ChongMing Group (HK) Int'l Co., Ltd
| Payment Terms | T/T, Western Union ,paypal |
| Supply Ability | 10000PCS |
| Delivery Time | in stock 2-3days |
| Packaging Details | 2500/REEL |
| Description | Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC |
| Total Power Supply and Zener Current | 30mA |
| Output Current, Source or Sink (Note 1) | 1.0A |
| Output Energy (Capacitive Load per Cycle) | 5.0UJ |
| Current Sense and Voltage Feedback Inputs | − 0.3 to + 5.5 V |
| Voltage - Supply (Vcc/Vdd) | 7.6 V ~ 30 V |
| Frequency - Switching | 500kHz |
| Brand Name | ON |
| Model Number | UC3845BD1R2G |
| Place of Origin | CHINA |
| Certification | CE/ RoHS |
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Product Specification
| Payment Terms | T/T, Western Union ,paypal | Supply Ability | 10000PCS |
| Delivery Time | in stock 2-3days | Packaging Details | 2500/REEL |
| Description | Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC | Total Power Supply and Zener Current | 30mA |
| Output Current, Source or Sink (Note 1) | 1.0A | Output Energy (Capacitive Load per Cycle) | 5.0UJ |
| Current Sense and Voltage Feedback Inputs | − 0.3 to + 5.5 V | Voltage - Supply (Vcc/Vdd) | 7.6 V ~ 30 V |
| Frequency - Switching | 500kHz | Brand Name | ON |
| Model Number | UC3845BD1R2G | Place of Origin | CHINA |
| Certification | CE/ RoHS | ||
| High Light | digital to analog audio converter ，ic smart card reader | ||
UC3845BD1R2G ON IC Integrated Circuit CHIP High Performance Current Mode Controllers
High Performance Current Mode Controllers
The UC3844B, UC3845B 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 an oscillator, 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, a latch for single pulse metering, and a flip−flop which blanks the output off every other oscillator cycle, allowing output deadtimes to be programmed from 50% to 70%.
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 UCX844B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX845B is tailored for lower voltage applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).
Features
• Pb−Free Packages are Available
• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz Output Switching Frequency
• Output Deadtime Adjustable from 50% to 70%
• 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
| Product Attributes | Select All |
| Manufacturer | ON Semiconductor |
| Series | - |
| Packaging | Tape & Reel (TR) |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive or Negative, Isolation Capable |
| Topology | Boost, Flyback |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 7.6 V ~ 30 V |
| Frequency - Switching | 500kHz |
| Duty Cycle (Max) | 0.48 |
| Synchronous Rectifier | No |
| Clock Sync | No |
| Serial Interfaces | - |
| Control Features | Frequency Control |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
| Base Part Number | UC384*B |
Company Details
Business Type:
Distributor/Wholesaler
Year Established:
2008
Total Annual:
5000000-7000000
Employee Number:
80~100
Ecer Certification：
Active Member
CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electron... CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electron...
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