only Mode of Operation - MCP16362

- PWM only Mode of Operation with Switching

Frequency Dithering for EMI constrained

applications - MCP16363

• Power Good Output

• Undervoltage Lockout (UVLO)

• Peak Current Mode Control

• Internal Compensation

• Internal Soft-Start

• Internal Bootstrap Diode

• Cycle-by-Cycle Peak Current Limit

• Overtemperature Protection

• Available Package: 8-lead 3x3 mm wettable

flanks VDFN (see Package Type)

• Passes Automotive AEC-Q100 Reliability Testing

Applications

• Automotive DC/DC and 48V Systems

• Microcontroller Bias Supply

• 24V Industrial Input DC-DC Conversion

• Set-Top Boxes, DSL Cable Modems

• Wall Cube Regulation

• SLA Battery-Powered Devices

• AC-DC Digital Control Power Sources

• Power Meters

• Medical and Health Care

• Distributed Power Supplies

General Description

The MCP16361/2/3 family of devices are highly

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

DC-DC converters in a compact 8-lead 3x3 mm VDFN

package that operates from input voltage sources up to

48V. Integrated features include a high-side switch,

fixed-frequency Peak Current Mode Control, Internal

Compensation, Power Good, Peak Current Limit and

Overtemperature Protection. The MCP16361/2/3

provides all the active functions for local DC-DC

conversion, with fast transient response and accurate

regulation.

High efficiency conversion is achieved by integrating

the current-limited, low-resistance, high-speed

N-Channel MOSFET and associated drive circuitry.

High switching frequency minimizes the size of external

filtering components resulting in a small size solution.

The MCP16361/2/3 can supply 3A of continuous

current while regulating the output voltage from 2.0V to

24V. An integrated, 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

systems.

The MCP16361 is capable of running in PFM/PWM

mode. It switches in PFM mode for light load conditions

and for large buck conversion ratios. This results in a

higher efficiency over all load ranges.

By comparison, the MCP16362 runs in PWM-only

mode, and is recommended for applications in which

the low-frequency component associated with PFM

mode of operation is not desirable.

Besides the two aforementioned options, the

MCP16363 is designed for EMI constrained

applications where reduced peak emissions are

required. This is achieved by sweeping the switching

frequency over a 10% range above the 2.2 MHz

nominal value.

Output voltage is set with an external resistor divider.

The Power Good output pin will go from logic low to

logic high (through an external pull-up resistor) once

the output voltage is within 93% of the nominal set

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

off. While off, only a few micro-amps of current are

consumed from the input.

The MCP16361/2/3 is offered in a space-saving 8-lead

3x3 mm VDFN wettable flanks surface mount package.

The MCP16361/2/3 also passes automotive AEC-

Q100 reliability testing.

48V Input, 3A Output, 2.2 MHz Switching Frequency,

Integrated Switch Step-Down Regulator

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	MCP16362

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