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LM27241 Datasheet

Part Number LM27241
Manufacturers Texas Instruments
Logo Texas Instruments
Description Synchronous Buck Regulator Controller
Datasheet LM27241 DatasheetLM27241 Datasheet (PDF)

OBSOLETE LM27241 www.ti.com SNVS309 – MAY 2005 LM27241 Synchronous Buck Regulator Controller for Mobile Systems Check for Samples: LM27241 FEATURES 1 •2 Input voltage range from 5.5V to 28V • Forced-PWM or Pulse-skip modes • Lossless bottom-side FET current sensing • Adaptive duty cycle clamping • High current N-channel FET drivers • Low shutdown supply currents • Reference voltage accurate to within ±1.5% • Output voltage adjustable down to 0.6V • Power Good flag and Chip Enable • Under-vo.

  LM27241   LM27241






Part Number LM27241
Manufacturers National Semiconductor
Logo National Semiconductor
Description Synchronous Buck Regulator Controller
Datasheet LM27241 DatasheetLM27241 Datasheet (PDF)

LM27241 Synchronous Buck Regulator Controller for Mobile Systems May 2005 LM27241 Synchronous Buck Regulator Controller for Mobile Systems General Description The LM27241 is an adjustable 200kHz-500kHz single channel voltage-mode controlled high-speed synchronous buck regulator controller. It is ideally suited for battery powered applications such as laptop and notebook computers. The LM27241 requires only N-channel FETs for both the upper and lower positions of the synchronous stage. It fe.

  LM27241   LM27241







Synchronous Buck Regulator Controller

OBSOLETE LM27241 www.ti.com SNVS309 – MAY 2005 LM27241 Synchronous Buck Regulator Controller for Mobile Systems Check for Samples: LM27241 FEATURES 1 •2 Input voltage range from 5.5V to 28V • Forced-PWM or Pulse-skip modes • Lossless bottom-side FET current sensing • Adaptive duty cycle clamping • High current N-channel FET drivers • Low shutdown supply currents • Reference voltage accurate to within ±1.5% • Output voltage adjustable down to 0.6V • Power Good flag and Chip Enable • Under-voltage lockout • Over-voltage/Under-voltage protection • Soft-start and Soft-shutdown • Switching frequency adjustable 200kHz- 500kHz APPLICATIONS • Notebook Chipset Power Supplies • Low Output Voltage High Efficiency Buck Regulators DESCRIPTION The LM27241 is an adjustable 200kHz-500kHz single channel voltage-mode controlled high-speed synchronous buck regulator controller. It is ideally suited for battery powered applications such as laptop and notebook computers. The LM27241 requires only N-channel FETs for both the upper and lower positions of the synchronous stage. It features line feedforward to improve the response to input transients. At very light loads, the user can choose between the high-efficiency Pulse-skip mode or the constant frequency Forced-PWM mode. Lossless current limiting without the use of external sense resistor is made possible by sensing the voltage drop across the bottom FET. A unique adaptive duty cycle clamping technique is incorporated to significantly re.


2020-05-05 : SN54F241    SN54F244    Si4410DY    SiSH615ADN    LM2755    LM2754    LM2753    LM2750-ADJ    LM2751    LM2750   


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