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TPS55065-Q1 PDF预览

TPS55065-Q1

更新时间： 2024-11-21 12:16:15
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关
页数 文件大小 规格书
30页 825K
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BUCK/BOOST SWITCH-MODE REGULATOR

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TPS55065-Q1 数据手册

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TPS55065-Q1  
www.ti.com ............................................................................................................................................................................................... SLIS132–OCTOBER 2008  
BUCK/BOOST SWITCH-MODE REGULATOR  
1
FEATURES  
23  
•
Qualified for Automotive Applications  
•
•
•
•
•
Switched 5-V Regulated Output on 5Vg With  
Current Limit  
•
Switch-Mode Regulator  
Programmable Slew Rate and Frequency  
Modulation for EMI Consideration  
–
–
5 V ±2%, Normal Mode  
5 V ±3%, Low-Power or Crossover Mode  
Reset Function With Deglitch Timer and  
Programmable Delay  
•
•
Switching Frequency, 440 kHz (typical)  
Input Operating Range, 1.5 V to 40 V, (Vdriver  
)
Alarm Function for Undervoltage Detection  
and Indication  
–
500-mA Load-Current Capability  
200-mA Load-Current Capability Down to  
2-V Input (Vdriver  
120-mA Load-Current Capability Down to  
1.5-V Input (Vdriver  
Enable Function  
Low-Power Operation Mode  
–
Thermally Enhanced Package for Efficient  
Heat Management  
)
–
)
APPLICATIONS  
•
•
•
Automotive Electronic Controller Power  
Supply  
PWP HTSSOP PACKAGE  
(TOP VIEW)  
SCR1  
Cboot2  
Cboot1  
Vdriver  
1
2
3
4
5
6
7
8
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
SCR0  
5Vg_ENABLE  
ENABLE  
Vlogic  
L1  
PGND  
L2  
GND  
Rmod  
REST  
AOUT  
VOUT  
5Vg  
AIN  
9
10  
RESET  
CLP  
P0021-02  
DESCRIPTION  
The TPS55065 is a switch-mode regulator with integrated switches for voltage-mode control. With the aid of  
external components (LC combination), the device regulates the output to 5 V ±3% for a wide input-voltage  
range.  
The TPS55065 offers a reset function to detect and indicate when the 5-V output rail is outside of the specified  
tolerance. This reset delay is programmable using an external timing capacitor on the REST terminal.  
Additionally, an alarm (AOUT) feature is activated when the input supply rail Vdriver is below a prescaled specified  
value (set by the AIN terminal).  
The TPS55065 has a frequency-modulation scheme to minimize EMI. The clock modulator permits a modulation  
of the switching frequency to reduce interference energy in the frequency band.  
The 5Vg output is a switched 5-V regulated output with internal current limiting to prevent RESET from being  
asserted when powering a capacitive load on the supply line. This function is controlled by the 5Vg_ENABLE  
terminal. If there is a short to ground on this output (5Vg output), the output self-protects by operating in a  
chopping mode. This does, however, increase the output ripple voltage on VOUT during this fault condition.  
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
3
PowerPAD is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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...30

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