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LM34910C

Texas Instruments
Part Number LM34910C
Manufacturer Texas Instruments
Description Step Down Switching Regulator
Published Apr 8, 2020
Detailed Description LM34910C www.ti.com SNVS517B – MAY 2007 – REVISED MARCH 2013 LM34910C High Voltage (50V, 1.25A) Step Down Switching R...
Datasheet PDF File LM34910C PDF File

LM34910C
LM34910C

Overview
LM34910C www.
ti.
com SNVS517B – MAY 2007 – REVISED MARCH 2013 LM34910C High Voltage (50V, 1.
25A) Step Down Switching Regulator Check for Samples: LM34910C FEATURES 1 •2 Integrated 55V, N-Channel Buck Switch • Integrated Start-Up Regulator • Input Voltage Range: 8V to 50V • No Loop Compensation Required • Ultra-Fast Transient Response • Operating Frequency Remains Constant with Load Current and Input Voltage • Maximum Duty Cycle Limited During Start-Up • Adjustable Output Voltage • Valley Current Limit At 1.
25A • Precision Internal Reference • Low Bias Current • Highly Efficient Operation • Thermal Shutdown TYPICAL APPLICATIONS • High Efficiency Point-Of-Load (POL) Regulator • Non-Isolated Telecommunication Buck Regulator • Secondary High Voltage Post Regulator DESCRIPTION The LM34910C Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, buck bias regulator capable of supplying 1.
25A to the load.
This buck regulator contains a 55V N-Channel Buck Switch, and is available in the thermally enhanced WSON-10 package.
The hysteretic regulation scheme requires no loop compensation, results in fast load transient response, and simplifies circuit implementation.
The operating frequency remains constant with line and load variations due to the inverse relationship between the input voltage and the on-time.
The current limit detection is set at 1.
25A.
Additional features include: VCC under-voltage lockout, thermal shutdown, gate drive under-voltage lockout, and maximum duty cycle limiter.
Package • WSON-10 (4 mm x 4 mm) • Exposed Thermal Pad For Dissipation Improved Heat Connection Diagram SW BST ISEN SGND RTN 1 2 3 4 5 10 VIN 9 VCC 8 RON/SD 7 SS 6 FB 10-Lead WSON 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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