DatasheetsPDF.com

LM5021 Datasheet

Part Number LM5021
Manufacturers National Semiconductor
Logo National Semiconductor
Description AC-DC Current Mode PWM Controller
Datasheet LM5021 DatasheetLM5021 Datasheet (PDF)

May 2005 www.DataSheet4U.com LM5021 AC-DC Current Mode PWM Controller LM5021 AC-DC Current Mode PWM Controller General Description The LM5021 off-line pulse width modulation (PWM) controller contains all of the features needed to implement highly efficient off-line single-ended flyback and forward power converters using current-mode control. The LM5021 features include an ultra-low (25 µA) start-up current, which minimizes power losses in the high voltage start-up network. A skip cycle mode re.

  LM5021   LM5021






Part Number LM5021
Manufacturers Texas Instruments
Logo Texas Instruments
Description PWM Controller
Datasheet LM5021 DatasheetLM5021 Datasheet (PDF)

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM5021 SNVS359E – MAY 2005 – REVISED DECEMBER 2014 LM5021 AC-DC Current-Mode PWM Controller 1 Features •1 Ultra-low Startup Current (25 µA Maximum) • Current Mode Control • Skip Cycle Mode for Low Standby Power • Single Resistor Programmable Oscillator • Synchronizable Oscillator • Adjustable Soft-Start • Integrated 0.7-A Peak Gate Driver • Direct Opto-Coupler Interface • Maximum Duty Cycle Limiting (80% f.

  LM5021   LM5021







AC-DC Current Mode PWM Controller

May 2005 www.DataSheet4U.com LM5021 AC-DC Current Mode PWM Controller LM5021 AC-DC Current Mode PWM Controller General Description The LM5021 off-line pulse width modulation (PWM) controller contains all of the features needed to implement highly efficient off-line single-ended flyback and forward power converters using current-mode control. The LM5021 features include an ultra-low (25 µA) start-up current, which minimizes power losses in the high voltage start-up network. A skip cycle mode reduces power consumption with light loads for energy conserving applications (ENERGY STAR ® , CECP, etc.). Additional features include under-voltage lockout, cycle-by-cycle current limit, hiccup mode overload protection, slope compensation, soft-start and oscillator synchronization capability. This high performance 8-pin IC has total propagation delays less than 100nS and a 1MHz capable oscillator that is programmed with a single resistor. Features n n n n n n n n n n n n n n n Ultra Low Start-up Current (25 µA maximum) Current Mode Control Skip Cycle Mode for Low Standby Power Single Resistor Programmable Oscillator Synchronizable Oscillator Adjustable Soft-start Integrated 0.7A Peak Gate Driver Direct Opto-Coupler Interface Maximum Duty Cycle Limiting (80% for LM5021-1 or 50% for LM5021-2) Slope Compensation for (LM5021-1 Only) Under Voltage Lockout (UVLO) with Hysteresis Cycle-by-Cycle Over-Current Protection Hiccup Mode for Continuous Overload Protection Leading Edge Blanking of Cu.


2010-04-25 : T1A6C    SCM69C433    MCM69C433    I2000RW    STD01N    STD01P    STD02N    STD02P    STD03205    STD03505   


@ 2014 :: Datasheetspdf.com ::
Semiconductors datasheet search & download site (Privacy Policy & Contact)