ST UC3842BD1013TR
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Brands: STMicroelectronics, Inc
Mfr.Part #: UC3842BD1013TR
Datasheet: UC3842BD1013TR Datasheet (PDF)
Package/Case: SO-8
RoHS Status:
Stock Condition: 3719 pcs, New Original
Product Type: Power Management ICs
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*All prices are in USD
Qty | Unit Price | Ext Price |
---|---|---|
5 | $0.246 | $1.230 |
50 | $0.214 | $10.700 |
150 | $0.200 | $30.000 |
500 | $0.183 | $91.500 |
2500 | $0.175 | $437.500 |
5000 | $0.170 | $850.000 |
In Stock:3719 PCS
UC3842BD1013TR 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, Forward |
Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
Duty Cycle - Max: | 100 % | 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: | UC3842B | 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 | UC3842BD1, UC3842BD, UC3842B, UC3842, 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 | |
---|---|---|---|
DHL | $20.00-$40.00 (0.50 KG) | 2-5 days | |
Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days | |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 days | |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 days | |
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. | |
Paypal | charge 4.0% service fee. | |
Credit Card | charge 3.5% service fee. | |
Western Union | charge US.00 banking fee. | |
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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Step3 :Anti-static bag
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Step4 :Individual packaging
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Step5 :Packaging boxes
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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 UC3842BD1013TR is a voltage mode PWM controller used in power supply applications. It features a fixed frequency oscillator, under voltage lockout, voltage reference, high current totem pole output, and variable duty cycle operation. The chip is commonly used in switch-mode power supplies and battery chargers for efficient voltage regulation.
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Equivalent
Equivalent products of UC3842BD1013TR chip include UC3842B, UC3842A, UC3843BD1013TR, and UC3843A. These chips are all part of the UC384x family of voltage mode PWM controllers commonly used in power supply and lighting applications. -
Features
The UC3842BD1013TR is a high-performance current-mode PWM controller IC with features such as a precision reference voltage, oscillator frequency up to 500kHz, adjustable dead-time control, and overcurrent protection. It is designed for use in switched-mode power supply (SMPS) applications. -
Pinout
The UC3842BD1013TR is a Pulse Width Modulation (PWM) controller with a pin count of 8. The functions of the pins are: 1. Compensation 2. Output 3. Ground 4. Voltage feedback 5. Current sense 6. Reference voltage 7. Overcurrent protection 8. Power supply. -
Manufacturer
The manufacturer of the UC3842BD1013TR is STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, manufactures, and markets a wide range of products in various application areas, including automotive, industrial, consumer, and communications markets. They are known for their expertise in digital, analog, and mixed-signal IC technologies. -
Application Field
The UC3842BD1013TR is commonly used in applications such as power supplies, battery chargers, LED drivers, and DC-DC converters. It is ideal for applications that require high efficiency, precise voltage regulation, and low power dissipation. -
Package
The UC3842BD1013TR chip is in a surface mount package, specifically in a SOIC-8 form. It has a size of 4.9mm x 3.9mm x 1.75mm.
Datasheet PDF
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