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LT1959IR#PBF

Linear Technology LT1959IR#PBF

Part Number:
LT1959IR#PBF
Manufacturer:
Linear Technology
Ventron No:
3753850-LT1959IR#PBF
Description:
IC REG BUCK SEPIC ADJ 4.5A D2PAK
ECAD Model:
Datasheet:
LT1959IR#PBF

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Overview
Description
The LT1959 is a 4.5A, 500kHz step-down switching regulator that operates with input voltages as low as 4V and output voltages down to 1.21V. It uses all surface mount components and has a reduced inductor size of 1.8µH. The LT1959 features a saturating switch design with a shutdown current of 15µA and is easily synchronizable. It also has cycle-by-cycle current limiting and current mode control.

Features
Operates with input as low as 4V
Output range down to 1.21V
Constant 500kHz switching frequency
Uses all surface mount components
Inductor size reduced to 1.8µH
Saturating switch design: 0.079Ω
Shutdown current: 15µA
Easily synchronizable
Cycle-by-cycle current limiting
4.5A switch
Current mode control

Applications
Portable computers
Battery-powered systems
Battery chargers
Distributed power
5V to 3.3V conversion
5V to 2.5V conversion
5V to 1.8V conversion
Specifications
Linear Technology LT1959IR#PBF technical specifications, attributes, parameters and parts with similar specifications to Linear Technology LT1959IR#PBF.
  • Lifecycle Status
    PRODUCTION (Last Updated: 1 week ago)
  • Factory Lead Time
    8 Weeks
  • Mounting Type
    Surface Mount
  • Package / Case
    TO-263-8, D2Pak (7 Leads Tab), TO-263CA
  • Surface Mount
    YES
  • Number of Pins
    7
  • Operating Temperature
    -40°C~125°C TJ
  • Packaging
    Tube
  • Published
    2000
  • JESD-609 Code
    e3
  • Part Status
    Active
  • Moisture Sensitivity Level (MSL)
    1 (Unlimited)
  • Number of Terminations
    7
  • ECCN Code
    EAR99
  • Terminal Finish
    Matte Tin (Sn) - with Nickel (Ni) barrier
  • Technology
    BIPOLAR
  • Terminal Position
    SINGLE
  • Terminal Form
    GULL WING
  • Peak Reflow Temperature (Cel)
    260
  • Time@Peak Reflow Temperature-Max (s)
    30
  • Base Part Number
    LT1959
  • Function
    Step-Down
  • Number of Outputs
    1
  • Voltage - Input (Max)
    15V
  • Output Voltage
    2.42V
  • Output Type
    Adjustable
  • Voltage - Input (Min)
    4.3V
  • Input Voltage-Nom
    5V
  • Analog IC - Other Type
    SWITCHING REGULATOR
  • Output Configuration
    Positive
  • Current - Output
    4.5A Switch
  • Max Output Voltage
    12.9V
  • Voltage - Output (Min/Fixed)
    1.21V
  • Topology
    Buck, SEPIC
  • Control Mode
    CURRENT-MODE
  • Frequency - Switching
    500kHz
  • Synchronous Rectifier
    No
  • Min Output Voltage
    1.21V
  • Width
    8.89mm
  • REACH SVHC
    No SVHC
  • RoHS Status
    ROHS3 Compliant
  • Lead Free
    Lead Free
Certification
  • ISO 9001
  • ISO 13485
  • ISO 45001
  • ASA
  • ESD
  • DUNS
  • SMTA
  • ROHS
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