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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
Marcas: STMicroelectronics, Inc
Parte do fabricante #: UC3844BD1013TR
Ficha de dados: UC3844BD1013TR Datasheet (PDF)
Pacote/Caso: SO-8
Status RoHS:
Condição de estoque: 3213 peças, novo original
Tipo de Produto: CIs de gerenciamento de energia
Warranty: 1 Year Ovaga Warranty - Find Out More
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1
*Todos os preços estão em USD
| Quantidade | Preço unitário | Preço Externo |
|---|---|---|
| 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 Descrição geral
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.
Características
- 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
Especificações
| Parâmetro | Valor | Parâmetro | Valor |
|---|---|---|---|
| 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 |
Envio
| Tipo de envio | Taxa de envio | Tempo de espera | |
|---|---|---|---|
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 dias |
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FedEx | $20.00-$40.00 (0.50 KG) | 2-5 dias |
 |
UPS | $20.00-$40.00 (0.50 KG) | 2-5 dias |
 |
TNT | $20.00-$40.00 (0.50 KG) | 2-5 dias |
 |
EMS | $20.00-$40.00 (0.50 KG) | 2-5 dias |
 |
CORREIO AÉREO REGISTADO | $20.00-$40.00 (0.50 KG) | 2-5 dias |
Tempo de processamento: A taxa de envio depende de diferentes zonas e países.
Pagamento
| Termos de pagamento | Taxa de mão | |
|---|---|---|
 |
Transferência bancária | cobrar taxa bancária de US$ 30,00. |
 |
PayPal | cobrar taxa de serviço de 4,0%. |
 |
Cartão de crédito | cobrar taxa de serviço de 3,5%. |
 |
Western Union | charge US.00 banking fee. |
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Grama de dinheiro | cobrar taxa bancária de US$ 0,00. |
Garantias
1.Os componentes eletrônicos que você compra incluem garantia de 365 dias, garantimos a qualidade do produto.
2. se alguns dos itens que você recebeu não forem de qualidade perfeita, providenciaremos seu reembolso ou substituição com responsabilidade. Mas os itens devem permanecer em sua condição original.
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Todos os produtos serão embalados em saco antiestático. Envio com proteção antiestática ESD.
Fora da etiqueta da embalagem ESD serão utilizadas as informações da nossa empresa: Número da peça, marca e quantidade.
Iremos inspecionar todas as mercadorias antes do envio, garantir que todos os produtos estejam em boas condições e garantir que as peças sejam novas folhas de dados originais.
Depois que todas as mercadorias forem garantidas sem problemas na pós-embalagem, embalaremos com segurança e enviaremos por expresso global. Apresenta excelente resistência a perfurações e rasgos, além de boa integridade de vedação.
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.
Ficha de dados PDF
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