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| 型号： | TPS54225PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 4.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封装： | GREEN, PLASTIC, HTSSOP-14 |
| 文件页数： | 1/23页 |
| 文件大小： | 733K |
| 代理商： | TPS54225PWPR |
V
(50mV/div)
OUT
I
(1 A/div)
OUT
100 s/div
m
SLVSA15C
– OCTOBER 2009 – REVISED FEBRUARY 2011
4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter
Check for Samples: TPS54225
1
FEATURES
DESCRIPTION
23
D-CAP2
Mode Enables Fast Transient
Response
The TPS54225 is an adaptive on-time D-CAP2
mode synchronous buck converter. The TPS54225
Low Output Ripple and Allows Ceramic Output
enables system designers to complete the suite of
Capacitor
various end equipment
’s power bus regulators with a
Wide VCC Input Voltage Range: 4.5 V to 18 V
cost effective, low component count, low standby
Wide VIN Input Voltage Range: 2 V to 18 V
current solution. The main control loop for the
TPS54225 uses the D-CAP2
mode control which
Output Voltage Range: 0.76 V to 5.5 V
provides a fast transient response with no external
Highly Efficient Integrated FET
’s Optimized
compensation components.
for Lower Duty Cycle Applications
The TPS54225 also has a proprietary circuit that
- 160 m
(High Side) and 110 m (Low Side)
enables the device to adapt to both low equivalent
High Efficiency, less than 10
μA at shutdown
series resistance (ESR) output capacitors, such as
High Initial Bandgap Reference Accuracy
POSCAP or SP-CAP, and ultra-low ESR ceramic
Adjustable Soft Start
capacitors. The device operates from 4.5-V to 18-V
VCC input , and from 2-V to 18-V VIN input power
Pre-Biased Soft Start
supply
voltage.
The
output
voltage
can
be
700-kHz Switching Frequency (fSW)
programmed between 0.76 V and 5.5 V. The device
Cycle-By-Cycle Overcurrent Limit
also features an adjustable slow start time and a
power good function. The TPS54225 is available in
Power Good Output
the 14 pin HTSSOP package, and designed to
operate from
–40°C to 85°C.
APPLICATIONS
Wide Range of Applications for Low Voltage
System
– Digital TV Power Supply
– High Definition Blu-ray Disc Players
– Networking Home Terminal
– Digital Set Top Box (STB)
space
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
D-CAP2, PowerPAD are trademarks of Texas Instruments.
3
Blu-ray Disc is a trademark of Blu-ray Disc Association.
PRODUCTION DATA information is current as of publication date.
2009–2011, 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS54225-Q1 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter |
| TPS54225TPWPRQ1 | 功能描述:直流/直流开关调节器 4.5V-18Vin,2A Sync Step-Down DCAP2 Mode 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 |
| TPS54226 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5V to 18V Input 2-A Synchronous Step-Down SWIFTTM Converter with Light Load Efficiency |
| TPS54226_12 | 制造商:TI 制造商全称:Texas Instruments 功能描述:4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter with Eco-Modea?￠ |
| TPS54226EVM-539 | 功能描述:电源管理IC开发工具 TPS54226 SWIFT Reg Eval Mod 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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