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TPS65950 Datasheet(PDF) 49 Page - Texas Instruments |
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TPS65950 Datasheet(HTML) 49 Page - Texas Instruments |
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49 / 166 page  4.1.7 VMMC1 LDO Regulator TPS65950 Integrated Power Management/Audio Codec www.ti.com SWCS032A – OCTOBER 2008 – REVISED DECEMBER 2008 The VMMC1 LDO regulator is a programmable linear voltage converter that powers the multimedia channel (MMC) slot. It includes a discharge resistor and overcurrent (short -ircuit) protection. This LDO regulator can also be turned off automatically when MMC card extraction is detected. The VMMC1 LDO can be powered through an independent supply other than the battery; for example, a charge pump (CP). In this case, the input from the VMMC1 LDO can be higher than the battery voltage. Table 4-8 lists the characteristics of the regulator. Table 4-8. VMMC1 LDO Regulator Characteristics Parameter Test Conditions Min Typ Max Unit Output Load Conditions Filtering capacitor Connected from VMMC1.OUT to analog ground 0.3 1 2.7 µF Filtering capacitor ESR 20 600 m Ω Electrical Characteristics VIN Input voltage 2.7 3.6 5.5 V 1.7945 1.85 1.9055 2.7645 2.85 2.9355 VOUT Output voltage On mode and low-power mode V 2.91 3.0 3.09 3.0555 3.15 3.2445 On mode 220 IOUT Rated output current mA Low-power mode 5 dc load regulation On mode: 0 < IO < IMax 20 mV dc line regulation On mode, VIN = VINmin to VINmax at IOUT = IOUTmax 3 mV Turn-on time IOUT = 0, CL = 1 µF (within 10% of VOUT) 100 µs Wake-up time Full load capability 10 µs f < 10 kHz 50 10 kHz < f < 100 kHz 40 Ripple rejection dB f = 1 MHz 25 VIN = VOUT + 1 V, IO = IMax On mode, IOUT = 0 70 On mode, IOUT = IOUTmax 290 Ground current Low-power mode, IOUT = 0 17 µA Low-power mode, IOUT = 5 mA 20 Off mode at 55 °C 1 VDO Dropout voltage On mode, IOUT = IOUTmax 250 mV ILoad: IMin – IMax Transient load regulation –40 40 mV Slew: 40 mA/ µs VIN drops 500 mV Transient line regulation 10 mV Slew: 40 mV/ µs Submit Documentation Feedback Power Module 49 |
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