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PCA9956BTW - NXP

Description: 24-bit 57 mA Constant current LED Driver with 1 MHz I2C interface in HTSSOP38 package

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Symbol
PCA9956BTW - NXP - PCB symbol
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PCB Footprints
PCA9956BTW - NXP PCB footprint - Other - Other - SOT1331-1_2022
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3D Models
PCA9956BTW - NXP - 3D model - Other - SOT1331-1_2022
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PCA9956BTW Details

  • Manufacturer Part Number:

    PCA9956BTW

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    HTSSOP-38

  • Country Of Origin:

    Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    NXP Semiconductors

  • YTEOL:

    5

  • Data Input Mode:

    SERIAL

  • Input Characteristics:

    STANDARD

  • Interface IC Type:

    LED DISPLAY DRIVER

  • JESD-30 Code:

    R-PDSO-G38

  • Length:

    9.7 mm

  • Multiplexed Display Capability:

    YES

  • Number of Functions:

    1

  • Number of Segments:

    24

  • Number of Terminals:

    38

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Characteristics:

    CONSTANT-CURRENT

  • Output Polarity:

    TRUE

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HTSSOP

  • Package Equivalence Code:

    TSSOP38,.25,20

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH

  • Seated Height-Max:

    1.1 mm

  • Supply Current-Max:

    21 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    3 V

  • Supply Voltage-Nom:

    3.3 V

  • Supply Voltage1-Max:

    5.5 V

  • Supply Voltage1-Min:

    3 V

  • Supply Voltage1-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.5 mm

  • Terminal Position:

    DUAL

  • Width:

    4.4 mm

  • fmax-Min:

    0.1 MHz

PCA9956BTW Frequently Asked Questions (FAQs)

  • The PCA9956BTW can sink or source up to 10mA per output, but it's recommended to limit the current to 5mA per output to ensure reliable operation and to prevent overheating.
  • The PCA9956BTW can be configured for 16-bit or 12-bit PWM resolution by setting the RES bit in the MODE1 register. For 16-bit resolution, set RES=0, and for 12-bit resolution, set RES=1.
  • The OE pin is used to enable or disable all output drivers simultaneously. When OE is low, all outputs are disabled, and when OE is high, all outputs are enabled. This pin can be used to quickly turn off all outputs for power-saving or to prevent output conflicts during initialization.
  • The PCA9956BTW has a built-in watchdog timer that can be enabled by setting the WDTEN bit in the MODE1 register. The watchdog timer can be configured to reset the device or generate an interrupt if the watchdog timer is not refreshed within a certain time period.
  • The recommended clock frequency for the PCA9956BTW is between 2MHz and 25MHz. The PWM frequency is determined by the clock frequency and the PWM resolution. For example, with a 25MHz clock and 16-bit PWM resolution, the PWM frequency is approximately 38.4kHz.

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PCA9956BTW Overview

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About NXP

NXP Semiconductors is a leading manufacturer of semiconductor devices with a wide range of semiconductor solutions, including microcontrollers, sensors, connectivity solutions, power management ICs, and security solutions. These products are used in a variety of applications such as automotive, industrial automation, smart homes, mobile devices, and more. NXP Semiconductors is one of the world’s largest semiconductor companies and is headquartered in Eindhoven, the Netherlands.

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