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LM3670MF-1.8/NOPB 产品设计参考手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
SOT-23-5
描述:
TEXAS INSTRUMENTS LM3670MF-1.8/NOPB 芯片, 降压直流/直流转换器, 5-SOT-23
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3Hot
典型应用电路图在P1
功能描述在P1
应用领域在P6
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LM3670MF-1.8/NOPB数据手册
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1
2
5
43
V
IN
SW
FB
EN
GND
L
1
4.7 Hμ
V
OUT
C
OUT
10 Fμ
C
IN
4.7 Fμ
LM3670
V
IN
2.5V to 5.5V
C
1
C
2
R
1
R
2
1
2
5
43
V
IN
SW
FB
EN
GND
L1:10 Hμ
V
OUT
C
OUT
10 Fμ
C
IN
4.7 Fμ
LM3670
V
IN
2.5V to 5.5V
User's Guide
SNVA098D–June 2005–Revised April 2013
AN-1348 LM3670 Evaluation Board
1 Introduction
The LM3670 evaluation board is a working demonstration of a step-down DC-DC converter. This
document contains information about the evaluation board. For further information on buck converter
topology, device electrical characteristics, and component selection please refer to the data sheet.
2 General Description
The LM3670 converts high input voltages to lower output voltages with high efficiency through an inductor
based switching topology. Automatic intelligent switching between PWM low-noise and PFM low-current
mode offers improved system control. LM3670 is available in both fixed output voltage options (1.2V,
1.5V, 1.6V, 1.8V, 1.875V, 2.5V, 3.3V) and adjustable voltage options range from 0.7V to 2.5V. The
LM3670 is available in a SOT23-5 package.
3 Operating Conditions
• V
IN
range: 2.5V ≤ V
IN
≤ 5.5V
• Recommended load current: 0 mA ≤ I
OUT
≤ 350 mA
• Ambient temperature (T
A
) range: -40C to +85C
• Junction temperature (T
J
) range: -40C to +125C
4 Typical Application
Figure 1. Fixed Output Voltage--Typical Application Circuit
Figure 2. Adjustable Output Voltage—Typical Application Circuit
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1
SNVA098D–June 2005–Revised April 2013 AN-1348 LM3670 Evaluation Board
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