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주문 금액이
$5000
ST UC3845B
onsemi ANA SMPS PWM CONTROLLER
제조업체부품 #: UC3845B
데이터 시트: UC3845B 데이터 시트 (PDF)
패키지/케이스: SOP-8
RoHS 상태:
재고상태: 3,533 PC, 새로운 원본
상품 유형: DC DC Switching Controllers
Warranty: 1 Year Ovaga Warranty - Find Out More
0
1
*모든 가격은 USD 단위입니다.
| 수량 | 단가 | 추가 가격 |
|---|---|---|
| 5 | $0.186 | $0.930 |
| 50 | $0.153 | $7.650 |
| 150 | $0.139 | $20.850 |
| 500 | $0.120 | $60.000 |
| 2500 | $0.094 | $235.000 |
| 5000 | $0.089 | $445.000 |
재고: 3,533 PCS
UC3845B 일반적인 설명
The UC3845B is a PWM (Pulse-Width Modulation) controller IC, part of the UCx84x family, manufactured by Texas Instruments. It is a versatile PWM controller commonly used in power supply and voltage regulation applications. The UC3845B is designed to provide precise control over the duty cycle and frequency of the output waveform.
특징
Voltage Mode PWM Control: UC3845B operates as a voltage mode PWM controller, regulating the output voltage by adjusting the duty cycle of the output waveform based on input voltage and load conditions.
Adjustable Frequency and Duty Cycle: This IC allows users to adjust both the switching frequency and duty cycle, offering flexibility to optimize the performance of the power supply.
Current Limiting: UC3845B typically includes current limiting features to protect the power supply against overcurrent conditions.
Soft Start: Some versions of the IC may have a soft start function, which gradually ramps up the output voltage during startup to prevent excessive inrush current.
Error Amplifier: The error amplifier within UC3845B compares a feedback voltage (representing the actual output voltage) to a reference voltage, generating an error signal for control.
Under-Voltage Lockout (UVLO): It often includes UVLO circuitry to ensure that the power supply starts and operates only within a specified input voltage range.
Short-Circuit Protection: Some versions may have built-in short-circuit protection to safeguard the power supply from short circuits.
Wide Input Voltage Range: UC3845B is typically capable of operating within a wide input voltage range, making it suitable for various applications.
External Components: To configure UC3845B for a specific application, external components such as resistors, capacitors, and an external power transistor are typically required.
애플리케이션
The UC3845B is used in a broad range of applications, including DC-DC converters, AC-DC power supplies, battery chargers, and other power management and voltage regulation applications.
명세서
| 매개변수 | 값 | 매개변수 | 값 |
|---|---|---|---|
| Product Name | UC3845B | Product Type | Voltage Mode PWM Controller |
| Manufacturer | Various Manufacturers | Number of Channels | 1 |
| Supply Voltage | 7V to 40V | Operating Frequency | Adjustable, typically in the range of 50 kHz to 500 kHz |
| Operating Temperature | 0°C to +70°C | Package / Case | Various packages, including SOIC, PDIP, and more |
| Packaging | Various packaging options | Source Content uid | UC3845B |
| Pbfree Code | Yes | Rohs Code | Yes |
| Part Life Cycle Code | Active | Ihs Manufacturer | STMICROELECTRONICS |
| Part Package Code | DIP | Package Description | PLASTIC, DIP-14 |
| Pin Count | 14 | Reach Compliance Code | compliant |
| ECCN Code | EAR99 | HTS Code | 8542.39.00.01 |
| Analog IC - Other Type | SWITCHING CONTROLLER | Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION | Input Voltage-Max | 25 V |
| Input Voltage-Min | 12 V | Input Voltage-Nom | 15 V |
| JESD-30 Code | R-PDIP-T14 | Number of Functions | 1 |
| Number of Terminals | 14 | Operating Temperature-Max | 70 °C |
| Operating Temperature-Min | Output Current-Max | 1 A | |
| Package Body Material | PLASTIC/EPOXY | Package Code | DIP |
| Package Equivalence Code | DIP14,.3 | Package Shape | RECTANGULAR |
| Package Style | IN-LINE | Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Qualification Status | Not Qualified | Seated Height-Max | 5.1 mm |
| Surface Mount | NO | Switcher Configuration | SINGLE |
| Switching Frequency-Max | 500 kHz | Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL | Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm | Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
배송
| 배송 유형 | 배송비 | 리드타임 | |
|---|---|---|---|
 |
DHL | $20.00-$40.00 (0.50 KG) | 2-5 날 |
 |
페덱스 | $20.00-$40.00 (0.50 KG) | 2-5 날 |
 |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 날 |
 |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 날 |
 |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 날 |
 |
등기 항공 우편 | $20.00-$40.00 (0.50 KG) | 2-5 날 |
처리 시간: 배송비는 지역 및 국가에 따라 다릅니다.
