UC3877DWPTR

Texas Instruments UC3877DWPTR

Part Number:
UC3877DWPTR
Manufacturer:
Texas Instruments
Ventron No:
3248534-UC3877DWPTR
Description:
IC REG CTRLR PWM CM/VM 28-SOIC
ECAD Model:
Datasheet:
UC1875-78, 2875-78, 3875-78

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Specifications
Texas Instruments UC3877DWPTR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments UC3877DWPTR.
  • Mounting Type
    Surface Mount
  • Package / Case
    28-SOIC (0.295, 7.50mm Width)
  • Surface Mount
    YES
  • Number of Pins
    28
  • Operating Temperature
    0°C~70°C TA
  • Packaging
    Tape & Reel (TR)
  • Part Status
    Obsolete
  • Moisture Sensitivity Level (MSL)
    2 (1 Year)
  • Number of Terminations
    28
  • ECCN Code
    EAR99
  • Additional Feature
    CAN ALSO BE CONFIGURED IN CURRENT MODE
  • Subcategory
    Switching Regulator or Controllers
  • Technology
    BIPOLAR
  • Terminal Position
    DUAL
  • Terminal Form
    GULL WING
  • Peak Reflow Temperature (Cel)
    NOT SPECIFIED
  • Number of Functions
    1
  • Terminal Pitch
    1.27mm
  • Reach Compliance Code
    unknown
  • Frequency
    1MHz
  • Reflow Temperature-Max (s)
    NOT SPECIFIED
  • Base Part Number
    UC3877
  • Pin Count
    28
  • Number of Outputs
    4
  • Qualification Status
    Not Qualified
  • Output Voltage
    1.7V
  • Input Voltage-Nom
    12V
  • Analog IC - Other Type
    SWITCHING CONTROLLER
  • Output Current
    500mA
  • Voltage - Supply (Vcc/Vdd)
    9.5V~20V
  • Control Features
    Frequency Control, Soft Start, Sync
  • Topology
    Full-Bridge
  • Control Mode
    VOLTAGE-MODE
  • Control Technique
    RESONANT CONTROL
  • Nominal Input Voltage
    20V
  • Switcher Configuration
    PHASE-SHIFT
  • Fault Protection
    Current Limiting
  • Duty Cycle
    100%
  • Output Isolation
    Non-Isolated
  • Voltage - Start Up
    10.75V
  • Height Seated (Max)
    2.65mm
  • Length
    17.9mm
  • Width
    7.5mm
  • RoHS Status
    ROHS3 Compliant
Description
UC3877DWPTR Overview
The operating temperature for this particular electronic component is between 0°C and 70°C, making it suitable for use in a wide range of environments. However, its part status is listed as obsolete, indicating that it may no longer be readily available for purchase. The moisture sensitivity level (MSL) is 2, meaning that it can withstand moderate levels of moisture for up to 1 year. With a frequency of 1MHz, this component is capable of handling high-speed operations. It is currently not qualified for use, but it does have fault protection in the form of current limiting. The duty cycle is 100%, ensuring consistent performance. The voltage supply range is between 9.5V and 20V, and the start-up voltage is 10.75V. Lastly, the component has a length of 17.9mm, making it compact and suitable for use in smaller devices.

UC3877DWPTR Features
Packaged with 28-SOIC (0.295, 7.50mm Width)
With 28 pins
Output Current at 500mA

UC3877DWPTR Applications
There are a lot of Texas Instruments UC3877DWPTR AC DC Converters applications.

Set-top boxes
Small off-line low voltage power supplies
MPS parts
LED Driver
Set Top Boxes (STB)
Open Frame Switching Power Supply
Consumer electronics
Vacuum Cleaner
Appliance Power Supplies
Adapter/Charger for Cordless Phones
UC3877DWPTR More Descriptions
Current Limiting Tape & Reel (TR) R-PDSO-G28 VOLTAGE-MODE dc ac converter 20V 17.9mm 1MHz 3A
Pulse Width Modulation (PWM) Controller IC; Output Current:500mA; Frequency:1000kHz; Supply Voltage Range:11V to 20V; Digital IC Case Style:SOIC; No. of Pins:28; Operating Temperature Range:0°C to 70°C
The UC1875 family of integrated circuits implements control of a bridge power stage by phase-shifting the switching of one half-bridge with respect to the other, allowing constant frequency pulse-width modulation in combination with resonant, zero-voltage switching for high efficiency performance at high frequencies. This family of circuits may be configured to provide control in either voltage or current mode operation, with a separate over-current shutdown for fast fault protection. A programmable time delay is provided to insert a dead-time at the turn-on of each output stage. This delay, providing time to allow the resonant switching action, is independently controllable for each output pair (A-B, C-D). With the oscillator capable of operation at frequencies in excess of 2MHz, overall switching frequencies to 1MHz are practical. In addition to the standard free running mode, with the CLOCKSYNC pin, the user may configure these devices to accept an external clock synchronization signal, or may lock together up to 5 units with the operational frequency determined by the fastest device. Protective features include an undervoltage lockout which maintains all outputs in an active-low state until the supply reaches a 10.75V threshold. 1.5V hysteresis is built in for reliable, boot-strapped chip supply. Over-current protection is provided, and will latch the outputs in the OFF state within 70nsec of a fault. The current-fault circuitry implements full-cycle restart operation. Additional features include an error amplifier with band-width in excess of 7MHz, a 5V reference, provisions for soft-starting, and flexible ramp generation and slope compensation circuitry. These devices are available in 20-pin DIP, 28-pin "bat-wing" SOIC and 28 lead power PLCC plastic packages for operation over both 0C to 70C and –25C to 85C temperature ranges; and in hermetically sealed cerdip, and surface mount packages for –55C to 125C operation.
Certification
  • ISO 9001
  • ISO 13485
  • ISO 45001
  • ASA
  • ESD
  • DUNS
  • SMTA
  • ROHS

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