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MCP1603

2MHz 500mA Synchronous PFM/PWM Buck Regulator

Status: In Production

Features:

  • Small packages: TSOT-23 and 2x3 DFN
  • PWM/PFM automatic transistion
  • Over current and temperature protection
  • Automatic PWM/PFM mode transition
  • Eff. 90%, Shutdown Current 100 nA
  • Small passives 4.5 microhenry, 4.5 microfarad
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MCP1603 is a high efficiency fully integrated 500 mA 2.0 MHz synchronous buck regulator ideally suited for Li-Ion/NiMH Battery powered application powered. At heavy loads, the MCP1603 operates in the 2.0 MHz fixed frequency PWM mode which provides a low noise, low output ripple, small-size solution. When the load is reduced to light levels, the MCP1603 automatically changes operation to a PFM mode to minimize quiescent current draw from the battery. No intervention is necessary for a smooth transition from one mode to another. These two modes of operation allow the MCP1603 to achieve the highest efficiency over the entire operating current range.

Additional Features
    • Small packages: TSOT-23 and 2x3 DFN
    • PWM/PFM automatic transistion
    • Over current and temperature protection
    • Automatic PWM/PFM mode transition
    • Eff. 90%, Shutdown Current 100 nA
    • Small passives 4.5 microhenry, 4.5 microfarad
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.7
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.8
Output Voltage Range Max (V)
4.5
Output Current (mA) max
500
Quiescent Current (mA) typ
0.045
Switching Frequency (kHz)
2000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 85
Vfb (V)
0.8
Duty Cycle Max (%)
100
SHUTDOWN Current (µA) (Typ)
0.1
Light Load Efficiency Mode
Yes

Documents

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Data Sheets

  
775KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MCP1603 Buck Converter Eval Board
MCP1603 Buck Converter Eval Board ( MCP1603EV )

The MCP1603 Buck Converter Demo Board uses Microchip’s MCP1603 device in a step-down application. The evaluation board is a fully functional platform to evaluate the MCP1603 buck regulator over its entire input voltage, output voltage, and current range.

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MCP1603T-330I/MC
0.015600
0.130606
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603-150I/MC
0.015600
0.033333
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603-180I/MC
0.015600
0.033333
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603-ADJI/MC
0.015600
0.033333
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603T-150I/MC
0.015600
0.130606
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603T-180I/MC
0.015600
0.130606
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603T-ADJI/MC
0.015600
0.130606
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603T-250I/MC
0.015600
0.130606
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603-250I/MC
0.015600
0.033333
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603-330I/MC
0.015600
0.033333
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603T-120I/MC
0.015600
0.130606
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603-120I/MC
0.015600
0.033333
8
DFN
2x3x0.9mm
Matte Tin
e3
MCP1603BT-180I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603BT-330I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603BT-ADJI/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603LT-150I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603T-150I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603T-180I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603T-330I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603T-ADJI/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603LT-180I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603LT-330I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603LT-ADJI/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603LT-250I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603LT-120I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603T-120I/OS
0.012800
0.033333
5
TSOT
-
Matte Tin
e3
MCP1603T-250I/OS
0.012800
0.033333
5
TSOT
-
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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