|Category||Semiconductors => Power Management => Offline and Isolated DC/DC Controllers and Converters => PWM and Resonant Controller|
|Part family||UCC3801 Low-Power BiCMOS Current-Mode PWM|
|Title||Current Mode PWM Controllers|
|Description||Low-Power BiCMOS Current-Mode PWM 8-SOIC 0 to 70|
|Company||Texas Instruments, Inc.|
|Datasheet||Download UCC3801 datasheet
|Cross ref.||Similar parts: MAX887HESA, MAX887HESA+, MAX887HESA+T, MAX887HESA-T, NCP1010AP130, NCP1011AP130, NCP1011AP130G, UCC2800PW, UCC2802PW, UCC2803PW|
|Operating Temperature Range(C)||0 to 70|
|Approx. Price (US$)||1.10 | 1ku|
|Features||Error Amplifier,Leading Edge Blanking,Multi-topology,Soft Start|
|UVLO Thresholds On/Off(V)||9.4/7.4|
|Pin nb||Package type||Ind std||JEDEC code||Package qty||Carrier||Device mark||Width (mm)||Length (mm)||Thick (mm)||Pitch (mm)|
|• Conditioning a Switch-mode Power Supply Current Signal Using TI Op Amps
The switch-mode power supply primary current is often sensed using a power resistor. Using an op amp to amplify the current-sense signal can reduce cost and improve noise performance and efficiency. This report reviews the advantages of using an op amp cir | Doc
|• U-133A UCC3800/1/2/3/4/5 BiCMOS Current Mode Control IC's
The UCC3800 IC has several innovative features for general purpose current-mode controlled applications: high speed circuitry, undervoltage lockout, an op-amp type error amplifier, fast overcurrrent protection, a precision reference and a high-current tote | Doc
|• U-111, Practical Considerations in Current Mode Power Supplies
This application note explains the numerous PWM functions and ways to maximize their usefulness. It covers practical circuit design considerations, such as slope compensation, gate drive circuitry, external control functions, synchronization, and paralleli | Doc
|• UCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers
Since their introduction in the mid 1980?s, the bipolar UC3842 family of Pulse width modulation (PWM)controllers has grown to become the most widely-used control strategy in the power supply industry.  The reasons for success are quite clear, the device | Doc
|• Dual Output Boost Converter
The boost converter is modified to provide bipolar 12-V outputs from 5-V supply. Using the UCC3803 to control the basic boost converter building block, the -12-V outputs are generated using a coupled inductor and a flying capacitor. Output voltage regulati | Doc
|• DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802
The UCC3802 offers numerous advantages that allow the power supply design engineer to meet requirements for lower power for battery-operated equipment, higher switching frequencies for reduced magnetics size, higher levels of circuit integration for improv | Doc
|• DN-46 Highly Efficient Low Power DC to DC Inverter Converts +5V Input to -3V Out
This design note describes a flyback inverter application using the UCC3805. The application performs three functions: control, switching, and output rectification. A circuit schematic and a list of materials are included. | Doc
|• DN-56A, Single Switch Flyback Circuit Converts + 5 V to +/- 12 V for RS-232/422
A bipolar 12V supply from a single +5V input can be developed using a number of conventional approaches. A boost converter is the most logical for the +12V output; however, it cannot be used in some interface-circuit applications. One significant drawback | Doc
|• DN-65 Considerations in Powering BiCMOS ICs
Bipolar linear integrated circuits have been with us for years in the form of PWM and PFC controllers, supervisory circuits, and other circuits. Since these devices have traditionally used relatively high-voltage (35V) bipolar processes, powering was not a | Doc
|• DN-48 Versatile Low Power SEPIC Converter Accepts Wide Input Voltage Range
This design note describes an output converter for battery-powered and automotive applications. It uses a UCC3803 BiCMOS current-mode controller to provide a 5V output at full load of 100mA from an input of 2.5-13.5V after an initial startup at 5V. The UC3 | Doc
