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LP2988AIMM-2.5 ,Micropower, 200 mA Ultra Low-Dropout Low Noise Voltage Regulator with Programmable Power-On Reset DelayApplicationsError Flag/Reset: The error flag goes low when the outputn Cellular Phonedrops approxim ..
LP2988AIMM-2.8 ,Micropower, 200 mA Ultra Low-Dropout Low Noise Voltage Regulator with Programmable Power-On Reset DelayApplicationsError Flag/Reset: The error flag goes low when the outputn Cellular Phonedrops approxim ..
LP2988AIMM-2.8 ,Micropower, 200 mA Ultra Low-Dropout Low Noise Voltage Regulator with Programmable Power-On Reset DelayApplicationsError Flag/Reset: The error flag goes low when the outputn Cellular Phonedrops approxim ..
LM5025SD/NOPB
Active Clamp Voltage Mode PWM Controller
LM5025UVLO
COMP
OUT_A
OUT_B
VCC
RAMP
CS1
VIN
VIN
35 - 78V
3.3V
ERROR
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LM5025SNVS265C –DECEMBER 2003–REVISED JANUARY 2016
LM5025 Active Clamp Voltage Mode PWM Controller Features 3 DescriptionThe LM5025 PWM controller contains all of the Internal Start-Up Bias Regulator features necessaryto implement power converters• 3-A Compound Main Gate Driver using the active clamp and reset technique. The• Programmable Line Undervoltage Lockout (UVLO) device canbe configuredto control eithera
With Adjustable Hysteresis P-channel clamp switch N-channel clamp
switch. With the active technique, higher• Voltage Mode Control With Feed-Forward efficiencies and greater densities can be• Adjustable Dual-Mode Overcurrent Protection realized comparedto catch windingor• Programmable Overlapor Deadtime Between the RDC clamp and resetMain and Active Clamp Outputs Two control outputs the main power• Volt× Second Clamp switch control (OUT_A), clamp switch• Programmable Soft-Start control (OUT_B). The output can be
configured for eithera time• Leading Edge Blanking
(for P-channel switch ora specified• Single Resistor Programmable Oscillator deadtime (for N_channel The two• Oscillator UP and DOWN Sync Capability internal compound gate both MOS Precision 5-V Reference• Thermal Shutdown
2 Applications Server Power Supplies• 48-V Telecom Power Supplies 42-V Automotive Applications• High-Efficiency DC-to-DC Power Supplies
Simplified Schematic
