The requested file:
https://pdf.datasheetcatalog.com/datasheet/stmicroelectronics/4299.pdf
is the data sheet for the following electronic components:

ST Microelectronics

#	Part Name	Description
1	UC2842BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
2	UC2842BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
3	UC2843BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
4	UC2843BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
5	UC2844BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
6	UC2844BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
7	UC2845BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
8	UC2845BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
9	UC3842BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
10	UC3842BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
11	UC3843BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
12	UC3843BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
13	UC3844BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
14	UC3844BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
15	UC3845BD	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
16	UC3845BN	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

Select the part name and then you can download the datasheet in PDF format.