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900844 bảng dữ liệu(PDF) 68 Page - Freescale Semiconductor, Inc |
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900844 bảng dữ liệu(HTML) 68 Page - Freescale Semiconductor, Inc |
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68 / 118 page  Analog Integrated Circuit Device Data 68 Freescale Semiconductor 900844 FUNCTIONAL DEVICE OPERATION POWER SUPPLIES LDO POWER SUPPLIES Freescale’s power management solution for the Ultra-mobile platform for Netbooks, Tablets, and Slates includes 14 LDO regulators, all of which are housed in the 900844 PMIC. LDO OPERATION MODES SELECTIONS • OFF - The regulator is switched off • ACTIVE - The regulator is switched on and the output is at the programmed level. The maximum load current is allowed. • LOW POWER - The regulator is switched on and the outputs is at the programmed level. The load current is limited. • TEST/TRIM - This is not a functional mode, thus requiring certain steps to prevent unintentional activation of this mode. During this mode, the device performs measurements and trimming. All LDOS are able to work in a low power mode, in which the bias current is reduced. The output drive capability and performance are limited in this mode. This mode occurs automatically when the load current decreases below the low power mode limit, except on VBG and VMM, in which this mode can only be set through SPI programming. All other LDOS can set the low power mode through SPI programming. Note: If low power mode is set through the SPI at a load current higher than the maximum allowed, the performance of the LDO is not guaranteed. Table 30 is a summary of LDO characteristics Table 30. 900844 LDO Power Supplies Summary Regulator Typ. Voltage Max Continuous Current Description VBG 1.25 V 2.0 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VCCA 1.5 V 150 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VCC180 1.8 V 390 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VPNL18 1.8 V 225 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VPMIC 1.8 V 50 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VYMXYFI18 1.8 V 200 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VCCPAOAC 1.05 V 155 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VCCPDDR 1.05 V 60 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VAON 1.2 V 250 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VMM 1.2 V 5.0 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VCCP 1.05 V 445 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VIMG25 2.5 V 80 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VIMG28 1.5 - 2.9 V 225 mA Low Dropout (LDO) fully integrated regulator with a P-CH Pass FET. It is high performance, low noise, and high PSRR with a low quiescent current and fast transient response. VSDIO 1.8 or 3.3 V 215 mA VSDIO is a combo Low Dropout (LDO) and power switch. It uses an external P-CH Pass FET, applicable only in power switch mode. VSDIO serves as an LDO when its output voltage is set to 1.8 V, and as a switch when its output voltage is set to 3.3 V. |
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