UC3842BNG onsemi
The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering. These devices are available in an 8−pin dual−in−line and surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage. The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering. These devices are available in an 8−pin dual−in−line and surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage. The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX843B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Onsemi UC3842BNG's Features
• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Latching PWM for Cycle−By−Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
• This is a Pb−Free and Halide−Free Device
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Latching PWM for Cycle−By−Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
• This is a Pb−Free and Halide−Free Device
Onsemi UC3842BNG's Characteristics
Type | Parameter |
|---|---|
Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Output Configuration | Active |
Topology | Boost, Flyback |
Output Phases | 1 |
Output Configuration | Positive, Isolation Capable |
RoHS Status | ROHS3 Compliant |
Voltage - Supply (Vcc/Vdd) | 10V ~ 30V |
Frequency - Switching | Up to 500kHz |
Duty Cycle (Max) | 96% |
Synchronous Rectifier | No |
Clock Sync | No |
Control Features | Frequency Control |
Mounting Type | Through Hole |
Operating Temperature | 0°C ~ 70°C (TA) |
Package / Case | 8-DIP (0.300", 7.62mm) |
Supplier Device Package | 8-PDIP |
Standard Package | 50 |
REACH Status | REACH Unaffected |
ECCN | EAR99 |
Function | Step-Up, Step-Up/Step-Down |
HTSUS | 8542.39.0001 |
Onsemi UC3842BNG's Datasheet
Onsemi UC3842BNG's Category- DC/DC Switching Regulators
DC-DC power chips are a type of power management chips, mainly used to convert DC voltages into different DC voltages. These chips play a crucial role in electronic devices, capable of providing stable voltage outputs and featuring high efficiency and small size.
The working principle of DC-DC power chips is mainly based on switching power supply technology. The input voltage is converted into the desired output voltage through continuous switching. During this process, switching elements such as transistors and field-effect transistors are periodically turned on and off, and the voltage conversion is achieved by changing the energy storage and release of inductors and capacitors. In addition, the control circuits in DC-DC chips will ensure the stable output of voltage by controlling the switching frequency and duty cycle of the switching elements according to the input and output voltage conditions.
Compared with traditional linear regulators, DC-DC power chips have higher efficiency, which can minimize energy losses and improve the performance of power supplies. Meanwhile, thanks to the integrated circuit technology, DC-DC chips can integrate multiple functional modules into one chip, thus significantly reducing the volume of the power supply, saving the internal space of the system, and enhancing the integration degree of the system. More detail: DC/DC Switching Regulators
The working principle of DC-DC power chips is mainly based on switching power supply technology. The input voltage is converted into the desired output voltage through continuous switching. During this process, switching elements such as transistors and field-effect transistors are periodically turned on and off, and the voltage conversion is achieved by changing the energy storage and release of inductors and capacitors. In addition, the control circuits in DC-DC chips will ensure the stable output of voltage by controlling the switching frequency and duty cycle of the switching elements according to the input and output voltage conditions.
Compared with traditional linear regulators, DC-DC power chips have higher efficiency, which can minimize energy losses and improve the performance of power supplies. Meanwhile, thanks to the integrated circuit technology, DC-DC chips can integrate multiple functional modules into one chip, thus significantly reducing the volume of the power supply, saving the internal space of the system, and enhancing the integration degree of the system. More detail: DC/DC Switching Regulators
Manufacturer of UC3842BNG - Onsemi
Onsemi (NASDAQ: ON) has been on the road to driving disruptive innovation and striving to build a better future. Focused on the automotive and industrial end point markets, the company is currently accelerating change and embracing the transformation of megatrends, including automotive electrification and automotive safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. Onsemi's smart power and sensing technologies, with a highly differentiated portfolio of innovative products, solve the world's complex challenges and puzzles, leading the way to create a safer, cleaner, and smarter world.
Onsemi has a responsive, reliable supply chain and quality programs, as well as strong environmental, social, and governance (ESG) programs. Headquartered in Scottsdale, Arizona, the company's global network includes manufacturing plants, sales offices, and design centers covering all major markets.
ON Semiconductor's portfolio of discrete devices and power modules offers a full range of high-, mid-, and low-voltage power discrete devices and advanced power module solutions, including IGBTs, MOSFETs, SiC, Si/SiC hybrid modules, diodes, SiC diodes, and intelligent power modules (IPMs).
ON Semiconductor's innovative power management products provide better power factor, enhanced active-mode energy efficiency, and lower standby power consumption, resulting in energy-efficient solutions for a wide range of applications. ON Semiconductor signal conditioning and control products include amplifiers, comparators, transfer drivers, microcontrollers, data converters (ADCs), and digital potentiometers (POTs). More details: ON Semiconductor.
Onsemi has a responsive, reliable supply chain and quality programs, as well as strong environmental, social, and governance (ESG) programs. Headquartered in Scottsdale, Arizona, the company's global network includes manufacturing plants, sales offices, and design centers covering all major markets.
ON Semiconductor's portfolio of discrete devices and power modules offers a full range of high-, mid-, and low-voltage power discrete devices and advanced power module solutions, including IGBTs, MOSFETs, SiC, Si/SiC hybrid modules, diodes, SiC diodes, and intelligent power modules (IPMs).
ON Semiconductor's innovative power management products provide better power factor, enhanced active-mode energy efficiency, and lower standby power consumption, resulting in energy-efficient solutions for a wide range of applications. ON Semiconductor signal conditioning and control products include amplifiers, comparators, transfer drivers, microcontrollers, data converters (ADCs), and digital potentiometers (POTs). More details: ON Semiconductor.
DC Switching Regulators UC3842BNG’s Price
In-Stock: 2,101
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Quantity | Unit price | Total price |
|---|---|---|
1 | $1.7 | $1.7 |
10 | $1.0 | $10 |
50 | $0.7 | $35 |
100 | $0.6 | $60 |
250 | $ 0.58 | $145 |
500 | $0.55 | $275 |
1,000 | $0.53 | $530 |
2,500 | $0.5 | $1250 |
5,000 | $0.48 | $2400 |