Product Summary

The UCC2809D-2 is a BCDMOS economy low power integrated circuit contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count.

Parametrics

UCC2809D-2 absolute maximum ratings: (1)VDD: 19V; (2)IVDD: 25mA; (3)IOUT (tpw < 1μs and Duty Cycle < 10%): –0.4A to 0.8A; (4)RT1, RT2, SS: –0.3V to REF + 0.3V; (5)IREF: 15mA; (6)Storage Temperature: –65°C to +150°C; (7)Junction Temperature: –55°C to +150°C; (8)Lead Temperature (Soldering, 10 sec.): +300°C.

Features

UCC2809D-2 features: (1)User Programmable Soft Start With Active Low Shutdown; (2)User Programmable Maximum Duty Cycle; (3)Accessible 5V Reference; (4)Undervoltage Lockout; (5)Operation to 1MHz; (6)0.4A Source/0.8A Sink FET Driver; (7)Low 100μA Startup Current.

Diagrams

UCC2809D-2 pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
UCC2809D-2
UCC2809D-2
Texas Instruments
Primary & Secondary Side PWM Controllers Economy Primary Side Controller
Data Sheet
0-1: $1.60
1-25: $1.46
25-100: $1.17
100-250: $1.03
UCC2809D-2G4
UCC2809D-2G4
Texas Instruments
Primary & Secondary Side PWM Controllers Economy Primary Side Controller
Data Sheet
0-1: $1.60
1-25: $1.35
25-100: $1.17
100-250: $1.03