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TPS54061

更新时间： 2024-11-19 11:44:23
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德州仪器 - TI 转换器
页数 文件大小 规格书
36页 1588K
描述
Wide Input 60V, 200mA Synchronous Step-Down DC-DC Converter with Low IQ

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TPS54061 数据手册

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TPS54061  
www.ti.com  
SLVSBB7A –MAY 2012–REVISED MAY 2012  
Wide Input 60V, 200mA Synchronous Step-Down DC-DC Converter with Low IQ  
Check for Samples: TPS54061  
1
FEATURES  
DESCRIPTION  
The TPS54061 device is  
a
60-V, 200-mA,  
2
•
Integrated High Side and Low Side MOSFET  
synchronous step-down DC-DC converter with  
integrated high side and low side MOSFETs. Current  
mode control provides simple external compensation  
and flexible component selection. The non-switching  
supply current is 90 µA. Using the enable pin,  
shutdown supply current is reduced to 1.4 µA.  
•
Diode Emulation for Improved Light Load  
Efficiency  
•
•
•
•
Peak Current Mode Control  
90 µA Operating Quiescent Current  
1.4 µA Shutdown Supply Current  
To increase light load efficiency the low side  
MOSFET emulates a diode when the inductor current  
reaches zero.  
50 kHz to 1100 kHz Adjustable Switching  
Frequency  
•
•
•
•
Synchronizes to External Clock  
Internal Slow Start  
Under voltage lockout is internally set at 4.5 V, but  
can be increased using two resistors on the enable  
pin. The output voltage startup ramp is controlled by  
the internal slow start time.  
0.8 V ±1% Voltage Reference  
Stable with Ceramic Output Capacitors or Low  
Cost Aluminum Electrolytic  
The adjustable switching frequency range allows  
efficiency and external component size to be  
optimized. Frequency foldback and thermal shutdown  
protects the part during an overload condition.  
•
•
•
Cycle-by-Cycle Current Limit, Thermal, OVP  
and Frequency Fold Back Protection  
VSON-8 Package, 3 mm X 3 mm With Thermal  
Pad  
The TPS54061 enables small designs by integrating  
the MOSFETs, boot recharge diode, and minimizing  
the IC footprint with a small 3mm x 3mm thermally  
enhanced VSON package  
–40°C to 150°C Operating Junction  
Temperature  
APPLICATIONS  
The TPS54061 is supported in the Webench™  
Designer at www.ti.com.  
•
•
•
4-20 mA Current-Loop Powered Sensors  
Low Power Standby or Bias Voltage Supplies  
EFFICIENCY  
Industrial Process Control, Metering, and  
Security Systems  
100  
90  
80  
70  
60  
50  
40  
30  
•
High Efficiency Replacement for High Voltage  
Linear Regulators  
SIMPLIFIED SCHEMATIC  
VIN  
VOUT  
V
V
= 5 V  
V
F
= 12 V,  
OUT  
OUT  
IN  
20  
10  
0
= 400 kHz  
= 3.3 V  
SW  
0
0.025  
0.05  
0.075  
0.1  
0.125  
0.15  
0.175  
0.2  
Load Current (A)  
COMP  
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.  
2
Webench is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2012, Texas Instruments Incorporated  
1234567...36

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