|• Understanding Buck-Boost Power Stages in Switchmode Power Supplies (Rev. A) | Doc|
|• DN-54 Innovative Buck Regulator Uses High Side N-Channel Switch Without Complex
This application note shows how the innovative UCC3803 BiCMOS PWM controller provides very high efficiency without complex gate drives by using a high-side N-channel switch. It converts +5 VDC to +3.3 VDC (or others) and draws only 40 microamps in standby | Doc
|• DN-43 Simple Techniques to Generate a Negative Voltage Bias Supply
A low-power negative supply voltage can be developed from a positive input supply using some very common PWM control ICs. Typical applications include generating a -5V to -12V supply for analog function ICs (OP amps), RS-232 communication circuits, and MOS | Doc
|• Differences Between the UCC3813 and the UCC3800 PWM Families
This application report discusses the parametric differences between the UCC3813 and UCC3800 PWM families of integrated circuits available from Texas Instruments. | Doc
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100µA Typical Starting Supply Current 500µA Typical Operating Supply Current Operation to 1MHz Internal Soft Start Internal Fault Soft Start Internal Leading-Edge Blanking of the Current Sense Signal 1 Amp Totem-Pole Output 70ns Typical Response from Current-Sense to Gate Drive Output 1.5% Tolerance Voltage Reference Same Pinout as UC3842 and UC3842ADESCRIPTION
The UCC1800/1/2/3/4/5 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 power supplies with minimal parts count. These devices have 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 UCC1800/1/2/3/4/5 family 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 UCC1803 and UCC1805 fit best into battery operated systems, while the higher reference and the higher UVLO hysteresis of the UCC1802 and UCC1804 make these ideal choices for use in off-line power supplies. The UCC180x series is specified for operation from C, o the UCC280x series is specified for operation from +85 C, and o the UCC380x series is specified for operation from +70 C.
VCC Voltage (Note 2). 12.0V VCC Current (Note 2). 30.0mA OUT Current. ±1.0A OUT Energy (Capacitive Load). 20.0µJ Analog Inputs (FB, CS). to 6.3V Power Dissipation or J Package). 1.0W Power Dissipation +25°C (D Package). 0.65W Storage Temperature Range. to +150°C Lead Temperature (Soldering, 10 Seconds). +300°C Note 1: Values beyond which damage may occur. All voltages are with respect to GND. All currents are positive into the specified terminal. Consult Unitrode databook for information regarding thermal specifications and limitations of packages. Note 2: In normal operation VCC is powered through a current limiting resistor. Absolute maximum of 12V applies when VCC is driven from a low impedance source such that ICC does not exceed 30mA (which includes gate drive current requirement).
ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for TA +125°C for TA +85°C for TA +70°C for UCC380x; VCC=10V (Note 3); RT=100k from REF to RC; CT=330pF from RC to GND; 0.1 F capacitor from VCC to GND; 0.1 F capacitor from VREF to GND. TA=TJ.
PARAMETER TEST CONDITIONS MIN Reference Section Output Voltage Load Regulation Line Regulation VCC=10V to Clamp VCC=10V to Clamp (IVCC=25mA) Total Variation Output Noise Voltage Long Term Stability Output Short Circuit UCCx800/1/2/4 (Note 7) UCCx803/5 (Note 10kHz, TJ=+25°C (Note TA=+125°C, 1000 Hours (Note mV mV/V V
UCC2800/1/2/3/4/5 UCC3800/1/2/3/4/5 ELECTRICAL CHARACTERISTICS Unless otherwise stated, these specifications apply for TA +125°C for TA +85°C for TA +70°C for UCC380x; VCC=10V (Note 3); RT=100k from REF to RC; CT=330pF from RC to GND; 0.1 F capacitor from VCC to GND; 0.1 F capacitor from VREF to GND. TA=TJ.
|Some Part number from the same manufacture Texas Instruments, Inc.|
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