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参数资料
| 型号： | TPS54225TPWPRQ1 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PDSO14 |
| 封装： | PLASTIC, TSSOP-14 |
| 文件页数： | 1/18页 |
| 文件大小： | 354K |
| 代理商： | TPS54225TPWPRQ1 |
V
(50mV/div)
OUT
I
(1 A/div)
OUT
100 s/div
m
SLVSAV9
– JUNE 2011
4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter
Check for Samples: TPS54225-Q1
1
FEATURES
DESCRIPTION
23
Qualified for Automotive Applications
The TPS54225-Q1 is an adaptive on-time D-CAP2
D-CAP2
Mode Enables Fast Transient
mode
synchronous
buck
converter.
The
Response
TPS54225-Q1 enables system designers to complete
Low Output Ripple and Allows Ceramic Output
the suite of various end equipment
’s power bus
Capacitor
regulators with a cost effective, low component count,
Wide VCC Input Voltage Range: 4.5 V to 18 V
low standby current solution. The main control loop
Wide VIN Input Voltage Range: 2 V to 18 V
for the TPS54225-Q1 uses the D-CAP2
mode
control which provides a fast transient response with
Output Voltage Range: 0.76 V to 5.5 V
no external compensation components.
Highly Efficient Integrated FET
’s Optimized
for Lower Duty Cycle Applications
The TPS54225-Q1 also has a proprietary circuit that
- 160 m
(High Side) and 110 m (Low Side)
enables the device to adapt to both low equivalent
series resistance (ESR) output capacitors, such as
High Efficiency, less than 10
μA at shutdown
POSCAP or SP-CAP, and ultra-low ESR ceramic
High Initial Bandgap Reference Accuracy
capacitors. The device operates from 4.5-V to 18-V
Adjustable Soft Start
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
also features an adjustable slow start time and a
Cycle-By-Cycle Overcurrent Limit
power good function. The TPS54225-Q1 is available
Power Good Output
in 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.
Copyright
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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| TPS54226PW | 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 |
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