TPS54229DDAR ,4.5V to 18V Input, 2-A Synchronous Step-Down Converter 8-SO PowerPAD -40 to 85ELECTRICAL CHARACTERISTICSover operating free-air temperature range, V = 12 V (unless otherwise not ..
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TPS54231D ,3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode? 8-SOIC -40 to 150Maximum Ratings . 511.3 Estimated Circuit Area...... 257.2 Handling Ratings. 511.4 Electromagnetic ..
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TPS54229DDAR
4.5V to 18V Input, 2-A Synchronous Step-Down Converter 8-SO PowerPAD -40 to 85
TPS54229DDA
Vout = 50 mV/div
Iout = 1A/div
t - Time - 100sm
TPS54229
www.ti.com SLVSAZ8A –SEPTEMBER 2011–REVISED MARCH 2012
4.5Vto 18V INPUT, 2-A SYNCHRONOUS STEP DOWN CONVERTER WITH INTEGRATED
FET
Checkfor Samples: TPS54229
1FEATURES DESCRIPTIONThe TPS54229is an adaptive on-time D-CAP2™
23• D-CAP2™ Mode Enables Fast Transient mode synchronous buck converter. TheTPS54229
Response enables system designersto complete the suiteof
• Low Output Ripple and Allows Ceramic Output various end equipment’s power bus regulators witha
Capacitor cost effective, low component count, low standbycurrent solution. The main control loop for the
• Wide VIN Input Voltage Range: 4.5Vto 18V TPS54229 uses the D-CAP2™ mode control which
• Output Voltage Range: 0.76Vto 7.0V providesa fast transient response with no external
• Highly Efficient Integrated FETs Optimized compensation components. The TPS54229 also has
for Lower Duty Cycle Applications a proprietary circuit that enables the deviceto adopt
Side) and 110 mΩ (Low Side) to both low equivalent series resistance (ESR) outputcapacitors, such as POSCAPor SP-CAP, and ultra-
Less Than 10 μAat Shutdown low ESR ceramic capacitors. The device operates
Reference Accuracy from 4.5-Vto 18-V VIN input. The output voltage can
Start be programmed between 0.76V and7V. The devicealso features an adjustable soft start time. The
Start TPS54229is availablein the 8-pin DDA package,
Frequency (fSW) and designedto operate from –40°Cto 85°C.
Over Current Limit Applications for Low Voltage Supply Blu-ray Disc™ Players Home Terminal Top Box (STB) thatan important notice concerning availability, standard warranty, and usein critical applicationsof
