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ST UC2845BD1013TR
Boost, Flyback Regulator Positive, Isolation Capable Output Step-Up, Step-Up/Step-Down DC-DC Controller IC 8-SOIC
Brands: STMicroelectronics, Inc
Mfr.Part #: UC2845BD1013TR
Datasheet: UC2845BD1013TR Datasheet (PDF)
Package/Case: SO-8
RoHS Status:
Stock Condition: 3445 pcs, New Original
Product Type: Power Management ICs
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*All prices are in USD
| Qty | Unit Price | Ext Price |
|---|---|---|
| 1 | $0.771 | $0.771 |
| 10 | $0.644 | $6.440 |
| 30 | $0.581 | $17.430 |
| 100 | $0.517 | $51.700 |
| 500 | $0.430 | $215.000 |
| 1000 | $0.411 | $411.000 |
In Stock:3445 PCS
UC2845BD1013TR 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: | Details | Topology: | Boost, Flyback, Forward |
| Number of Outputs: | 1 Output | Switching Frequency: | 500 kHz |
| Duty Cycle - Max: | 50 % | Input Voltage: | 30 V |
| Output Voltage: | 4.95 V to 5.05 V | Output Current: | 1 A |
| Minimum Operating Temperature: | - 40 C | Maximum Operating Temperature: | + 150 C |
| Mounting Style: | SMD/SMT | Package / Case: | SOIC-8 |
| Packaging: | MouseReel | Brand: | STMicroelectronics |
| Fall Time: | 50 ns | Operating Supply Voltage: | 30 V |
| Product Type: | Switching Controllers | Rise Time: | 50 ns |
| Series: | UC2845B | Factory Pack Quantity: | 2500 |
| Subcategory: | PMIC - Power Management ICs | Type: | Current Mode PWM Controllers |
| Unit Weight: | 0.017870 oz |
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 |
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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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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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UC2845BD1013TR is a pulse width modulation (PWM) controller chip used in various power supply applications. It regulates the output voltage by adjusting the width of the pulses delivered to the power switch. This chip offers improved features such as precise duty cycle control, adjustable frequency, and current limiting. It is commonly used in switch-mode power supplies, battery chargers, and LED drivers.
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Equivalent
Some equivalent products of the UC2845BD1013TR chip include the UC2845BDG, UC3845BD1R2G, SG6845SZ, MC34060AD, and IRS2845D. -
Features
The features of UC2845BD1013TR include a precision reference, a totem-pole output stage, a trimmable oscillator for accurate frequency control, an error amplifier with a 2.5V internal reference, overcurrent limit, and a maximum duty cycle of 50%. It operates in the voltage range of 7.6V to 30V and is suited for switch mode power supplies. -
Pinout
The UC2845BD1013TR is a pulse width modulation (PWM) controller with a pin count of 8. The pin functions are as follows: pin 1 (E/A) is the error amplifier output; pin 2 (Ipk) is the peak current sense input; pin 3 (Vin) is the supply voltage input; pins 4 and 5 (Gnd) are ground pins; pin 6 (CS) is the current sense input; pin 7 (Out) is the output pin; pin 8 (Comp) is the compensation input. -
Manufacturer
The manufacturer of the UC2845BD1013TR is Texas Instruments. Texas Instruments is a semiconductor manufacturing company that designs, manufactures, and sells a wide range of electronics and integrated circuits. -
Application Field
The UC2845BD1013TR is a PWM (Pulse Width Modulation) controller IC used in power supply applications. It can be used in areas such as switch-mode power supplies, LED lighting, battery chargers, and motor control circuits. Its versatility and efficiency make it suitable for various power electronics applications. -
Package
The UC2845BD1013TR chip is available in a SOIC-14 package type. It has a form factor of SOP and measures approximately 8.65 mm x 3.91 mm.
Datasheet PDF
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