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TPS2147IDGQRG4

更新时间： 2024-11-07 22:15:31
品牌 Logo 应用领域
德州仪器 - TI 便携式
页数 文件大小 规格书
29页 568K
描述
LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

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TPS2147IDGQRG4 数据手册

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ꢀ ꢁꢂꢃ ꢄ ꢆ ꢆ ꢇ ꢀꢁ ꢂ ꢃꢄ ꢆꢈ  
SLVS333 − AUGUST 2001  
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FEATURES  
DESCRIPTION  
D
Two 340-mΩ (Typical) High-Side MOSFETs  
200 mA Low-Dropout Voltage Regulator In  
Fixed 3.3-V or Adjustable Versions  
Two power-distribution switches and an adjustable  
(TPS2145) or fixed (TPS2147) LDO are incorporated in  
one small package, providing a power management  
solution that saves up to 60% in board space over  
typical implementations.  
D
D
Independent Thermal- and Short-Circuit  
Protection for LDO and Each Switch  
D
D
D
D
D
Overcurrent Indicators With Transient Filter  
2.9-V to 5.5-V Operating Range  
Designed to meet USB 2.0 bus-powered hub  
requirements, these devices also allow core and I/O  
voltage sequencing in DSP applications, or power  
segmentation in portable equipment. Each current-  
limited switch is a 340-mΩ N-channel MOSFET capable  
of supplying 200 mA of continuous current. A logic  
enable compatible with 5-V logic and 3-V logic controls  
each MOSFET as well as the LDO in the TPS2145. The  
internal charge pump provides the gate drive controlling  
the power-switch rise times and fall times, minimizing  
current surges during switching. The charge pump  
requires no external components.  
CMOS- and TTL-Compatible Enable Inputs  
75-µA (Typical) Supply Current  
Available in 10-Pin MSOP or 14-Pin TSSOP  
(PowerPAD)  
D
−40°C to 85°C Ambient Temperature Range  
APPLICATIONS  
D
USB Hubs and Peripherals  
− Keyboards  
− Zip Drives  
The LDO has a drop-out voltage of only 0.35 V and with  
the independent enable on the TPS2145 LDO, the LDO  
can be used as an additional switch. The LDO output  
range for the TPS2145 is 1 V to 3.3 V, while the  
TPS2147 is fixed at 3.3 V.  
− Speakers and Headsets  
D
D
PDAs and Portable Electronics  
DSP Power Sequencing  
The TPS2145 and TPS2147 have active-low switch  
enables and the TPS2155 and TPS2157 have  
active-high switch enables.  
LDO and dual switch family selection guide and schematics  
TPS2149/59  
MSOP−8  
TPS2148/58  
MSOP−8  
TPS2145/55  
TSSOP−14  
TPS2147/57  
MSOP−10  
LDO_OUT  
LDO_ADJ  
VIN/SW1  
VIN  
LDO  
LDO_OUT  
VIN/SW1  
LDO_EN  
VIN/SW1  
LDO_OUT  
LDO_OUT  
LDO  
LDO  
LDO  
LDO_EN  
EN2  
OC1  
OC1  
OUT2  
OUT1  
OC  
OUT1  
OUT1  
EN1  
EN1  
EN1  
OUT1  
OUT2  
OUT2  
OC2  
OUT2  
OC2  
SW2  
SW2  
EN1  
GND  
EN2  
GND  
EN2  
EN2  
GND  
GND  
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.  
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Copyright 2001, Texas Instruments Incorporated  
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中文翻译

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TPS2147IDGQRG4 替代型号

型号 品牌 替代类型 描述 数据表
TPS2147IDGQG4 TI

完全替代

 LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS
TPS2147IDGQ TI

完全替代

 LDO AND DUAL SWITCH WITH CONTROLLED RISE TIMES FOR DSP AND PORTABLE APPLICATIONS

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