UCC2808AQDR-1EP

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Texas Instruments

ENHANCED PRODUCT LOW POWER CURRENT MODE PUSH-PULL PWM

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UCC2808AQDR-1EP

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Texas Instruments

ENHANCED PRODUCT LOW POWER CURRENT MODE PUSH-PULL PWM

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Description Specifications Series Pricing CAD Documents

Description

General part information

UCC2808 Series

The UCC2808A-xQ1 is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC2808A-xQ1 contains all of the control and drive circuitry required for off-line or DC-to-DC fixed frequency current-mode switching power supplies with minimal external parts count.

The UCC2808A-xQ1 dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

The UCC2808A-xQ1 family offers a variety of package options and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery powered systems. Thresholds are shown in the ordering information table.

Technical Specifications

Parameters and characteristics for this part

Specification	UCC2808AQDR-1EP

Control Features	Frequency Control
Duty Cycle	49 %
Frequency - Switching	1 MHz
Internal Switch(s)	No
Mounting Type	Surface Mount
Operating Temperature (Max)	150 °C
Operating Temperature (Min)	-55 °C
Output Isolation	Isolated
Package Length	0.154 in
Package Name	8-SOIC
Package Width	3.9 mm
Topology	Push-Pull
Voltage - Start Up	12.5 V
Voltage - Supply (Vcc/Vdd) Maximum	15 V
Voltage - Supply (Vcc/Vdd) Minimum	8.3 V

UCC2808 Series

Low power current mode push-pull PWM with discharge transistor, 12.5/8.3V UVLO, -40°C to 85°C

Part	Output Isolation	Control Features	Voltage - Start Up	Topology	Package Length	Package Name	Package Width	Frequency - Switching	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Duty Cycle	Internal Switch(s)	Mounting Type	Operating Temperature (Min)	Operating Temperature (Max)	Synchronous Rectifier	Duty Cycle (Max)	Output Configuration	Function	Output Type	Number of Outputs	Clock Sync	Output Phases
Texas Instruments UCC2808AN-1	Isolated	Frequency Control	12.5 V	Full-Bridge Half-Bridge Push-Pull	0.3 in	8-DIP 8-PDIP	7.62 mm	1 MHz	8.3 V	15 V	49 %	No	Through Hole	-55 °C	150 °C
Texas Instruments UCC2808ADTR-2G4		Frequency Control		Push-Pull	0.154 in	8-SOIC	3.9 mm	194 kHz	4.1 V	15 V			Surface Mount	-40 °C	85 °C	No	49 %	Positive	Step-Down Step-Up	Transistor Driver	2	No	1
Texas Instruments UCC2808APW-2		Frequency Control		Push-Pull	0.173 in	8-TSSOP	4.4 mm	194 kHz	4.1 V	15 V			Surface Mount	-40 °C	85 °C	No	49 %	Positive	Step-Down Step-Up	Transistor Driver	2	No	1
Texas Instruments UCC2808D-2		Frequency Control		Push-Pull	0.154 in	8-SOIC	3.9 mm	194 kHz	4.1 V	15 V			Surface Mount	-40 °C	85 °C	No	49 %	Positive	Step-Down Step-Up	Transistor Driver	2	No	1
Texas Instruments UCC2808AN-1	Isolated	Frequency Control	12.5 V	Full-Bridge Half-Bridge Push-Pull	0.3 in	8-DIP 8-PDIP	7.62 mm	1 MHz	8.3 V	15 V	49 %	No	Through Hole	-55 °C	150 °C
Texas Instruments UCC2808APW-1	Isolated	Frequency Control	12.5 V	Full-Bridge Half-Bridge Push-Pull	0.173 in	8-TSSOP	4.4 mm	1 MHz	8.3 V	15 V	49 %	No	Surface Mount	-55 °C	150 °C
Texas Instruments UCC2808AQDR-1EP	Isolated	Frequency Control	12.5 V	Push-Pull	0.154 in	8-SOIC	3.9 mm	1 MHz	8.3 V	15 V	49 %	No	Surface Mount	-55 °C	150 °C
Texas Instruments UCC2808AN-2		Frequency Control		Push-Pull	0.3 in	8-DIP 8-PDIP	7.62 mm	194 kHz	4.1 V	15 V			Through Hole	-40 °C	85 °C	No	49 %	Positive	Step-Down Step-Up	Transistor Driver	2	No	1
Texas Instruments UCC2808D-2G4		Frequency Control		Push-Pull	0.154 in	8-SOIC	3.9 mm	194 kHz	4.1 V	15 V			Surface Mount	-40 °C	85 °C	No	49 %	Positive	Step-Down Step-Up	Transistor Driver	2	No	1
Texas Instruments UCC2808AQDR-2EP		Frequency Control		Push-Pull	0.154 in	8-SOIC	3.9 mm	194 kHz	4.1 V	15 V			Surface Mount	-40 °C	125 °C	No	49 %	Positive	Step-Down Step-Up	Transistor Driver	2	No	1

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

UCC2808A-1EP: Low Power Current Mode Push-Pull PWM datasheet (Rev. B)