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30 mA flash LDO voltage regulator (output voltage 1.8 V)
The voltage regulator consists of a differential amplifier, pass transistor and resistor's divider. Differential amplifier compares reference voltage with voltage from a feedback divider and adjusts the impedance of a PMOS transistor for stabilization of output voltage at a set level. The output voltage adjustment is defined by the trimming code trim<5:0>. The block has low supply current and allows high current load.
The LDO can operate in two modes: “Normal” and “Economy”. “Economy” mode is introduced to save battery power. Although the mode may handle full current load, it has slower reactions on load current change. “Normal” mode is a default LDO mode with minimum response time on load change.
“Bypass” mode is a LDO mode of the pass transistor with minimum channel resistance, independently of the output signal of the differential amplifier.
The block is designed on Global Foundries CMOS 55 nm technology.
The LDO can operate in two modes: “Normal” and “Economy”. “Economy” mode is introduced to save battery power. Although the mode may handle full current load, it has slower reactions on load current change. “Normal” mode is a default LDO mode with minimum response time on load change.
“Bypass” mode is a LDO mode of the pass transistor with minimum channel resistance, independently of the output signal of the differential amplifier.
The block is designed on Global Foundries CMOS 55 nm technology.
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