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LM3743 Datasheet

Part Number LM3743
Manufacturers National Semiconductor
Logo National Semiconductor
Description N-Channel FET Synchronous Buck Controller
Datasheet LM3743 DatasheetLM3743 Datasheet (PDF)

www.DataSheet4U.com LM3743 N-Channel FET Synchronous Buck Controller for Low Output Voltages September 2006 LM3743 N-Channel FET Synchronous Buck Controller for Low Output Voltages General Description The LM3743 is a voltage mode PWM buck controller which implements synchronous rectification. It provides a low cost, fault tolerant, and efficient point of load solution. To reduce component count several parameters are fixed, such as switching frequency and the short circuit protection level. F.

  LM3743   LM3743






Part Number LM3743
Manufacturers Texas Instruments
Logo Texas Instruments
Description PWM Buck Controller
Datasheet LM3743 DatasheetLM3743 Datasheet (PDF)

LM3743 www.ti.com SNVS427E – SEPTEMBER 2006 – REVISED APRIL 2013 LM3743 High-Performance Synchronous Buck Controller with Comprehensive Fault Protection Features Check for Samples: LM3743 FEATURES 1 •2 Input Voltage From 3.0V to 5.5V • Output Voltage Adjustable Down to 0.8V • Reference Accuracy: ±1.75%, over Full Temperature and Input Voltage Range • High-Side and Low-Side N-Channel MOSFETs • Switching Frequency Options of 1 MHz or 300 kHz • Comprehensive Fault Protection Features: – High-Si.

  LM3743   LM3743







N-Channel FET Synchronous Buck Controller

www.DataSheet4U.com LM3743 N-Channel FET Synchronous Buck Controller for Low Output Voltages September 2006 LM3743 N-Channel FET Synchronous Buck Controller for Low Output Voltages General Description The LM3743 is a voltage mode PWM buck controller which implements synchronous rectification. It provides a low cost, fault tolerant, and efficient point of load solution. To reduce component count several parameters are fixed, such as switching frequency and the short circuit protection level. For example the LM3743 has an operating switching frequency of 300 kHz or 1 MHz and a fixed 500 mV high side current limit for switch node short-circuit protection. LM3743 is a very fault tolerant IC with switch node short-circuit, output undervoltage protection, and the ability to self recover after the removal of the fault. It avoids the need to over design components due to thermal runaway during a fault condition, thus resulting in a lower cost solution. It employs a proprietary monotonic glitch free pre-bias start-up method suited for FPGAs and ASIC logic devices. A 0.8V internal reference with ± 1.75% accuracy is ideal for sub-volt conversion. An external programmable soft-start allows for tracking and timing flexibility. The driver features 1.6Ω of pull-up resistance and 1Ω of pull-down drive resistance for high power density and very efficient power processing. n Reference accuracy: ± 1.75%, over full temperature and input voltage range n Low-side sensing programmable current li.


2006-10-21 : 02N120    93C46CB3    SKKT91    SKKT92    SKKL92    SKKH91    SKKH92    EC3592R    TA8258HQ    TC5501   


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