Datasheet 搜索 > 开发板 > TI（德州仪器） > LM5009EVAL/NOPB 数据手册 > LM5009EVAL/NOPB 产品设计参考手册 1/10 页
￥ 352.678
LM5009EVAL/NOPB 产品设计参考手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
开发板
描述:
TEXAS INSTRUMENTS LM5009EVAL/NOPB 评估板, LM5009 10V, 150mA 降压稳压器
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
原理图在P5
应用领域在P10
导航目录
LM5009EVAL/NOPB数据手册
Page:
of 10 Go
若手册格式错乱，请下载阅览PDF原文件
t
ON
=
V
IN
1.25 x 10
-10
x
R1
User's Guide
SNVA148D–February 2006–Revised April 2013
AN-1445 LM5009 Evaluation Board
1 Introduction
The LM5009EVAL 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 10V output
over an input range of 12V - 95V. The circuit delivers load currents to 150 mA, with current limit at ≊240
mA. The board is populated with all external components except C6 and C9. These components provide
options for managing the output ripple as described later in this document.
The board’s specification are:
• Input Voltage: 12V to 95V
• Output Voltage: 10V
• Maximum load current: 150 mA
• Minimum load current: 0 mA
• Current Limit: ≊240 mA
• Measured Efficiency: 93.3% (V
IN
= 12V, I
OUT
= 100 mA)
• Nominal Switching Frequency: 240 kHz
• Size: 1.6 in. x 1.0 in. x 0.5 in
Figure 1. Evaluation Board - Top Side
2 Theory of Operation
Refer to the evaluation board schematic in Figure 5, which contains a simplified block diagram of the
LM5009. When the circuit is in regulation, the buck switch is on each cycle for a time determined by R1
and the input voltage according to the equation:
(1)
All trademarks are the property of their respective owners.
1
SNVA148D–February 2006–Revised April 2013 AN-1445 LM5009 Evaluation Board
Submit Documentation Feedback
Copyright © 2006–2013, Texas Instruments Incorporated
器件 Datasheet 文档搜索
AiEMA 数据库涵盖高达 72,405,303 个元件的数据手册，每天更新 5,000 多个 PDF 文件
