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| 型号： | TPS54873PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| 封装： | GREEN, PLASTIC, HTSSOP-28 |
| 文件页数： | 1/22页 |
| 文件大小： | 605K |
| 代理商： | TPS54873PWPR |
TPS54873
SLVS444A OCTOBER 2002 REVISED FEBRUARY 2005
4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK
SWITCHER WITH DISABLED SINKING DURING START-UP
6,4 mm X 9,7 mm
Typical Size
FEATURES
D 30-m, 12-A Peak MOSFET Switches for High
Efficiency at 8-A Continuous Output Source
or Sink Current
D Disabled Current Sinking During Start-Up
D 0.9-V to 3.3-V Adjustable Output Voltage
Range With 1.0% Accuracy
D Wide PWM Frequency:
Fixed 350 kHz, 550 kHz or
Adjustable 280 kHz to 700 kHz
D Synchronizable to 700 kHz
D Load Protected by Peak Current Limit and
Thermal Shutdown
D Integrated Solution Reduces Board Area and
Component Count
APPLICATIONS
D Low-Voltage, High-Density Distributed Power
Systems
D Point of Load Regulation for High
Performance DSPs, FPGAs, ASICs and
Microprocessors
D Broadband, Networking and Optical
Communications Infrastructure
D Power PC Series Processors
DESCRIPTION
As a member of the SWIFT family of dc/dc regulators,
the TPS54873 low-input voltage high-output current
synchronous buck PWM converter integrates all
required active components. Included on the substrate
with the listed features are a true, high performance,
voltage error amplifier that enables maximum
performance and flexibility in choosing the output filter
L and C components; an under-voltage-lockout circuit
to prevent start-up until the input voltage reaches 4 V;
an internally or externally set slow-start circuit to limit
inrush currents; and a power good output useful for
processor/logic reset, fault signaling, and supply
sequencing.
For reliable power up in output precharge applications,
the TPS54873 is designed to only source current during
startup.
The TPS54873 is available in a thermally enhanced
28-pin TSSOP (PWP) PowerPAD package, which
eliminates bulky heatsinks. TI provides evaluation
modules and the SWIFT designer software tool to aid
in quickly achieving high-performance power supply
designs to meet aggressive equipment development
cycles.
TYPICAL APPLICATION
VIN
PH
BOOT
PGND
VSENSE
Core Supply
COMP
AGND
VBIAS
I/O Supply
TPS54873
**
* Optional
5.0 ms/div
1V/div
START-UP WAVEFORM
VO = 3.3 V
**
VI = 5 V
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
PowerPAD and SWIFT are trademarks of Texas Instruments.
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.
www.ti.com
Copyright 2002, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS54873PWPRG4 | 功能描述:直流/直流开关调节器 5V Inp 8A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS54880 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4-V TO 6-V INPUT, 8-A OUTPUT TRACKING SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs (SWIFT) FOR SEQUENCING |
| TPS54880EVM | 功能描述:电源管理IC开发工具 8-A DC/DC Conv RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| TPS54880PWP | 功能描述:直流/直流开关调节器 5V Inp 8A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| TPS54880PWPG4 | 功能描述:直流/直流开关调节器 5V Inp 8A Sync Buck Converter RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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