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TPS65014 Datasheet(PDF) 17 Page - Texas Instruments |
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TPS65014 Datasheet(HTML) 17 Page - Texas Instruments |
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17 / 53 page  www.ti.com APPLICATION INFORMATION SCL SDA VBAT ISET PG AC Adapter USB port SCLK SDAT TS VINMAIN L1 VMAIN VINCORE L2 VCORE VINLDO1 VLDO1 VLDO2 AGND PGND INT AC USB BATT− BATT+ TEMP CHARGER/REG INTERRUPT CHARGER POWER GOOD VCORE 1.5 V VMAIN 3.3 V VMAIN IFLSB GND/VCC nPOR RESET to MPU VFB_LDO1 LED2 VIB VCC RESPWRON MPU_RESET PWRFAIL Battery Fail, Battery Cover Removed, Over Temp. TPS65014 GND SCL SDA VBAT ISET PG AC Adapter USB port SCLK SDAT TS VINMAIN L1 VMAIN VINCORE L2 VCORE VINLDO1 VLDO1 VINLDO2 VLDO2 LOW_PWR AGND PGND INT AC USB BATT− BATT+ TEMP CHARGER/REG INTERRUPT CHARGER POWER GOOD VCORE 1.5 V VMAIN 3.3 V DEFCORE GND IFLSB GND/VCC DEFMAIN BATT_COVER PB_ONOFF nPOR RESET to MPU VFB_LDO1 LED2 VIB VCC PS_SEQ GND HOT_RESET RESPWRON MPU_RESET PWRFAIL Battery Fail, Battery Cover Removed, Over Temp. 22 µF X5R 10 µF X5R 10 µH 6.2 µH 22 µF X5R 1 µF X5R 10 R 2.2 µF X5R 2.2 µF X5R 1 µF X5R VBAT VBAT VBAT VBAT VBAT 1 µF X5R 1 µF X5R VMAIN 0.1 µF 0.1 µF 0.1 µF GPIO1 GPIO2 GPIO3 GPIO4 1 MW Each TPOR VBAT TPS65014 SLVS551 – DECEMBER 2004 Figure 25. Typical Application Circuit The VCORE and VMAIN converter are always enabled in a typical application. The VCORE output voltage can be disabled or reduced from 1.5 V to a lower, preset voltage under processor control. When the processor enters the sleep mode, a high signal on the LOW_PWR pin initiates the change. VCORE typically supplies the digital part of the audio codec. When the processor is in sleep or low power mode, the audio codec is powered off, so the VCORE voltage can be programmed to lower voltages without a problem. A typical audio codec (e.g., TI AIC23) consumes about 20-mA to 30-mA current from the VCORE power supply. 17 |
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