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ISL78171ARZ-T7A - Renesas Electronics

Description: The ISL78171 is a 6-channel, 50mA, LED driver capable of very high dynamic range dimming. It offers an integrated boost converter, six high precision, adjustable current sinks and a SMBus/I2C interface for digital programmability and extensive diagnostics. These features provide the ISL78171 with the capabilities to design a compact, highly versatile LED backlight for a wide variety of ambient lighting conditions. The integrated peak current mode PWM boost converter operates with a constant frequency and ca

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ISL78171ARZ-T7A - Renesas Electronics - PCB symbol
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PCB Footprints
ISL78171ARZ-T7A - Renesas Electronics PCB footprint - Quad Flat No-Lead - Quad Flat No-Lead - 20 Ld 3x4 QFN
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ISL78171ARZ-T7A - Renesas Electronics - 3D model - Quad Flat No-Lead - 20 Ld 3x4 QFN
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ISL78171ARZ-T7A Details

  • Manufacturer Part Number:

    ISL78171ARZ-T7A

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    QFN

  • Package Description:

    QFN-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    L20.3X4

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    18 Weeks

  • Date Of Intro:

    2017-10-20

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    7

  • Data Input Mode:

    SERIAL

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    R-PQCC-N20

  • JESD-609 Code:

    e3

  • Length:

    4 mm

  • Moisture Sensitivity Level:

    1

  • Multiplexed Display Capability:

    NO

  • Number of Functions:

    1

  • Number of Segments:

    54

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    CONSTANT-CURRENT

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HVQCCN

  • Package Equivalence Code:

    LCC20,.12X.16,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE

  • Packing Method:

    TR

  • Peak Reflow Temperature (Cel):

    260

  • Screening Level:

    AEC-Q100

  • Seated Height-Max:

    1 mm

  • Supply Current-Max:

    5 mA

  • Supply Voltage-Max:

    26.5 V

  • Supply Voltage-Min:

    4.5 V

  • Supply Voltage-Nom:

    12 V

  • Surface Mount:

    YES

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    NO LEAD

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    QUAD

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    3 mm

  • fmax-Min:

    0.03 MHz

ISL78171ARZ-T7A Frequently Asked Questions (FAQs)

  • A good PCB layout for the ISL78171ARZ-T7A involves keeping the input and output capacitors close to the device, using a solid ground plane, and minimizing the length of the input and output traces. A 4-layer PCB with a dedicated power plane and a solid ground plane is recommended.
  • To ensure stability, ensure that the output capacitor has a low ESR, the input capacitor is properly sized, and the feedback network is properly compensated. Additionally, ensure that the device is operated within its recommended operating conditions and that the PCB layout is optimized for the device.
  • The maximum ambient temperature range for the ISL78171ARZ-T7A is -40°C to +125°C. However, the device's performance may degrade at higher temperatures, and the maximum junction temperature should not exceed 150°C.
  • Yes, the ISL78171ARZ-T7A is suitable for high-reliability applications. It is manufactured using a robust process and has undergone rigorous testing to ensure its reliability. However, it is essential to follow proper design and manufacturing practices to ensure the device's reliability in the application.
  • To troubleshoot issues with the ISL78171ARZ-T7A, start by verifying that the device is properly powered and that the input and output voltages are within the recommended range. Check the PCB layout for any issues, and ensure that the device is operated within its recommended operating conditions. Use oscilloscopes and other diagnostic tools to identify the root cause of the issue.

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ISL78171ARZ-T7A Overview

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