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| 型号： | TPS54872PWP |
| 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： | 1/21页 |
| 文件大小： | 588K |
| 代理商： | TPS54872PWP |
TPS54872
SLVS436C JULY 2002 REVISED FEBRUARY 2005
8A OUTPUT, 4V TO 6V INPUT TRACKING/TERMINATION
SYNCHRONOUS PWM SWITCHER WITH INTEGRATED FETs (SWIFT)
6,4 mm x 9,7 mm
FEATURES
D Tracks Externally Applied Reference Voltage
D 30-m MOSFET Switches for High Efficiency
at 8-A Continuous Output Source or Sink
Current
D 6% to 90% VI Output Tracking Range
D Wide PWM Frequency:
Fixed 350 kHz or Adjustable 280 kHz to
700 kHz
D Load Protected by Peak Current Limit and
Thermal Shutdown
D Integrated Solution Reduces Board Area and
Total Cost
APPLICATIONS
D DDR Memory Termination Voltage
D Active Termination of GTL and SSTL
High-Speed Logic Families
D DAC Controlled High Current Output Stage
D Precision Point of Load Power Supply
DESCRIPTION
As a member of the SWIFT
family of dc/dc regulators,
the TPS54872 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 under transient conditions 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 3.8 V; an internally set
slow-start circuit to limit in-rush currents; and a status
output to indicate valid operating conditions.
The TPS54872 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.
SIMPLIFIED SCHEMATIC
VIN
PH
BOOT
PGND
VSENSE
V(TTQ)
AGND
VBIAS
Input
TPS54872
COMP
Compensation
Network
REFIN
t Time 100 ms/div
Output
V
oltage
20
mV/div
TRANSIENT RESPONSE
V
O
Output
Current
2
A/div
I O
VI = 5 V,
VO = 1.25 V
2 A to 6 A
V(DDQ)
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 2005, Texas Instruments Incorporated
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS54872PWPG4 | 功能描述:直流/直流开关调节器 8A Act Bus Term/DDR DC/DC 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 |
| TPS54872PWPR | 功能描述:直流/直流开关调节器 8A Act Bus Term/DDR DC/DC 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 |
| TPS54872PWPRG4 | 功能描述:直流/直流开关调节器 8A Act Bus Term/DDR DC/DC 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 |
| TPS54873 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4-V TO 6-V INPUT, 8-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP |
| TPS54873EVM | 功能描述:电源管理IC开发工具 8-A 5Vin 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 |
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