 |
Os motores de busca de Datasheet de Componentes eletrônicos |
|
|
Os motores de busca de Datasheet de Componentes eletrônicos |
|
FAN400A Folha de dados(PDF) 1 Page - Fairchild Semiconductor |
|
||||||||||||||||||||||||||||||
FAN400A Folha de dados(HTML) 1 Page - Fairchild Semiconductor |
|
|
1 / 15 page  October 2008 © 2008 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN400A Rev. 1.0.2 FAN400A — Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback Features Linearly Decreasing PWM Frequency Green Mode Under Light-Load and Zero-Load Conditions Constant Voltage (CV) and Constant Current (CC) No Secondary Feedback Low Startup Current: 8μA Low Operating Current: 3.6mA Leading-Edge Blanking Constant Power Limit Universal AC Input Range Synchronized Slope Compensation 140 °C OTP Sensor with Hysteresis VDD Over-Voltage Clamping Cycle-by-Cycle Current Limiting Under-Voltage Lockout (UVLO) Fixed PWM Frequency with Hopping Gate Output Maximum Voltage Clamped at 17V Small SSOT-6 Package Applications General-purpose, switching mode, power supplies and flyback power converters, such as: Battery Chargers for Cellular Phones, Cordless Phones, PDAs, Digital Cameras, Power Tools Power Adapters for Ink Jet Printers, Video Game Consoles, Portable Audio Players Open-Frame SMPS for TV/DVD Standby and Auxiliary Supplies, Home Appliances, Consumer Electronics Replacement for Linear Transformers and RCC SMPS PC 5V Standby Power Description This highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. To minimize standby power consumption, a proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load and zero-load conditions. This green mode enables the power supply to meet international power conservation requirements. The supply voltage VDD is also used for feedback compensation, to regulate the output voltage without requiring a conventional TL431 and a photo-coupler. Another advantage of the FAN400A is that the typical startup current is only 8μA, while the typical operating current can be as low as 3.6mA. A large startup resistance can be used to achieve even higher power conversion efficiency. FAN400A integrates a frequency hopping function internally to reduce EMI emissions with minimum line filters. Built-in synchronized slope compensation maintains the stability of peak current-mode control. Proprietary internal compensation ensures constant output power limiting over a universal range of AC input voltages, from 90VAC to 264VAC. The FAN400A provides many protection functions. Pulse-by-pulse current limiting ensures constant output current, even if a short circuit occurs. The internal protection circuit disables PWM output if VDD exceeds 22.7V. The gate output is clamped at 17V to protect the power MOS from over-voltage damage. The built-in over-temperature protection (OTP) function shuts down the controller at 140 °C with a 30°C hysteresis. The FAN400A is designed to provide a low-cost total solution for flyback converters. It is available in a small- footprint, 6-pin, SSOT-6 package. Related Resources AN-400A Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback Ordering Information Part Number Operating Temperature Range Package Eco Status Packing Method FAN400ATY -40 °C to +105°C SSOT-6 Green Tape & Reel FAN400ANY -40 °C to +105°C DIP-8 Green Tube For Fairchild’s definition of “green” please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. |
Nº de peça semelhante - FAN400A_2 |
|
Descrição semelhante - FAN400A_2 |
|
|
|
Ligação URL |
| Privacy Policy |
| ALLDATASHEETPT.COM |
| ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Portuguese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
