UC1842A Datasheet | Texas Instruments

UC1842A, UC1843A, UC1844A, UC1845A UC2842A, UC2843A, UC2844A, UC2845A UC3842A, UC3843A, UC3844A, UC3845A SLUS224G - SEPTEMBER 1994 - REVISED JULY 2022 UCx84x A Current-Mode PWM Controller 1 Features - Optimized for Off-Line and DC-DC Converters - Low Start-Up Current (< 0.5 m A) - Trimmed Oscillator Discharge Current - Automatic Feedforward pensation - Pulse-by-Pulse Current Limiting - Enhanced Load Response Characteristics - Undervoltage Lockout With Hysteresis - Double Pulse Suppression - High-Current Totem Pole Output - Internally-Trimmed Bandgap Reference - Up to 500-k Hz Operation - Create a Custom Design Using the UCx84x A With the WEBENCH® Power Designer 2 Applications - Switch Mode Power Supplies (SMPS) - DC-DC Converters - Power Modules - Industrial PSU - Battery Operated PSU 3 Description The UCx84x A family of control devices is a pin-for-pin patible improved version of the UCx84x family. Providing the necessary Features to control currentmode or switched-mode power supplies, this family of devices has many improved Features : startup current is less than 0.5 m A, oscillator discharge is trimmed to 8.3 m A, and during UVLO, the output stage can sink at least 10 m A at less than 1.2 V for VCC over 5 V. Device Information(1) PART NUMBER PACKAGE BODY SIZE...