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TPS61081

更新时间： 2024-02-01 09:46:04
品牌 Logo 应用领域
德州仪器 - TI 转换器开关高压升压转换器
页数 文件大小 规格书
25页 912K
描述
HIGH VOLTAGE DC/DC BOOST CONVERTER WITH 0.5-A/1.3-A INTEGRATED SWITCH

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TPS61081 数据手册

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TPS61080  
TPS61081  
www.ti.com  
SLVS644B–FEBRUARY 2006–REVISED JANUARY 2007  
HIGH VOLTAGE DC/DC BOOST CONVERTER WITH 0.5-A/1.3-A INTEGRATED SWITCH  
FEATURES  
DESCRIPTION  
•
•
•
2.5-V to 6-V Input Voltage Range  
The TPS61080/1 is  
a
1.2MHz/600kHz fixed  
frequency boost regulator designed for high  
integration, which integrates a power switch, an  
input/output isolation switch and a power diode.  
When a short circuit condition is detected, the  
isolation switch opens up to disconnect the output  
from the input. As a result, the IC protects itself and  
the input source from any pin, except VIN, from  
being shorted to ground. The isolation switch also  
disconnects the output from input during shutdown to  
prevent any leakage current. Other provisions for  
protection include 0.5A/1.3A peak-to-peak over  
current protection, programmable soft start (SS),  
over voltage protection (OVP), thermal shutdown and  
under voltage lockout (UVLO).  
Up to 27-V Output Voltage  
0.5-A Integrated Switch (TPS61080)  
1.3-A Integrated Switch (TPS61081)  
•
12 V/400 mA and 24 V/170 mA From 5-V Input  
(TYP)  
•
•
Integrated Power Diode  
1.2-MHz/600-kHz Selectable Fixed Switching  
Frequency  
•
•
•
•
•
•
Input to Output Isolation  
Short-Circuit Protection  
Programmable Soft Start  
Overvoltage Protection  
Up to 87% Efficiency  
The IC operates from input supplies including single  
Li-ion battery, triple NiMH, and regulated 5V, such as  
USB output. The output can be boosted up to 27V.  
TPS61080/1 can provide the supply voltages of  
OLED, TFT-LCD bias, 12V and 24V power rails. The  
output of TPS61080/1 can also be configured as a  
current source to power up to 7 WLED in flash light  
applications.  
10-Pin 3 mm×3 mm QFN Package  
APPLICATIONS  
•
3.3V to 12V, 5V to 12V and 24V Boost  
Converter  
White LED Backlight for Media Form Factor  
Display  
OLED Power Supply  
xDSL Applications  
•
ORDERING INFORMATION  
•
•
•
•
TA  
OVERCURRENT  
LIMIT  
PACKAGE  
PACKAGE  
MARKING  
TFT-LCD Bias Supply  
White LED Flash Light  
0.5A(min)  
1.3A(min)  
0.5A(min)  
1.3A(min)  
TPS61080DRCR  
TPS61081DRCR  
TPS61080DRCT  
TPS61081DRCT  
BCN  
BCO  
BCN  
BCO  
–40°C  
to 85°C  
TYPICAL APPLICATION  
TOP VIEW  
TPS61081  
L1 4.7 µH  
L
VIN  
SS  
SW  
Vin 5V  
SW  
VIN  
EN  
L
OUT  
PGND  
FSW  
EN  
12 V/250 mA  
V
O
Thermal  
Pad  
OUT  
C1  
R3  
100 Ω  
C3  
33pF  
R1  
FSW  
4.7 mF  
GND  
FB  
437 kW  
FB  
SS  
4.7 µF  
Cs  
47 nF  
PGND  
GND  
R2  
49.9 kW  
10-PIN 3mm x 3mm x 1mm QFN  
L1: TDK VLCF5020T-4R7N1R7-1  
C1: Murata GRM188R60J105K  
C2: Murata GRM219R61C475K  
C3: Feed forward capacitor for stability  
R3: Noise decoupling resistor  
Cs: Soft start programming capacitor  
Figure 1. 5V to 12V, 250mA Step-Up DC/DC  
Converter  
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.  
PowerPAD is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2006–2007, 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.  
1234567...25

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TPS61081 替代型号

型号 品牌 替代类型 描述 数据表
TPS61080 TI

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