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UC3844BD1R2G
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Brands: onsemi
Mfr.Part #: UC3844BD1R2G
Datasheet: UC3844BD1R2G Datasheet (PDF)
Package/Case: 8-SOIC(0.154",3.90mmWidth)
RoHS Status:
Stock Condition: 7532 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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*All prices are in USD
| Qty | Unit Price | Ext Price |
|---|---|---|
| 1 | $0.508 | $0.508 |
| 10 | $0.423 | $4.230 |
| 30 | $0.381 | $11.430 |
| 100 | $0.340 | $34.000 |
| 500 | $0.286 | $143.000 |
| 1000 | $0.275 | $275.000 |
In Stock:7532 PCS
UC3844BD1R2G General Description
The UC3844B, UC3845B 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 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 (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 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
- 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
- Pb-Free Packages are Available
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product Status | Active | Output Type | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down | Output Configuration | Positive, Isolation Capable |
| Topology | Boost, Flyback | Number of Outputs | 1 |
| Output Phases | 1 | Voltage - Supply (Vcc/Vdd) | 10V ~ 36V |
| Frequency - Switching | Up to 500kHz | Duty Cycle (Max) | 48% |
| Synchronous Rectifier | No | Clock Sync | No |
| Control Features | Frequency Control | Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 8-SOIC |
Shipping
| Shipping Type | Ship Fee | Lead Time | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
 |
REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time：Shipping fee depend on different zone and country.
Payment
| Terms of payment | Hand Fee | |
|---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.0% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
Packing
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All the products will packing in anti-staticbag. Ship with ESD antistatic protection.
Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.
We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.
After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.
Part points
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The UC3844BD1R2G chip is a high-performance current-mode controller used in switch-mode power supplies. It provides stable voltage regulation and precise control for various power applications. The chip operates at a fixed frequency and includes features like soft-start, pulse-by-pulse current limiting, and frequency foldback. Its compact design and wide operating range make it suitable for a range of power supply designs.
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Equivalent
The equivalent products of the UC3844BD1R2G chip are UC3844BN, UC3844BNR2, UC3844BNR2G, UC3844BNG, UC3844BQNG, UC3844BVNG, UC3844BVNR2G, UC3844BNR2G, and UC3844. -
Features
The UC3844BD1R2G is a high-performance, fixed-frequency current-mode controller. It features an integrated circuit for generating adjustable PWM using a temperature-compensated voltage reference, programmable soft-start, and protection against overcurrent and undervoltage conditions. It is designed for use in offline and DC-to-DC converters. -
Pinout
The UC3844BD1R2G is a current-mode PWM controller with a pin count of 8. Its functions include generating adjustable duty cycle pulses to control power semiconductors, providing precise current-limiting, and offering protection features for various applications like offline and DC/DC converters. -
Manufacturer
The manufacturer of the UC3844BD1R2G is ON Semiconductor. It is a semiconductor manufacturing company that specializes in power management technologies, discrete devices, and custom solutions for various industries. -
Application Field
The UC3844BD1R2G is a pulse width modulation (PWM) controller used in power supply applications. It is commonly used in voltage regulators, battery chargers, and LED drivers. It provides precise control of the power output, high efficiency, and protection features, making it suitable for a wide range of power supply applications. -
Package
The UC3844BD1R2G chip is available in a SOIC-8 package, which stands for Small Outline Integrated Circuit. The chip has a form factor of a compact rectangular shape with 8 pins and measures approximately 3.9mm x 4.9mm in size.
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