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General Description

The MCP16301/H devices are highly integrated,

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

converters in a popular 6-pin SOT-23 package, that

operate from input voltage sources up to 36V.

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 associated drive circuitry. High

switching frequency minimizes the size of external

filtering components, resulting in a small solution size.

The MCP16301/H devices can supply 600 mA of

continuous current while regulating the output voltage

from 2.0V to 15V. 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 EN input is used to turn the device on and off.

While turned off, only a few micro amps of current are

consumed from the input for power shedding and load

distribution applications.

Output voltage is set with an external resistor divider.

The MCP16301/H devices are offered in a

space-saving SOT-23-6 surface mount package.

Features

? Up to 96% Typical Efficiency

? Input Voltage Range:

- 4.0V to 30V (MCP16301)

- 4.7V to 36V (MCP16301H)

? Output Voltage Range: 2.0V to 15V

? 2% Output Voltage Accuracy

? Passes Automotive AEC-Q100 Reliability Testing

? Integrated N-Channel Buck Switch: 460 m?

? Minimum 600 mA Output Current Over All Input

Voltage Range (See Figure 2-6 for Maximum

Output Current vs. VIN):

- Up to 1A output current at 3.3V, 5V and 12V

VOUT, 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

? Stable with Ceramic Capacitors

? Cycle-by-Cycle Peak Current Limit

? Undervoltage Lockout (UVLO): 3.5V

? Overtemperature Protection

? Available Package: SOT-23-6

Applications

? PIC? Microcontroller and dsPIC? Digital Signal

Controller Bias Supply

? 24V 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

? D2 Package Linear Regulator Replacement

- See Figure 5-2

? Consumer

? Medical and Health Care

? Distributed Power Supplies