MCP1603LT-250I/OS
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Microchip Technology MCP1603LT-250I/OS

Part Number:
MCP1603LT-250I/OS
Manufacturer:
Microchip Technology
Ventron No:
3296355-MCP1603LT-250I/OS
Description:
IC REG BCK 2.5V 0.5A SYNC TSOT23
ECAD Model:
Datasheet:
MCP1603LT-250I/OS
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  • 1

    $1.0681

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  • 200

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    $0.3998

    $199.90

  • 1000

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Part Overview
Description
The MCP1603/B/L is a high-efficiency, fully-integrated 500 mA synchronous buck regulator with a 2.7V to 5.5V input voltage range. It is ideally suited for applications powered from 1-cell Li-lon or 2-cell/3-cell NiMH/NiCd batteries.
At heavy loads, the MCP1603/B/L operates in the 2.0 MHz fixed frequency pulse-width modulation (PWM) mode, providing a low noise, low-output ripple, small-size solution. When the load is reduced to light levels, the MCP1603/L automatically changes operation to a Pulse Frequency Modulation (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/L to achieve the highest efficiency over the entire operating current range.
The MCP1603B device disables the PFM mode switching and operates only in normal PWM mode over the entire load range (without skipping). MCP1603B is for applications that cannot tolerate the low-frequency output ripple associated with PFM switching.
The MCP1603/B/L family is available with either an adjustable or fixed-output voltage. The available fixed output voltage options for MCP1603/L are 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V, and for MCP1603B are 1.8 and 3.3V. When a fixed option is used, only three additional small external components are needed to form a complete solution. Couple this with the low profile, small-footprint packages, and the entire system solution is achieved with minimal size.
Additional protection features include: UVLO, overtemperature, and overcurrent protection.

Features
2.0 MHz, 500 mA Synchronous Buck Regulator
Over 90% Typical Efficiency
Output Current Up To 500 mA
Low PFM Quiescent Current - 45 μA, typical (MCP1603/L)
Low Shutdown Current 0.1 μA, typical
Adjustable Output Voltage: -0.8V to 4.5V
Fixed Output Voltage: -1.2V, 1.5V, 1.8V, 2.5V, 3.3V (MCP1603/L)
1.8V, 3.3V (MCP1603B)
2.0 MHz Fixed-Frequency PWM (Heavy Load)
Automatic PWM-to-PFM Mode Transition (MCP1603/L)
PWM Mode Only Option (MCP1603B)
100% Duty Cycle Operation
Internally Compensated
Undervoltage Lockout (UVLO)
Overtemperature Protection
Space Saving Packages:
5-Lead TSOT, Two Pinout Types (MCP1603/L)
8-Lead 2 x 3 DFN

Applications
Cellular Telephones
Portable Computers
Organizers / PDAs
USB Powered Devices
Digital Cameras
Portable Equipment
5V or 3.3V Distributed Systems
Headsets
Specifications
Microchip Technology MCP1603LT-250I/OS technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology MCP1603LT-250I/OS.
  • Factory Lead Time
    5 Weeks
  • Mount
    Surface Mount
  • Mounting Type
    Surface Mount
  • Package / Case
    SOT-23-5 Thin, TSOT-23-5
  • Number of Pins
    5
  • Operating Temperature
    -40°C~125°C TJ
  • Packaging
    Tape & Reel (TR)
  • Published
    2005
  • JESD-609 Code
    e3
  • Pbfree Code
    yes
  • Part Status
    Active
  • Moisture Sensitivity Level (MSL)
    1 (Unlimited)
  • Number of Terminations
    5
  • ECCN Code
    EAR99
  • Terminal Finish
    Matte Tin (Sn) - annealed
  • Additional Feature
    IT CAN ALSO OPERATE WITH PULSE FREQUENCY MODULATION
  • Subcategory
    Switching Regulator or Controllers
  • Terminal Position
    DUAL
  • Terminal Form
    GULL WING
  • Peak Reflow Temperature (Cel)
    260
  • Reflow Temperature-Max (s)
    40
  • Base Part Number
    MCP1603
  • Function
    Step-Down
  • Number of Outputs
    1
  • Efficiency
    90 %
  • Voltage - Input (Max)
    5.5V
  • Output Voltage
    2.5V
  • Output Type
    Fixed
  • Operating Supply Voltage
    5.5V
  • Voltage - Input (Min)
    2.7V
  • Input Voltage-Nom
    3.6V
  • Analog IC - Other Type
    SWITCHING REGULATOR
  • Output Configuration
    Positive
  • Current - Output
    500mA
  • Topology
    Buck
  • Control Mode
    CURRENT-MODE
  • Frequency - Switching
    2MHz
  • Control Technique
    PULSE WIDTH MODULATION
  • Synchronous Rectifier
    Yes
  • Min Output Voltage
    2.5V
  • Length
    3mm
  • Width
    2mm
  • Radiation Hardening
    No
  • RoHS Status
    ROHS3 Compliant
  • Lead Free
    Lead Free
Certification
  • ISO 9001
  • ISO 13485
  • ISO 45001
  • ASA
  • ESD
  • DUNS
  • SMTA
  • ROHS

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