• UC1875J CDIP-20
UC1875J CDIP-20

UC1875J

Resonant Controllers 500mA 1000kHz 20-Pin CDIP Tube

Inventory:7,395

  • 90-day after-sales guarantee
  • 365 Days Quality Guarantee
  • Genuine Product Guarantee
  • 7*24 hours service quarantee
  • Part Number : UC1875J

  • Package/Case : CDIP-20

  • Brands : TI

  • Components Categories : Switching Regulator or Controllers

  • Datesheet : UC1875J DataSheet (PDF)

Quick Inquiry

Please submit RFQ for UC1875J or email to us: Email: [email protected], we will contact you in 12 hours.

Overview of UC1875J

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 0°C to 70°C and –25°C to +85°C temperature ranges; and in hermetically sealed cerdip, and surface mount packages for –55°C to +125°C operation.

UC1875J

Key Features

  • Zero to 100% Duty Cycle Control
  • Programmable Output Turn-On Delay
  • Compatible with Voltage or Current Mode Topologies
  • Practical Operation at Switching Frequencies to 1MHz
  • Four 2A Totem Pole Outputs
  • 10MHz Error Amplifier
  • Undervoltage Lockout
  • Low Startup Current—150µA
  • Outputs Active Low During UVLO
  • Soft-Start Control
  • Latched Over-Current Comparator With Full Cycle Restart
  • Trimmed Reference

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Topology Full bridge Control mode Current, Feedforward, Voltage
Duty cycle (max) (%) 100 Switching frequency (max) (kHz) 1000
Features Full bridge UVLO thresholds on/off (V) 10.75/11.75
Operating temperature range (°C) -55 to 125 Rating Military
Gate drive (typ) (A) 2

Warranty & Returns

Warranty, Returns, and Additional Information

  • QA & Return Policy

    Parts Quality Guarantee: 365 days

    Returns for refund: within 90 days

    Returns for Exchange: within 90 days

  • Shipping and Package

    Shipping:For example, FedEx, SF, UPS, or DHL.UPS, or DHL.

    Parts Packaging Guarantee: Featuring 100% ESD anti-static protection, our packaging incorporates high toughness and superior buffering capabilities.

  • Payment

    For example, channels like VISA, MasterCard, UnionPay, Western Union, PayPal, and more.

    If you have specific payment channel preferences or requirements, please get in touch with our sales team for assistance.