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LP3910 Datasheet(PDF) 61 Page - Texas Instruments |
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LP3910 Datasheet(HTML) 61 Page - Texas Instruments |
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61 / 72 page  LP3910 47 45 41 42 46 VDD1 VDD2 VDD3 CHG_DET USBPWR 37 38 USBSUSP USBISEL 15 16 CHG STAT 43 VBATT3 44 2 VBATT2 VBATT1 1 TS VACDC_ADAPTER + - 26 ONOFF 5 LDO2EN 35 33 32 31 VBBL1 VBBL2 VBBOUT VBBFB 23 25 VBUCK2 VFB2 20 18 VBUCK1 VFB1 17 34 BBGND1 39 BBGND2 24 BCK2GND 19 BCK1GND 6 VLDO2 8 VLDO1 36 VIN4 22 VIN3 21 VIN2 7 VIN1 USB Controller D+ D- Battery VDD 5V_USB 10 ISENSE Audio Analog Touchpad SoC 28 VDDIO 30 ONSTAT 27 I2C_SCL 29 I2C_SDA 14 NRST 13 IRQB 9 POWERACK GPIO SCL SDA /RESET /IRQ GPIO GND VDDIO CPU SDRAM/DDR FLASH IO 1.2 V 3.1 V 3.3 V HDD BUCK1EN VDD 4 VREFH 48 IREF 3 40 DGND AGND 12 11 ADC2 ADC1 4.7 µF 4.7 µF 10 µF 1 µF 1 µF 1 µF 2.2 µH 2.2 µH 2.2 µH 22 µF 10 µF 10 µF 4.64 NŸ 121 NŸ 0.1 µF 4.7 µF 4.7 µF 22 k 1.8 k 1.8 k 22 k 22 k 10 µF 10 µF LP3910 www.ti.com SNVS481M – NOVEMBER 2006 – REVISED DECEMBER 2015 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The LP3910 is a programmable system power management unit optimized for HDD-based portable media players. The device is intended to connect to an AC-DC wall adapter or USB power source in addition to a lithium-Ion or lithium-polymer single-cell battery. The device can be configured over an I2C interface, or the default configuration stored in EPROM can be used. Additional features such as current and voltage measurements with the ADC or battery thermal monitoring can also be controlled via the I2C interface and interrupt pins. 9.2 Typical Application Figure 75. LP3910 Typical Application Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback 61 Product Folder Links: LP3910 |
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