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LP3906SQ-JXXI Datasheet(PDF) 5 Page - Texas Instruments |
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LP3906SQ-JXXI Datasheet(HTML) 5 Page - Texas Instruments |
5 / 47 page LP3906 www.ti.com SNVS456M – AUGUST 2006 – REVISED MAY 2013 Pin Descriptions(1) Pin Name Pin No. I/O Type Description VIN2 1 I PWR Power in from either DC source or Battery to Buck 2 SW2 2 O PWR Buck2 switcher output pin GND_SW2 3 G G Buck2 NMOS Power Ground GND_C 4 G G Non switching core ground pin GND_SW1 5 G G Buck1 NMOS Power Ground SW1 6 O PWR Buck1 switcher output pin VIN1 7 I PWR Power in from either DC source or Battery to buck 1 SDA 8 I/O D I2C Data (Bidirectional) SCL 9 I D I2C Clock EN_T 10 I D Enable for preset power on sequence. FB1 11 I A Buck1 input feedback terminal AVDD 12 I PWR Analog Power for Buck converters. VINLDO1 13 I PWR Power in from either DC source or Battery to input terminal of LDO1 LDO1 14 O PWR LDO1 Output ENLDO1 15 I D LDO1 enable pin, a logic HIGH enables the LDO1 ENLDO2 16 I D LDO2 enable pin, a logic HIGH enables the LDO2 GND_L 17 G G LDO Ground LDO2 18 O PWR LDO2 Output VINLDO2 19 I PWR Power in from either DC source or battery to input terminal to LDO2 VinLDO12 20 I PWR Analog Power for Internal Functions (VREF, BIAS, I2C, Logic) FB2 21 I A Buck2 input feedback terminal ENSW1 22 I D Enable Pin for Buck1 switcher, a logic HIGH enables Buck1 SYNC 23 I D Frequency Synchronization pin which allows the user to connect an external clock signal PLL to synchronize the PMIC internal oscillator. ENSW2 24 I D Enable Pin for Buck2 switcher, a logic HIGH enables Buck2 DAP DAP GND GND Connection isn't necessary for electrical performance, but it is recommended for better thermal dissipation. (1) A: Analog Pin D: Digital Pin G: Ground Pin PWR: Power Pin I: Input Pin I/O: Input/Output Pin O: Output Pin These 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. Copyright © 2006–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LP3906 |
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