지불
| 지불 조건 | 핸드 수수료 | |
|---|---|---|
 |
은행 송금 | US$30.00의 은행 수수료를 부과합니다. |
 |
페이팔 | 4.0%의 서비스 수수료를 부과합니다. |
 |
신용 카드 | 3.5% 서비스 수수료를 부과합니다. |
 |
웨스턴 유니언 | charge US.00 banking fee. |
 |
돈 그램 | US$0.00의 은행 수수료를 부과합니다. |
보증
1. 귀하가 구입한 전자 부품에는 365일 보증이 포함되어 있으며, 우리는 제품 품질을 보장합니다.
2. 귀하가 받은 품목 중 일부가 완벽한 품질이 아닌 경우, 당사는 책임 있게 귀하의 환불 또는 교체를 준비할 것입니다. 그러나 품목은 원래 상태를 유지해야 합니다.
포장
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![제품]( "제품")
단계1 :제품
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단계2 :진공 포장
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![정전기 방지 가방]( "정전기 방지 가방")
단계3 :정전기 방지 가방
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단계4 :개별 포장
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단계5 :포장 상자
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![바코드 배송 태그]( "바코드 배송 태그")
단계6 :바코드 배송 태그
모든 제품은 정전기 방지 가방에 포장됩니다. ESD 정전기 방지 보호 장치와 함께 배송됩니다.
외부 ESD 포장 라벨은 당사 정보(부품 번호, 브랜드 및 수량)를 사용합니다.
우리는 선적 전에 모든 상품을 검사하고, 모든 제품이 양호한 상태인지 확인하고, 부품이 새로운 원본 일치 데이터시트인지 확인합니다.
모든 상품을 포장한 후 문제가 없는지 확인한 후 안전하게 포장하여 글로벌 특급으로 보내드립니다. 우수한 밀봉 무결성과 함께 탁월한 천공 및 인열 저항성을 나타냅니다.
부품 포인트
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The UC3845B chip is a pulse width modulation (pwm) controller commonly used in switching power supplies. it is designed to regulate the output voltage by adjusting the duty cycle of the switching transistor. the chip provides various protection features, such as overcurrent and overvoltage protection. it is versatile and widely used in applications requiring efficient power conversion.
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Equivalent
Some equivalent products of the UC3845B chip, a pwm controller, include tl3844b, uc3844b, and sg3844b, which are also pwm controllers with similar functionality. other alternatives may vary based on specific requirements and application needs. -
Features
The main features of the UC3845B integrated circuit include a voltage reference, high-current totem-pole output stage, oscillator, temperature-compensated reference, precision current sources, error amplifier, and an active current limiting circuitry for fault protection. -
Pinout
The UC3845B is a pulse width modulation (pwm) controller ic. it has 16 pins and the main functions are to regulate the output voltage of a power supply and control the switching of power transistors. -
Manufacturer
UC3845B is a product of texas instruments (ti), an american semiconductor company. ti specializes in designing and manufacturing integrated circuits, which are widely used in various electronic devices. they offer a range of products for different applications, including power management, amplifiers, microcontrollers, and more. -
Application Field
The UC3845B is a pwm controller ic designed for applications in power supplies, motor control, and lighting systems. it is commonly used in offline flyback converters, resonant converters, and forward converters. its features such as adjustable frequency and duty cycle control make it suitable for various power management applications. -
Package
The UC3845B chip is available in a pdip-8 package type, which stands for plastic dual-in-line package with 8 pins. its form is dip (dual in-line package). the package size can vary, but for the pdip-8, the overall size is approximately 10.16mm x 6.35mm.
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최소 주문 수량은 1개부터입니다.
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최저 국제 배송비는 $0.00부터 시작됩니다
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모든 제품에 대해 365일 품질 보증
