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UC3909DWG4 - Texas Instruments

Description: Texas Instruments UC3909DWG4, Lead-Acid, Battery Charge Controller, 4.5mA 20-Pin, SOIC

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UC3909DWG4 - Texas Instruments - PCB symbol
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PCB Footprints
UC3909DWG4 - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW (R-PDSO-G20)
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UC3909DWG4 - Texas Instruments - 3D model - Small Outline Packages - DW (R-PDSO-G20)
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UC3909DWG4 Details

  • Manufacturer Part Number:

    UC3909DWG4

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    SOIC

  • Package Description:

    GREEN, PLASTIC, SOIC-20

  • Pin Count:

    16

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Analog IC - Other Type:

    BATTERY CHARGE CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    35 V

  • Input Voltage-Min:

    8.8 V

  • Input Voltage-Nom:

    15 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Moisture Sensitivity Level:

    2

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Current-Max:

    0.1 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Screening Level:

    TS 16949

  • Seated Height-Max:

    2.64 mm

  • Supply Current-Max (Isup):

    19 mA

  • Supply Voltage-Nom (Vsup):

    15 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    SINGLE

  • Switching Frequency-Max:

    242 kHz

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    NICKEL PALLADIUM GOLD

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    7.5 mm

UC3909DWG4 Frequently Asked Questions (FAQs)

  • A good PCB layout is crucial for the UC3909DWG4. TI recommends a 4-layer board with a solid ground plane, and the IC should be placed near the input capacitors. Keep the input and output traces short and separate to minimize noise and EMI. Refer to the TI application note SLUA271 for more details.
  • Choose input capacitors with low ESR (Equivalent Series Resistance) and high ripple current rating. For output capacitors, select ones with low ESR and high capacitance. The UC3909DWG4 datasheet recommends 10uF to 22uF input capacitors and 22uF to 47uF output capacitors. Consider using X5R or X7R ceramic capacitors or electrolytic capacitors with a voltage rating of 1.5 to 2 times the input voltage.
  • The UC3909DWG4 has an absolute maximum input voltage rating of 18V. However, the recommended operating input voltage range is 7V to 15V. Exceeding the maximum rating can damage the IC.
  • The UC3909DWG4 has a maximum junction temperature (TJ) of 150°C. Ensure good airflow around the IC, and consider using a heat sink if the device is expected to operate at high temperatures or high currents. Monitor the IC's temperature using the thermal pad (VCC pin) and adjust the design accordingly.
  • The EN pin is used to enable or disable the UC3909DWG4. When EN is high (logic level), the IC is enabled, and when EN is low (logic level), the IC is disabled. Use the EN pin to implement power sequencing, shutdown, or low-power modes in your design.

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UC3909DWG4 Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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UC3909DWG4 Alternates

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Image Part Number Model
Part Image UC2909DWG4 Rochester Electronics LLC

0.1A BATTERY CHARGE CONTROLLER, 242kHz SWITCHING FREQ-MAX, PDSO20, GREEN, SOIC-20
Part Image UC3909DW Rochester Electronics LLC

0.1A BATTERY CHARGE CONTROLLER, 242kHz SWITCHING FREQ-MAX, PDSO20, GREEN, PLASTIC, SOIC-20
Part Image UC2909DWTR Rochester Electronics LLC

0.1A BATTERY CHARGE CONTROLLER, 242kHz SWITCHING FREQ-MAX, PDSO20, GREEN, SOIC-20
Part Image UC3909DWTRG4 Texas Instruments

Battery Charge Controller, Current-mode, 0.1A, 242kHz Switching Freq-Max, BIPolar, PDSO20
Part Image UC3909DW Texas Instruments

Battery Charge Controller, Current-mode, 0.1A, 242kHz Switching Freq-Max, BIPolar, PDSO20
For a full list of alternate parts for UC3909DWG4, check out Findchips.com