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UC3845BD1013TR
Switching Controllers 0.5mA Current Mode
Brands: STMicroelectronics
Mfr.Part #: UC3845BD1013TR
Datasheet: UC3845BD1013TR Datasheet (PDF)
Package/Case: 8-SOIC(0.154",3.90mmWidth)
RoHS Status:
Stock Condition: 7741 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 |
|---|---|---|
| 5 | $0.272 | $1.360 |
| 50 | $0.218 | $10.900 |
| 150 | $0.194 | $29.100 |
| 500 | $0.165 | $82.500 |
| 2500 | $0.152 | $380.000 |
| 5000 | $0.144 | $720.000 |
In Stock:7741 PCS
UC3845BD1013TR 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 |
|---|---|---|---|
| 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) | 7.6V ~ 30V |
| Frequency - Switching | Up to 500kHz | Duty Cycle (Max) | 48% |
| Synchronous Rectifier | No | Clock Sync | No |
| Control Features | Frequency Control | Operating Temperature | -40°C ~ 150°C (TJ) |
| 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 | |
|---|---|---|---|
 |
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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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 UC3845BD1013TR is a PWM controller chip used in power supply applications. It regulates the output voltage by adjusting the duty cycle of a switching transistor. This chip is commonly utilized in DC-DC converters, battery chargers, and motor control circuits due to its reliability and efficiency.
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Equivalent
The equivalent products of UC3845BD1013TR chip are UC3845B, UC3845BD1, UC3845BD1013TR/IQ, and UC3845BD1013TRT. These chips are all part of the UC3845B family of current-mode PWM controllers with integrated high-voltage startup circuits. -
Features
1. Current mode PWM controller 2. High output switching frequency (500 kHz) 3. Programmable soft-start function 4. Integrated high voltage startup circuit 5. Error amplifier with precision reference 6. Under-voltage lockout protection 7. Over-current protection 8. Adjustable dead-time control 9. Available in SOIC-14 package. -
Pinout
UC3845BD1013TR is a Pulse Width Modulation (PWM) controller with 8 pins. It is used for controlling power supply applications in various electronic devices. The pin functions are: 1. VCC 2. FB 3. COMP 4. INV 5. RT/CT 6. GND 7. OUT 8. SYNC. -
Manufacturer
The manufacturer of UC3845BD1013TR is STMicroelectronics. It is a multinational electronics and semiconductor company headquartered in Geneva, Switzerland. STMicroelectronics is known for designing and manufacturing a wide range of products including microcontrollers, power systems, sensors, and analog integrated circuits for various industries such as automotive, industrial, and telecommunications. -
Application Field
UC3845BD1013TR is commonly used in power management applications such as offline flyback and forward converters, power factor correction, and voltage regulator modules. It is also used in applications requiring high efficiency and reliability, such as industrial power supplies, LED drivers, and battery chargers. -
Package
The UC3845BD1013TR chip is available in a SOP-8 form factor with a size of 5.85mm x 4.4mm. It is commonly housed in a surface-mount package.
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