Datasheet Texas Instruments LM34910CSD/NOPB — 数据表

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 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. 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 …