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TPS54331GDR PDF预览

TPS54331GDR

更新时间： 2024-11-19 11:08:07
品牌 Logo 应用领域
德州仪器 - TI 开关控制器开关式稳压器开关式控制器电源电路转换器开关式稳压器或控制器
页数 文件大小 规格书
24页 942K
描述
具有 Eco-mode 的 3.5V 至 28V 输入、3A、570kHz 降压转换器 | D | 8 | -40 to 150

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TPS54331GDR 数据手册

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TPS54331  
www.ti.com ....................................................................................................................................................................................................... SLVS839–JULY 2008  
3A, 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 TPS54331 is a 28-V, 3-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 hysterisis  
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 TPS54331 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 3A Continuous Output Current  
•
High Efficiency at Light Loads with a Pulse  
Skipping Eco-mode™  
•
•
•
•
•
•
Fixed 570kHz 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  
90  
Ren1  
EN  
VIN  
CI  
VIN  
80  
Ren2  
V
= 12 V  
I
70  
60  
TPS54331  
V
= 18 V  
I
CBOOT  
V
= 24 V  
I
BOOT  
PH  
LO  
V = 28 V  
I
50  
40  
V
= 5 V  
VOUT  
I
SS  
CO  
30  
20  
10  
0
D1  
RO1  
COMP  
C1  
R3  
CSS  
C2  
VSENSE  
GND  
0.01  
0.1  
1
- Load Current - A  
10  
RO2  
I
L
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...24

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TPS54331GDR 替代型号

型号 品牌 替代类型 描述 数据表
TPS54331DDAR TI

类似代替

 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode 8-SO PowerPAD -40 to 150
TPS54331QDRQ1 TI

类似代替

 3-A, 28-V INPUT, STEP-DOWN SWIFT™ DC/DC CON
TPS54331DDA TI

类似代替

 3A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVE

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TPS54331QDRQ1 TI

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 		3-A, 28-V INPUT, STEP-DOWN SWIFT™ DC/DC CON
TPS54332 TI

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TPS543320 TI

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 		4V 至 18V、3A 同步 SWIFT™ 降压转换器
TPS543320RPYR TI

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 		4V 至 18V、3A 同步 SWIFT™ 降压转换器 | RPY | 14 | -40
TPS54332DDA TI

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 		具有 Eco-mode 的 3.5V 至 28V 输入、3.5A、1MHz 降压转换器 |
TPS54332DDAR TI

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 		3.5A, 28V, 1MHz, STEP DOWN DC/DC CONVERTER WITH Eco-mode
TPS54334 TI

获取价格

 		具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54334DDA TI

获取价格

 		具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换
TPS54334DDAR TI

获取价格

 		具有 570kHz 固定频率的 4.2V 至 28V 输入电压、3A 输出电流同步降压转换

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