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1、(3,25 mm x 3,25 mm)FEATURESDESCRIPTIONAPPLICATIONSL1VINVINAENPS/SYNCGNDL2VOUTFBPGNDL12.2? FR1R2C2 10? FR3C3C1 10? FVIN 1.8? V? to 5.5? VVOUT 3.3? V? up? to 1200? mATPS63000TPS63000 TPS63001 TPS63002SLVS520MARCH 2006HIGH EFFICIENT SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 1.8-A SWITCHESUp to 95% Effi
2、ciencyThe TPS6300x devices provideapowersupply solution for products powered by either a two-cell, or1200-mA Output Current at 3.3 V in Step Down three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion orMode (VIN 3.6 V.5.5 V) Li-polymer battery. Output currents can go as high asup to 800-mA Output Cu
3、rrent at 3.3 V in Boost1200 mA while using a single-cell Li-Ion or Li-PolymerMode (VIN 2.4 V)Battery, and discharge it down to 2.5 V or lower. The Automatic Transition between Step Down andbuck-boost converter is based on a fixed frequency, Boost Modepulse-width-modulation(PWM)controllerusing synchr
4、onousrectificationtoobtainmaximumDevice Quiescent Current less than 50 Aefficiency. At low load currents the converter entersInput Voltage Range: 1.8 V to 5.5 Vthe Power Save mode to maintain a high efficiency Fixed and Adjustable Output Voltage Optionsover a wide load current range. The Power Save
5、from 1.2 V to 5.5 Vmode can be disabled, forcing the converter to operate at a fixed switching frequency. The maximumPower Save Mode for Improved Efficiency ataverage current in the switches is limited to a typicalLow Output Powervalue of 1800 mA. The output voltage can beForced fixed Frequency Oper
6、ation andprogrammed by an external resistor divider, or isSynchronization possiblefixed internally on the chip. The converter can be disabled to minimize battery drain. During shutdown,Load Disconnect During Shutdown the load is completely disconnected from the battery.Over-Temperature ProtectionThe
7、deviceispackagedina10-pinQFNAvailable in Small 3 mm x 3 mm, QFN-10PowerPADpackage measuring 3 mm x 3 mmPackage(DRC).All Two-Cell and Three-Cell Alkaline, NiCd or NiMH or Single-Cell Li Battery Powered Products Portable Audio Players PDAs Cellular Phones Personal Medical Products White LEDsPlease be
8、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. PowerPAD is a trademark of Texas Instruments.PRODUCTION DATA information is current a
9、s of publication date.Copyright 2006, Texas Instruments IncorporatedProducts conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all ABSOLUTE MAXIMUM RATINGSDISSIPATION RATINGS TABLERECOMMENDED OPERATING CO
10、NDITIONSTPS63000 TPS63001 TPS63002SLVS520MARCH 2006These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.AVAILABLE OUTPUT VOLTAGE OPTIONS(1)OUTPUT VO
11、LTAGEPACKAGETAPACKAGEPART NUMBER(2)DC/DCMARKINGAdjustableBNQTPS63000DRC40C to 85C3.3 VBNR10-Pin QFNTPS63001DRC5.0 VBNSTPS63002DRC(1)Contact the factory to check availability of other fixed output voltage versions. (2)The DRC package is available taped and reeled. Add R suffix to device type (e.g., T
12、PS63000DRCR) to order quantities of 3000 devices per reel.over operating free-air temperature range (unless otherwise noted)(1)TPS6300xInput voltage range on VBAT, L1, L2, VOUT, PS, EN, FB-0.3 V to 7 VOperating virtual junction temperature range, TJ-40C to 150CStorage temperature range Tstg-65C to 1
13、50C(1)Stresses beyond those listed under “absolute maximum ratings“ may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions“ is not implied. Exposur
14、e to absolute-maximum-rated conditions for extended periods may affect device reliability.THERMAL RESISTANCEPOWER RATINGDERATING FACTOR ABOVEPACKAGEJATA 25CTA= 25CDRC48.7 C/W2054 mW21 mW/CMINNOMMAX UNITSupply voltage at VBAT, VI1.85.5VOperating free air temperature range, TA-4085COperating virtual j
15、unction temperature range, TJ-40125C2Submit Documentation FELECTRICAL CHARACTERISTICSTPS63000 TPS63001 TPS63002SLVS520MARCH 2006over recommended free-air temperature range and over recommended input voltage range (typical at an ambient temperature range of 25C) (unless otherwise noted)DC/DC STAGEPAR
16、AMETERTEST CONDITIONSMINTYPMAXUNITVIInput voltage range1.85.5VVIInput voltage range for startup1.95.5VVOTPS63000 output voltage range1.25.5VVFBTPS63000 feedback voltage495500505mVfOscillator frequency12501500kHzFrequency range for12501800kHzsynchronizationISWSwitch current limitVIN= VINA= 3.6 V, TA= 25C160018002000mAHigh side switch on resistanceVIN= VINA= 3.6 V100mLow side switch on resistanceVIN=
