MCP16301 Datasheet, PDF (1/38 Pages) Microchip Technology – High Voltage Input Integrated Switch Step-Down Regulator

MCP16301
High Voltage Input Integrated Switch Step-Down Regulator
Features
• Up to 96% Typical Efficiency
• Input Voltage Range: 4.0V to 30V
• Output Voltage Range: 2.0V to 15V
• 2% Output Voltage Accuracy
• Integrated N-Channel Buck Switch: 460 mΩ
• 600 mA Output Current
• 500 kHz Fixed Frequency
• Adjustable Output Voltage
• 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): 3.5V
• Overtemperature Protection
• Available Package: SOT-23-6
Applications
• PIC^®/dsPIC Microcontroller 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
General Description
The MCP16301 is a highly integrated, high-efficiency,
fixed frequency, step-down DC-DC converter in a
popular 6-pin SOT-23 package that operates from input
voltage sources up to 30V. Integrated features include
a high side switch, fixed frequency Peak Current Mode
Control, internal compensation, peak current limit and
overtemperature protection. Minimal 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 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 is offered in a space saving SOT-23-6
surface mount package.
Package Type
MCP16301
6-Lead SOT-23
BOOST 1
6 SW
GND 2
V_FB 3
5 V_IN
4 ^EN
© 2011 Microchip Technology Inc.
DS25004A-page 1