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ST UC3844BD1013TR
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Brands: STMicroelectronics, Inc
Mfr.Part #: UC3844BD1013TR
Datasheet: UC3844BD1013TR Datasheet (PDF)
Package/Case: SO-8
RoHS Status:
Stock Condition: 3213 pcs, New Original
Product Type: Power Management ICs
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*All prices are in USD
| Qty | Unit Price | Ext Price |
|---|---|---|
| 1 | $0.411 | $0.411 |
| 10 | $0.328 | $3.280 |
| 30 | $0.294 | $8.820 |
| 100 | $0.249 | $24.900 |
| 500 | $0.226 | $113.000 |
| 1000 | $0.215 | $215.000 |
In Stock:3213 PCS
UC3844BD1013TR General Description
The UC284xB family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state.Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC2842B and UC2844B have UVLO thresholds of 16V (on) and 10V (off), ideally suited off-line applications The corresponding thresholds for the UC2843B and UC2845B are 8.5V and 7.9V. The UC2842B and UC2843B can operate to duty cycles approaching 100%. A range of the zero to < 50 % is obtained by the UC2844B and UC2845B by the addition of an internal toggle flip flop which blanks the output off every other clock cycle.
Features
- LOW START-UP AND OPERATING CURRENT
- UNDERVOLTAGE LOCKOUT WITH HYSTERESIS
- INTERNALLY TRIMMED REFERENCE WITH UNDERVOLTAGE LOCKOUT
- CURRENT LIMITING
- TRIMMED OSCILLATOR FOR PRECISE FREQUENCY CONTROL
- CURRENT MODE OPERATION TO 500kHz
- OSCILLATOR FREQUENCY GUARANTEED AT 250kHz
- LATCHING PWM FOR CYCLE-BY-CYCLE
- HIGH CURRENT TOTEM POLE OUTPUT
- AUTOMATIC FEED FORWARD COMPENSATION
Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer: | STMicroelectronics | Product Category: | Switching Controllers |
| RoHS: | Y | Topology: | Boost, Flyback |
| Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
| Duty Cycle - Max: | 50 % | Output Voltage: | 4.90 V to 5.10 V |
| Output Current: | 1000 mA | Minimum Operating Temperature: | - 40 C |
| Maximum Operating Temperature: | + 150 C | Mounting Style: | SMD/SMT |
| Package / Case: | SO-8 | Packaging: | Reel |
| Series: | UC3844B | Type: | Current Mode PWM Controllers |
| Brand: | STMicroelectronics | Fall Time: | 50 ns |
| Operating Supply Voltage: | 30 V | Product Type: | Switching Controllers |
| Rise Time: | 50 ns | Factory Pack Quantity: | 2500 |
| Subcategory: | PMIC - Power Management ICs | Unit Weight: | 0.017870 oz |
| Tags | UC3844BD101, UC3844BD10, UC3844BD1, UC3844BD, UC3844B, UC3844, UC384, UC38, UC3 | feature-type | Current Mode PWM Controller |
| feature-maximum-power-dissipation-mw | 1250 | feature-packaging | Tape and Reel |
| feature-rad-hard | feature-pin-count | 8 | |
| feature-supplier-package | SO N | feature-standard-package-name1 | SO |
| feature-cecc-qualified | No | feature-esd-protection | |
| feature-escc-qualified | feature-military | No | |
| feature-aec-qualified | No | feature-aec-qualified-number | |
| feature-auto-motive | No | feature-p-pap | No |
| feature-eccn-code | EAR99 | feature-svhc | No |
| feature-svhc-exceeds-threshold | No |
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 | |
|---|---|---|
 |
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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Step1 :Product
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Step2 :Vacuum packaging
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Step3 :Anti-static bag
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Step4 :Individual packaging
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Step5 :Packaging boxes
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Step6 :bar-code shipping tag
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 UC3844BD1013TR chip is a pulse width modulation (PWM) controller commonly used in switch-mode power supply (SMPS) applications. It provides precise control over the output voltage and current by modulating the duty cycle of the switching transistor. The chip includes features like overvoltage protection, soft start, and current limiting, making it suitable for various power management applications.
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Equivalent
Some equivalent products of the UC3844BD1013TR chip include the UC3844BN, UC3844BNG, UC3844BD1R2G, and UC3844BD1R2G. These chips are similar in function and can be used interchangeably in many applications. -
Features
The UC3844BD1013TR is a pulse-width modulation (PWM) controller IC. It features a 1A peak output current, precise voltage reference, high-frequency operation, programmable soft-start, pulse-by-pulse current limiting, protection against feedback loop disconnection, and an open collector output transistor for driving power MOSFETs. -
Pinout
The UC3844BD1013TR is an IC (integrated circuit) with a 14-pin count. It is commonly used as a current-mode PWM controller in switch-mode power supplies. Its functions include regulating the output voltage, providing accurate feedback control, and protecting against overvoltages and overcurrents. -
Manufacturer
The manufacturer of the UC3844BD1013TR is Texas Instruments. Texas Instruments is a multinational semiconductor company that specializes in designing and manufacturing integrated circuits and other electronic components. -
Application Field
The UC3844BD1013TR is a voltage-mode PWM controller that is commonly used in various applications such as switched-mode power supplies (SMPS), battery chargers, and LED drivers. It provides control over the duty cycle of the PWM signal, making it suitable for applications requiring precise output voltage or current regulation. -
Package
The UC3844BD1013TR chip comes in a SOIC-8 package type, with a body size of 3.9mm x 4.9mm and a lead form of gull-wing.
Datasheet PDF
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