Texas Instruments LM34919BEVAL Wide Vin Constant On-Time Buck Switching Regulator Evaluation Module LM34919BEVAL/NOPB LM34919BEVAL/NOPB 数据表
产品代码
LM34919BEVAL/NOPB
User's Guide
SNVA418A – May 2010 – Revised April 2013
AN-2016 LM34919B Evaluation Board
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Introduction
The LM34919BEVAL evaluation board provides the design engineer with a fully functional buck regulator,
employing the constant on-time (COT) operating principle. This evaluation board provides a 3.3V output
over an input range of 6V to 24V. The circuit delivers load currents to 600 mA, with current limit set at a
nominal 800 mA. The board is populated with all components except R5, C9 and C10. These components
provide options for managing the output ripple as described later in this document.
employing the constant on-time (COT) operating principle. This evaluation board provides a 3.3V output
over an input range of 6V to 24V. The circuit delivers load currents to 600 mA, with current limit set at a
nominal 800 mA. The board is populated with all components except R5, C9 and C10. These components
provide options for managing the output ripple as described later in this document.
The board’s specification are:
•
Input Voltage: 6V to 24V
•
Output Voltage: 3.3V
•
Maximum load current: 600 mA
•
Minimum load current: 0A
•
Current Limit: 780 mA to 815 mA
•
Measured Efficiency: 88.7% (V
IN
= 6V, I
OUT
= 300 mA)
•
Nominal Switching Frequency: 1.5 MHz
•
Size: 2.6 in. x 1.6 in. x 0.5 in
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SNVA418A – May 2010 – Revised April 2013
AN-2016 LM34919B Evaluation Board
Copyright © 2010–2013, Texas Instruments Incorporated