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TSH110ILT , WIDE BAND, LOW NOISE OPERATIONAL AMPLIFIERS
TSH110ILT , WIDE BAND, LOW NOISE OPERATIONAL AMPLIFIERS
TSH110ILT , WIDE BAND, LOW NOISE OPERATIONAL AMPLIFIERS
TPS54226-TPS54226PWP-TPS54226PWPR-TPS54226RGTR
- 50 mA/divOUTOUT100 s/divm
TPS54226
www.ti.com SLVSA14E–OCTOBER 2009–REVISED JULY 2011
4.5V to 18V Input, 2-A Synchronous Step-Down SWIFTTM Converter with Eco-Mode™
Checkfor Samples: TPS54226
1FEATURES APPLICATIONS
23• D-CAP2™ Mode Enables Fast Transient •
Wide Rangeof Applications for Low Voltage
Response System Low Output Ripple and Allows Ceramic Output –
Digital TV Power Supply
Capacitor –
High Definition Blu-ray Disc™ Players Wide VCC Input Voltage Range: 4.5Vto18V –
Networking Home Terminal Wide VIN Input Voltage Range:2Vto18V –
Digital Set Top Box (STB) Output Voltage Range: 0.76Vto 5.5V
DESCRIPTION•
Highly Efficient Integrated FET’s OptimizedThe TPS54226 isa adaptive on-time D-CAP2™
for Lower Duty Cycle Applicationsmode synchronous buck converter. TheTPS54226–
160 mΩ (High Side) and 110 mΩ (Low Side) enables system designersto complete the suiteof•
High Efficiency, less than10 μA
at shutdown various end equipment’s power bus regulators witha•
Auto-Skip Eco-Mode™ for High Efficiencyat cost effective, low component count, low standby
Light Load current solution. The main control loop for the
TPS54226 uses the D-CAP2™ mode control which•
High Initial Bandgap Reference Accuracy providesa fast transient response with no external•
Adjustable Soft Start compensation components. The adoptive on-time•
Pre-Biased Soft Start control supports seamless operation between PWM
modeat heavy load condition and reduced frequency•
700-kHz Switching Frequency (fSW) Eco-Mode™ operationat light loadfor high efficiency.•
Cycle By Cycle Over Current Limit The TPS54226 also hasa proprietary circuit that•
Power Good Output enables the deviceto adoptto both low equivalent
series resistance (ESR) output capacitors, such as•
Auto-Skip ModePOSCAP or SP-CAP, and ultra-low ESR ceramic
capacitors. The device operates from 4.5-Vto 18-V
VCC input, and from 2-Vto 18-V VIN input power
supply voltage. The output voltage can be
programmed between 0.76V and 5.5V. The device
also features an adjustable slow start time anda
power good function. The TPS54226is availablein
the 14 pin HTSSOPor 16 pin QFN package, and
designedto operate from –40°Cto 85°C.
