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UC3906QG3 - Texas Instruments

Description: Battery Management Lead-Acid Linear Charge Mngt IC

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UC3906QG3 - Texas Instruments - PCB symbol
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PCB Footprints
UC3906QG3 - Texas Instruments PCB footprint - Plastic Leaded Chip Carrier - Plastic Leaded Chip Carrier - FN0020A_PLCC20
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3D Models
UC3906QG3 - Texas Instruments - 3D model - Plastic Leaded Chip Carrier - FN0020A_PLCC20
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UC3906QG3 Details

  • Manufacturer Part Number:

    UC3906QG3

  • Brand Name:

    Texas Instruments

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    QLCC

  • Package Description:

    LCC-20

  • Pin Count:

    20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    0

  • Adjustable Threshold:

    NO

  • Analog IC - Other Type:

    LINEAR BATTERY CHARGER

  • JESD-30 Code:

    S-PQCC-J20

  • JESD-609 Code:

    e3

  • Length:

    8.965 mm

  • Moisture Sensitivity Level:

    2

  • Number of Channels:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Operating Temperature-Min:

    -20 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    QCCJ

  • Package Equivalence Code:

    LDCC20,.4SQ

  • Package Shape:

    SQUARE

  • Package Style:

    CHIP CARRIER

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    4.57 mm

  • Supply Current-Max (Isup):

    3.6 mA

  • Supply Voltage-Max (Vsup):

    40 V

  • Supply Voltage-Min (Vsup):

    5 V

  • Supply Voltage-Nom (Vsup):

    10 V

  • Surface Mount:

    YES

  • Technology:

    BIPOLAR

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    J BEND

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    QUAD

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

    30

  • Width:

    8.965 mm

UC3906QG3 Frequently Asked Questions (FAQs)

  • The UC3906QG3 is a high-frequency device, and proper layout and placement are crucial for its operation. TI recommends a 4-layer PCB with a solid ground plane, and the device should be placed close to the input capacitors. The output inductor and diode should be placed close to the device, and the feedback components should be routed away from the high-frequency nodes.
  • The input capacitor should have a low ESR and be rated for the maximum input voltage. A ceramic capacitor with an X7R or X5R dielectric is recommended. The output capacitor should also have a low ESR and be rated for the maximum output voltage. A ceramic or tantalum capacitor is recommended. The capacitor values should be chosen based on the desired output ripple and transient response.
  • The UC3906QG3 is rated for operation up to 125°C ambient temperature, but the device's junction temperature should not exceed 150°C. The device's thermal resistance (θJA) is 30°C/W, and the maximum power dissipation is 2.5W.
  • The output voltage of the UC3906QG3 can be adjusted by changing the feedback resistors (R1 and R2) or the feedback voltage (VFB). The output voltage is determined by the ratio of R1 to R2, and the feedback voltage is typically set to 2.5V. The output voltage can be calculated using the formula: VOUT = VFB x (1 + R1/R2).
  • The minimum input voltage for the UC3906QG3 is 3.5V, but the device can operate down to 3V with reduced performance. The device's undervoltage lockout (UVLO) threshold is 2.5V, and the device will shut down if the input voltage falls below this threshold.

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UC3906QG3 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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