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MCP16361

48V Input, 2.2MHz, PFM/PWM, Buck Regulator

Status: In Production

Features:

  • Input Voltage Range: 4.0V to 48V
  • Integrated N-Channel Buck Switch: 100 mOhm
  • 3A Output Current
  • 2.2 MHz Switching Frequency
  • Quiescent Current: 18 μA typical (PFM not switching)
  • Automatic Pulse Frequency Modulation/Pulse Width Modulation (PFM/PWM) Operation
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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 wettable flank 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.

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 92% 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

Additional Features
  • Input Voltage Range: 4.0V to 48V
  • Adjustable Output Voltage Range: 2.0V to 24V
  • Integrated N-Channel Buck Switch: 100 mOhm
  • 3A Output Current
  • 2.2 MHz Switching Frequency
  • Quiescent Current: 18 μA typical (PFM not switching)
  • Automatic Pulse Frequency Modulation/Pulse Width Modulation (PFM/PWM) Operation
  • Shutdown Current: 5 μA typical
  • 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 VDFN wettable flanks surface mount package
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
Minimum Input Voltage (V)
4
Maximum Input Voltage (V)
48
Output Current (mA) Max
3000
Switching Frequency (kHz)
2200
Input Voltage Range Min (V)
4
Input Voltage Range Max (V)
48
Output Current (mA) max1
3000
Operating Temp Range
-40 to 125
Vout Min (V)
2
Vout Max (V)
24
Quiescent Current (mA) typ
0.018
Light Load Efficiency Mode
Yes
Switch current (A) typ
4.5
SHUTDOWN Current (µA) (Typ)
5
# of Outputs
1
Vfb (V)
0.8
Duty Cycle Max (%)1
87

Documents

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Data Sheets

User Guides

Development Environment

  • Integrated Development Environments
Integrated Development Environments
EV27C97A
MCP16361 Evaluation Board ( EV27C97A )

The MCP16361/2/3 can regulate the output voltage over a wide 2V to 20V range, and typically can deliver over 3A of load current at 3.3V output, when supplied from a 12V input. The maximum input voltage range is 4V to 48V. The regulated voltage (VOUT) should be lower than the input voltage (VIN).

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Dimension
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP16361T-E/NMX
0.000000
0.000000
8
VDFN
3x3x0.9mm
Matte Tin
e3
MCP16361T-E/NMXVAO
0.000000
0.000000
8
VDFN
3x3x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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