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TPS54233D

更新时间： 2024-11-06 12:58:11
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德州仪器 - TI 转换器输入元件
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TPS54233D 数据手册

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TPS54233  
www.ti.com .............................................................................................................................................................................................. SLUS859–OCTOBER 2008  
2A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERTER WITH ECO-MODE™  
1
FEATURES  
DESCRIPTION  
2
•
•
•
3.5V to 28V Input Voltage Range  
Adjustable Output Voltage Down to 0.8V  
The TPS54233 is a 28-V, 2-A non-synchronous buck  
converter that integrates a low Rds(on) high side  
MOSFET. To increase efficiency at light loads, a  
pulse skipping Eco-mode™ feature is automatically  
activated. Furthermore, the 1 µA shutdown supply  
current allows the device to be used in battery  
powered applications. Current mode control with  
internal slope compensation simplifies the external  
compensation calculations and reduces component  
count while allowing the use of ceramic output  
capacitors. A resistor divider programs the Hysteresis  
of the input under-voltage lockout. An overvoltage  
transient protection circuit limits voltage overshoots  
during startup and transient conditions. A cycle by  
cycle current limit scheme, frequency fold back and  
thermal shutdown protect the device and the load in  
the event of an overload condition. The TPS54233 is  
available in an 8-pin SOIC package that has been  
internally optimized to improve thermal performance.  
Integrated 80 mΩ High Side MOSFET Supports  
up to 2A Continuous Output Current  
•
High Efficiency at Light Loads with a Pulse  
Skipping Eco-mode™  
•
•
•
•
•
•
Fixed 300kHz Switching Frequency  
Typical 1µA Shutdown Quiescent Current  
Adjustable Slow Start Limits Inrush Currents  
Programmable UVLO Threshold  
Overvoltage Transient Protection  
Cycle by Cycle Current Limit, Frequency Fold  
Back and Thermal Shutdown Protection  
•
•
Available in Easy-to-Use SOIC8 Package  
Supported by SwitcherPro™ Software Tool  
(http://focus.ti.com/docs/toolsw/folders/print/s  
witcherpro.html)  
•
For SWIFT™ Documentation, See the TI  
Website at www.ti.com/swift  
APPLICATIONS  
•
Consumer Applications such as Set-Top  
Boxes, CPE Equipment, LCD Displays,  
Peripherals, and Battery Chargers  
•
•
Industrial and Car Audio Power Supplies  
5V, 12V and 24V Distributed Power Systems  
SIMPLIFIED SCHEMATIC  
EFFICIENCY  
100  
Ren1  
V
= 3.3 V  
V
O
V
= 12 V  
IN  
= 8 V  
95  
90  
85  
EN  
VIN  
CI  
VIN  
IN  
V
= 15 V  
IN  
Ren2  
TPS54233  
CBOOT  
BOOT  
PH  
LO  
V
= 18 V  
IN  
80  
75  
70  
VOUT  
SS  
CO  
D1  
RO1  
COMP  
C1  
R3  
CSS  
65  
60  
C2  
VSENSE  
GND  
RO2  
0
0.25 0.5 0.75  
1
1.25 1.5 1.75  
2
I
- Output Current - A  
O
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
SWIFT, Eco-mode, SwitcherPro are trademarks 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 © 2008, Texas Instruments Incorporated  
1234567...26

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TPS54233D 替代型号

型号 品牌 替代类型 描述 数据表
TPS54233DG4 TI

类似代替

 3.5 to 28V Input, 2A, 300kHz Step-Down Converter with Eco-mode 8-SOIC -40 to 150
TPS54233QDRQ1 TI

类似代替

 2-A, 28-V INPUT, STEP-DOWN DC/DC CONVERTER WI
TPS54233DR TI

类似代替

 2A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERT

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TPS54233DR TI

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 		2A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERT
TPS54233DRG4 TI

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TPS54233-Q1 TI

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TPS54233QDRQ1 TI

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TPS54239 TI

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 		4.5V to 23V Input, 2-A Synchronous Step-Down SWIFT Converter
TPS54239DDA TI

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 		4.5V to 23V Input, 2-A Synchronous Step-Down SWIFT Converter
TPS54239DDAR TI

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 		4.5V to 23V Input, 2-A Synchronous Step-Down SWIFT Converter
TPS54239E TI

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 		4.5V to 23V Input, 2-A Synchronous Step-Down SWIFT Converter With Eco-mode
TPS54239EDDA TI

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 		4.5V to 23V Input, 2-A Synchronous Step-Down SWIFT Converter With Eco-mode

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