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TPS65920BZCH Datasheet(PDF) 47 Page - Texas Instruments |
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TPS65920BZCH Datasheet(HTML) 47 Page - Texas Instruments |
47 / 114 page 4.4 Power Consumption TPS65930/TPS65920 Integrated Power Management \Audio Codec (TPS65930 Only) www.ti.com SWCS037D – MAY 2008 – REVISED JUNE 2009 Table 4-14. VRRTC LDO Regulator Characteristics (continued) Parameter Test Conditions Min Typ Max Unit IOUT Rated output current On mode 30 mA Sleep mode 1 DC load regulation On mode: IOUT = IOUTmax to 0 100 mV DC line regulation On mode, VIN = VINmin to VINmax at IOUT = IOUTmax 100 mV Turn-on time IOUT = 0, at VOUT = VOUTfinal ± 3% 100 µs Wake-up time On mode from low power to On mode, IOUT = 0, at 100 µs VOUT = VOUTfinal ± 3% From backup to On mode, IOUT = 0, at VOUT = 100 VOUTfinal ± 3% Ripple rejection (VRRTC) f < 10 kHz 50 dB 10 kHz < f < 100 kHz 40 f = 1 MHz 30 VIN = VOUT + 1 V, IO = IMAX Ground current On mode, IOUT = 0 70 µA On mode, IOUT = IOUTmax 100 Sleep mode, IOUT = 0 10 Sleep mode, IOUT = 1 mA 11 Off mode 1 VDO Dropout voltage(1) On mode, IOUT = IOUTmax 250 mV Transient load regulation ILOAD: IMIN – IMAX –40 40 mV Slew: 40 mA/ µs Transient line regulation VIN drops 500 mV 10 mV Slew: 40 mV/ µs Overshoot Softstart 3% Pull down resistance Default in off mode 250 320 450 Ω (1) For nominal output voltage Table 4-15 describes the power consumption depending on the use cases. NOTE Typical power consumption is obtained in the nominal operating conditions and with the TPS65920 and TPS65930 devices in stand-alone configuration. Table 4-15. Power Consumption Mode Description Typical Consumption Only the RTC date is maintained with a couple of registers in the backup Backup domain. No main source is connected. Consumption is on the backup VBAT not present 2.25 * 3.2 = 7.2 µW battery. The phone is apparently off for the user, a main battery is present and well-charged. The RTC registers and registers in the backup domain are Wait on VBAT = 3.8 V 64 × 3.8 = 243.2 µW maintained. The wake-up capabilities (such as the PWRON button) are available. The subsystem is powered by the main battery, all supplies are enabled Active no load with full current capability, internal reset is released, and the associated VBAT = 3.8 V 3291 × 3.8 = 12505 µW processor is running. The main battery powers the subsystem, selected supplies are enabled but Sleep no load in low-consumption mode, and the associated processor is in low-power VBAT = 3.8 V 496 × 3.8 = 1884.4 µW mode. Submit Documentation Feedback Power Module 47 |
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