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| 型号： | TPS54226PW |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 封装： | PACKAGE-14 |
| 文件页数： | 1/20页 |
| 文件大小： | 501K |
| 代理商： | TPS54226PW |
V
-50mA/div
OUT
I
-1 A/div
OUT
100
s/div
m
www.ti.com
SLVSA14B – OCTOBER 2009 – REVISED JUNE 2010
4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter with Eco-Mode
Check for Samples: TPS54226
1
FEATURES
APPLICATIONS
Wide Range of Applications for Low Voltage
23
D-CAP2 Mode Enables Fast Transient
System
Response
–
Digital TV Power Supply
Low Output Ripple and Allows Ceramic Output
–
High Definition Blu-ray Disc Players
Capacitor
–
Networking Home Terminal
Wide VCC Input Voltage Range: 4.5 V to 18 V
–
Digital Set Top Box (STB)
Wide VIN Input Voltage Range: 2 V to 18 V
Output Voltage Range: 0.76 V to 5.5 V
DESCRIPTION
Highly Efficient Integrated FET’s Optimized
The TPS54226 is a adaptive on-time D-CAP2
for Lower Duty Cycle Applications
mode synchronous buck converter. TheTPS54226
– 160 m
(High Side) and 110 m (Low Side)
enables system designers to complete the suite of
High Efficiency, less than 10 mA at shutdown
various end equipment’s power bus regulators with a
cost effective, low component count, low standby
Auto-Skip Eco-Mode for High Efficiency at
current solution. The main control loop for the
Light Load
TPS54226 uses the D-CAP2 mode control which
High Initial Bandgap Reference Accuracy
provides a fast transient response with no external
Adjustable Soft Start
compensation components. The adoptive on-time
control supports seamless operation between PWM
Pre-Biased Soft Start
mode at heavy load condition and reduced frequency
700-kHz Switching Frequency (fSW)
Eco-Mode operation at light load for high efficiency
Cycle By Cycle Over Current Limit
. The TPS54226 also has a proprietary circuit that
Power Good Output
enables the device to adopt to both low equivalent
series resistance (ESR) output capacitors, such as
Auto-Skip Mode
POSCAP or SP-CAP, and ultra-low ESR ceramic
capacitors. The device operates from 4.5-V to 18-V
VCC input, and from 2-V to 18-V VIN input power
supply
voltage.
The
output
voltage
can
be
programmed between 0.76 V and 5.5 V. The device
also features an adjustable slow start time and a
power good function. The TPS54226 is available in
the 14 pin HTSSOP or 16 pin QFN package, and
designed to operate from –40°C to 85°C.
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, Eco-Mode, 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.
Copyright 2009–2010, 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 |
|---|---|
| TPS54226PWP | 功能描述:直流/直流开关调节器 4.5-18V 2A Sync Step Down 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 |
| TPS54226PWP | 制造商:Texas Instruments 功能描述:DC/DC STEP DOWN CONVERTER IC 700kHz HT 制造商:Texas Instruments 功能描述:IC, SYNC STEP-DOWN DC/DC CONV, HTSSOP-14 |
| TPS54226PWPR | 功能描述:直流/直流开关调节器 4.5-18V 2A Sync Step Down 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 |
| TPS54226RGTR | 功能描述:直流/直流开关转换器 4.5-18V Inp,2A Synch Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| TPS54226RGTT | 功能描述:直流/直流开关转换器 4.5-18V Inp,2A Synch Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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