UC2843AQ Datasheet Current-mode Pwm Controller

Manufacturer: Texas Instruments

Overview: UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ CURRENT-MODE PWM CONTROLLER D Extended Temperature Performance of –40°C to 125°C D Optimized for Off-line and DC to DC Converters D Low Start Up Current (<0.

This datasheet includes multiple variants, all published together in a single manufacturer document.

Datasheet Details

Part number	UC2843AQ
Manufacturer	Texas Instruments
File Size	698.59 KB
Description	CURRENT-MODE PWM CONTROLLER
Datasheet	UC2843AQ UC2842AQ Datasheet (PDF)

General Description

SGLS164 – APRIL 2003 D 8-PIN PACKAGE (TOP VIEW) COMP VFB ISENSE RT/CT 1 2 3 4 8 VREF 7 VCC 6 OUTPUT 5 GND D 14-PIN PACKAGE (TOP VIEW) COMP NC VFB NC ISENSE NC RT/CT 1 2 3 4 5 6 7 14 VREF 13 NC 12 VCC 11 VC 10 OUTPUT 9 GND 8 PWR GND The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family.

Providing the necessary

Key Features

to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed to be less than 0.5 mA. Oscillator discharge is trimmed to 8.3 mA. During under voltage lockout, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V. The difference between members of this family are shown in the table below. PART NUMBER UC2842A UC2843A UC2844A UC2845A UVLO ON 16 V 8.5 V 16 V 8.5 V UVLO OFF 10 V 7.9 V 10 V 7.9 V MAXIMU.

UC2843AQ Distributor

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