Product Summary

The UCC3804N is a Low-Power BiCMOS Current-Mode PWM. The UCC3804N has the same pin configuration as the UC1842/3/4/5 family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input. The UCC3804N offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of critical voltage levels. Lower reference parts such as the the higher reference and the higher UVLO hysteresis of the UCC3804N makes these ideal choices for use in off-line power supplies.

Parametrics

UCC3804N absolute maximum ratings: (1)VCC Voltage (Note 2): 12.0V; (2)VCC Current (Note 2): 30.0mA; (3)OUT Current: ±1.0A; (4)OUT Energy (Capacitive Load): 20.0μJ; (5)Analog Inputs (FB, CS): –0.3V to 6.3V; (6)Power Dissipation at TA < +25℃ (N or J Package): 1.0W; (7)Power Dissipation at TA < +25℃ (D Package): 0.65W; (8)Power Dissipation at TA < +25℃ (L Package): 1.375W; (9)Storage Temperature Range: –65℃ to +150℃; (10)Lead Temperature (Soldering, 10 Seconds): +300℃.

Features

UCC3804N features: (1)100μA Typical Starting Supply Current; (2)500μA Typical Operating Supply Current; (3)Operation to 1MHz; (4)Internal Soft Start; (5)Internal Fault Soft Start; (6)Internal Leading-Edge Blanking of the Current Sense Signal; (7)1 Amp Totem-Pole Output; (8)70ns Typical Response from Current-Sense to Gate Drive Output; (9)1.5% Tolerance Voltage Reference.

Diagrams

UCC3804N pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
UCC3804N
UCC3804N
Texas Instruments
Current Mode PWM Controllers Low-Power BiCMOS Current-Mode PWM
Data Sheet
0-1: $1.99
1-25: $1.82
25-100: $1.45
100-250: $1.27
UCC3804NG4
UCC3804NG4
Texas Instruments
Current Mode PWM Controllers Low-Power BiCMOS Current-Mode PWM
Data Sheet
0-1: $2.03
1-25: $1.66
25-100: $1.45
100-250: $1.27