UCC3805 Series

12V, 1A low power BICMOS 1MHz current mode PWM with 4.1V/3.6V UVLO and 50% duty cycle, 0C to 70C

Catalog

12V, 1A low power BICMOS 1MHz current mode PWM with 4.1V/3.6V UVLO and 50% duty cycle, 0C to 70C

Part	Output Phases	Mounting Type	Output Configuration	Function	Output Type	Duty Cycle (Max)	Package / Case	Package / Case [y]	Package / Case [x]	Operating Temperature [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Supplier Device Package	Frequency - Switching	Control Features	Topology	Number of Outputs	Package / Case	Package / Case	Package / Case [custom]	Package / Case [custom]
Texas Instruments UCC3805DTRG4	1	Surface Mount	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-SOIC	3.9 mm	0.154 in	70 °C	3.6 V	12 V	8-SOIC	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1
Texas Instruments UCC3805D	1	Surface Mount	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-SOIC	3.9 mm	0.154 in	70 °C	3.6 V	12 V	8-SOIC	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1
Texas Instruments UCC3805DG4	1	Surface Mount	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-SOIC	3.9 mm	0.154 in	70 °C	3.6 V	12 V	8-SOIC	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1
Texas Instruments UCC3805N	1	Through Hole	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-DIP			70 °C	3.6 V	12 V	8-PDIP	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1	0.3 in	7.62 mm
Texas Instruments UCC3805DTR	1	Surface Mount	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-SOIC	3.9 mm	0.154 in	70 °C	3.6 V	12 V	8-SOIC	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1
Texas Instruments UCC3805DTR/81222	1	Surface Mount	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-SOIC	3.9 mm	0.154 in	70 °C	3.6 V	12 V	8-SOIC	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1
Texas Instruments UCC3805PW	1	Surface Mount	Positive	Step-Down Step-Up Step-Up/Step-Down	Transistor Driver	49 %	8-TSSOP			70 °C	3.6 V	12 V	8-TSSOP	31 kHz	Frequency Control	Boost Buck Flyback Forward Converter	1			0.173 "	4.4 mm

Catalog

12V, 1A low power BICMOS 1MHz current mode PWM with 4.1V/3.6V UVLO and 50% duty cycle, 0C to 70C

Key Features

• 100-µA typical starting supply current500-µA typical operating supply currentOperation up to 1 MHzInternal soft startInternal fault soft startInternal leading-edge blanking of the current sense signal1-A totem-pole output70-ns typical response from current-sense to gate drive output1.5% tolerance voltage referenceSame pinout as UC3842 and UC3842A100-µA typical starting supply current500-µA typical operating supply currentOperation up to 1 MHzInternal soft startInternal fault soft startInternal leading-edge blanking of the current sense signal1-A totem-pole output70-ns typical response from current-sense to gate drive output1.5% tolerance voltage referenceSame pinout as UC3842 and UC3842A

Description

The UCC280x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count. These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input. The UCC280x family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count. These devices have the same pin configuration as the UCx84x family, and also offer the added features of internal full-cycle soft start and internal leading-edge blanking of the current-sense input.