IC REG CTRLR FLYBACK UC2843BD1R2G
| Customization: | Available |
|---|---|
| Conductive Type: | Unipolar Integrated Circuit |
| Integration: | ULSI |
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Basic Info.
- Model NO.
- UC2843BD1R2G
- Technics
- Thin Film IC
- MFG.
- ONSEMI
- D/C
- 17+
- Package
- SOIC-8
- Quality
- Genuine New Original
- shape
- SMD
- Transport Package
- Box
- Origin
- China
- HS Code
- 8542390000
- Production Capacity
- 1000000PCS
Product Description
Description
UC2843BD1R2G: Current Mode PWM Controller 1A 8-Pin SOIC N T/R - Tape and Reel
Package: SOIC-8
Mfr. Part#: UC2843BD1R2G
Mfr.: ONSEMI
Datasheet:
(e-mail or chat us for PDF file)
ROHS Status: 
Quality: 100% Original
Warranty: 180 days
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Product Status
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Active
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Output Type
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Transistor Driver
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Function
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Step-Up, Step-Up/Step-Down
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Output Configuration
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Positive, Isolation Capable
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Topology
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Boost, Flyback
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Number of Outputs
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1
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Output Phases
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1
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Voltage - Supply (Vcc/Vdd)
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7.6V ~ 30V
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Frequency - Switching
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Up to 500kHz
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Duty Cycle (Max)
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96%
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Synchronous Rectifier
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No
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Clock Sync
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No
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Serial Interfaces
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-
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Control Features
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Frequency Control
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Operating Temperature
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-25°C ~ 85°C (TA)
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Mounting Type
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Surface Mount
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Package / Case
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8-SOIC (0.154", 3.90mm Width)
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Supplier Device Package
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8-SOIC
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Base Product Number
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UC2843
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The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off-Line and dc-to-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 (SO-8) plastic package as well as the 14-pin plastic surface mount (SO-14). The SO-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).
Key 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
- Pb-Free Packages are Available
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