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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TPS5110PW датащи(PDF) 1 Page - Texas Instruments |
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TPS5110PW датащи(HTML) 1 Page - Texas Instruments |
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1 / 43 page  TPS5110 SLVS025B − APRIL 2002 − REVISED JULY 2004 SYNCHRONOUSBUCK PWM CONTROLLER WITH NMOS LDO CONTROLLER 1 www.ti.com FEATURES D Switching Mode Step-Down dc-to-dc Controller With Fast LDO Controller D Input Voltage Range Switcher: 4.5 V to 28 V LDO: 1.1 V to 3.6 V D Output Voltage Range Switcher: 0.9 V to 3.5 V LDO: 0.9 V to 2.5 V D Synchronous for High Efficiency D Precision VREF (±1 %) D PWM Mode Control: Max. 500-kHz Operation D High-Speed Error Amplifier D Overcurrent Protection With Temperature Compensation Circuit D Overvoltage and Undervoltage Protection D Programmable Short-Circuit Protection APPLICATIONS D Notebook PCs, PDAs D Consumer Game Systems D DSP Application SIMPLIFIED APPLICATION DESCRIPTION The TPS5110 provides one PWM-mode synchronous buck regulator controller (SBRC) and one low drop-out (LDO) regulator controller. The TPS5110 supports a low-voltage/high-current power supply for I/O and other peripherals in modern digital systems. The SBRC of the TPS5110 automatically adjusts from PWM mode to SKIP mode to maintain high efficiency under all load conditions. The LDO controller drives an external N-channel power MOSFET that realizes fast response and ultra-low dropout voltage. A unique overshoot protection circuit prevents a voltage hump at fast load decreasing transients. The current protection circuit for SBRC detects the drain-to-source voltage drop across the low-side and high-side power MOSFET while it is conducting. Also, the current protection circuit has a temperature coefficient to compensate for the RDS(on) variation of the MOSFET. This resistor-less current protection simplifies the system design and reduces the external parts count. The LDO controller includes current-limit protection. Other features, such as undervoltage lockout, power good, overvoltage, undervoltage, and programmable short-circuit protection promote system reliability. t− time 100 µs/div IOUT = 0 A to 3 A (1 A/ div) COUT = 47 µF VOUT = 1.5 V (50 mV/ div) LDO Load Transient Response UDG-02052 1 INV 6 GND 12 INV_LDO 24 23 17 LH OUT_u REG5V_IN 22 21 LL OUT_d 16 15 LDO_IN LDO_CUR 14 13 LDO_GATE LDO_OUT TPS5110PW VIN VO1 5 V INPUT VO2 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. Copyright 2002, Texas Instruments Incorporated |
Аналогичный номер детали - TPS5110PW |
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Аналогичное описание - TPS5110PW |
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