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LM2694SD/NOPB 数据手册 - National Semiconductor（美国国家半导体）
制造商:
National Semiconductor（美国国家半导体）
封装:
LLP-10
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P2Hot
典型应用电路图在P1P6P7P8P10P13
原理图在P6P7P8P10P11P13
封装尺寸在P18P20P21P22
焊盘布局在P23
标记信息在P18
封装信息在P3P18P19P20P21
功能描述在P7
技术参数、封装参数在P3P4
应用领域在P1P11P26
电气规格在P3P4P5
导航目录
LM2694SD/NOPB数据手册
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VIN
SW
BST
LM2694
VCC
SS
RON/SD
8V - 30V
Input
C1
R
ON
R2
R1
C2
V
OUT
L1
C3
C4
D1
C6
RTN
ISEN
SGND
FB
SHUTDOWN
R3
LM2694
www.ti.com
SNVS444A –MAY 2006–REVISED APRIL 2013
LM2694 30V, 600 mA Step Down Switching Regulator
Check for Samples: LM2694
1
FEATURES
DESCRIPTION
The LM2694 Step Down Switching Regulator features
2
• Integrated N-Channel Buck Switch
all of the functions needed to implement a low cost,
• Integrated Start-Up Regulator
efficient, buck bias regulator capable of supplying
• Input Voltage Range: 8V to 30V
0.6A to the load. This buck regulator contains an N-
Channel Buck Switch, and is available in the 3 x 3
• No Loop Compensation Required
thermally enhanced WSON-10 package and a
• Ultra-Fast Transient Response
TSSOP-14 package. The feedback regulation
• Operating Frequency Remains Constant with
scheme requires no loop compensation, results in
Load Current and Input Voltage Variations
fast load transient response, and simplifies circuit
implementation. The operating frequency remains
• Maximum Duty Cycle Limited During Start-Up
constant with line and load variations due to the
• Adjustable Output Voltage
inverse relationship between the input voltage and
• Valley Current Limit At 0.6A
the on-time. The valley current limit results in a
smooth transition from constant voltage to constant
• Maximum Switching Frequency: 1 MHz
current mode when current limit is detected, reducing
• Precision Internal Reference
the frequency and output voltage, without the use of
• Low Bias Current
foldback. Additional features include: VCC under-
voltage lockout, thermal shutdown, gate drive under-
• Highly Efficient Operation
voltage lockout, and maximum duty cycle limiter.
• Thermal Shutdown
Package
TYPICAL APPLICATIONS
• WSON-10 (3 mm x 3 mm) w/Exposed Pad
• High Efficiency Point-Of-Load (POL) Regulator
• TSSOP-14
• Non-Isolated Telecommunication Buck
Regulator
• Secondary High Voltage Post Regulator
Basic Step Down Regulator
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2006–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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