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TPS60123PWP Datasheet(PDF) 1 Page - Texas Instruments |
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TPS60123PWP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 27 page TPS60120, TPS60121, TPS60122, TPS60123, TPS60124, TPS60125 REGULATED 200-mA HIGH EFFICIENCY CHARGE PUMP DC/DC CONVERTERS SLVS257B – NOVEMBER 1999 – REVISED AUGUST 2000 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 features D High Average Efficiency Over Input Voltage Range Because of Special Switching Topology D Minimum 200-mA Output Current From an Input Voltage Range of 1.8-V to 3.6-V D Regulated 3.3-V or 3-V ±4% Output Voltage D No Inductors Required, Low EMI D Only Four External Components Required D 55-µA Quiescent Supply Current D 0.05-µA Shutdown Current D Load Disconnected in Shutdown D Integrated Low Battery and Power Good Detectors D Evaluation Module Available (TPS60120EVM-142) applications D Applications Powered by Two Battery Cells D Portable Instruments D Battery-Powered Microprocessor Systems D Miniature Equipment D Backup-Battery Boost Converters D PDAs, Organizers, Laptops D MP-3 Portable Audio Players D Handheld Instrumentation D Medical Instruments (e.g., Glucose Meters) D Cordless Phones · description The TPS6012x step-up, regulated charge pumps generate a 3.3-V or 3-V ±4% output voltage from a 1.8-V to 3.6-V input voltage (two alkaline, NiCd, or NiMH batteries). They can deliver an output current of at least 200 mA (100 mA for the TPS60122 and TPS60123), all from a 2-V input. Four external capacitors are needed to build a complete high efficiency dc/dc charge pump converter. To achieve the high efficiency over a wide input voltage range, the charge pump automatically selects between a 1.5x or doubler conversion mode. From a 2-V input, all ICs can start with full load current. The devices feature the power-saving pulse-skip mode to extend battery life at light loads. TPS60120, TPS60122, and TPS60124 include a low battery comparator. TPS60121, TPS60123, and TPS60125 feature a power-good output. The logic shutdown function reduces the supply current to a maximum of 1 µA and disconnects the load from the input. Special current-control circuitry prevents excessive current from being drawn from the battery during start-up. This dc/dc converter requires no inductors, therefore EMI is of low concern. It is available in the small, thermally enhanced 20-pin PowerPAD t package (PWP). IO = 66 mA 0 10 20 30 40 50 60 70 80 90 100 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 VI – Input Voltage – V IO = 164 mA IO = 216 mA IO = 116 mA VO = 3.3 V TC = 25°C IN IN LBI C1+ C1– ENABLE PGND GND OUT OUT FB LBO C2+ C2– CO 22 µF Ci 10 µF Output 3.3 V C2 2.2 µF C1 2.2 µF R1 R2 Input 1.8 V to 3.6 V OFF/ON efficiency (TPS60120, TPS60121) typical operating circuit R3 TPS60120 Copyright © 2000, Texas Instruments Incorporated 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. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. PowerPAD is a trademark of Texas Instruments Incorporated. |
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