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LM34917A
www.ti.com SNOSAX7D – DECEMBER 2007 – REVISED MARCH 2013 LM34917A Ultra Small 33V, 1.25A Constant On-Time Buck Switching Regulator with
Intelligent Current Limit
Check for Samples: LM34917A FEATURES PACKAGE 1 2 Functional Input Voltage Range: 8V to 33V
DSBGA package
Input Over-Voltage Shutdown at в‰Љ35V
Transient Capability to 50V
Integrated N-Channel buck switch
Valley current limit varies with VIN and VOUT to
reduce excessive inductor current
On-time is reduced when in current limit
Integrated start-up regulator
No loop compensation required
Ultra-Fast transient response
Maximum switching frequency: 2 MHz
Operating frequency remains nearly constant
with load current and input voltage variations
Programmable soft-start
Precision internal reference
Adjustable output voltage
Thermal shutdown TYPICAL APPLICATIONS High Efficiency Point-Of-Load (POL) Regulator
Non-Isolated Buck Regulator
Secondary High Voltage Post Regulator 12-Bump DSBGA Package DESCRIPTION …
