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RE023 Fiches technique(PDF) 1 Page - ATMEL Corporation |
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RE023 Fiches technique(HTML) 1 Page - ATMEL Corporation |
1 / 9 page 1 Features • Low-noise Low Drop Out Voltage Regulator • 2.6V Fixed Output Voltage • 3V to 5.5V Supply Operation • 160 mA Maximum Load Current • Less Than 46 µA (max) Quiescent Current • Power-down Mode Consumption Less Than 1 µA • More Than 60 dB (Typical) PSRR at 1 kHz • 68µ V RMS Output Noise • 0.35 µm CMOS Technology • Typical Application: Baseband Section Supply in Mobile Terminals Description RE023 is a Low Drop Out (LDO) voltage regulator macrocell with a fixed 2.6V output voltage, rated for loads up to 160 mA. It is designed to be integrated with other analog cells, digital logic, microcontrollers, DSP cores and memory blocks into system-on- chip products. The circuit consists of a PMOS pass device, an error amplifier and a feedback resis- tive network, sized to achieve the required closed loop gain. These blocks make up the regulating loop. An over-current and short circuit protection circuit has been included to limit the output current delivered by the regulator, thus avoiding destruction in case of a short circuit. An external reference voltage (bandgap voltage) is necessary for correct functionality. The target reference voltage is 1.231V, delivered, for example, by BG019. Double pads on the supply voltage V BAT2B/VBAT2BB and output voltage VANINTA/VANINTAA are used to reduce the total output resistance. Current reference is generated inside the cell through a circuit supplied by a 2.5V ± 0.1V regulated input voltage on V SAUVC. Remote sense terminal V ANINTS provides regulation at the load by connecting it to the output terminal near a critical point to improve performance of the regulator (e.g., con- necting them at the package pin by double-bonding, thus avoiding the bonding resistance influence). A ceramic capacitor of 2.2 µF connected from V ANINTA/VANINTAA to ground is needed as external compensation. Figure 1. Symbol(1) Note: 1. Pin names are written as they appear on the user screen when the symbol is opened in the design tool environment. vsauvc vbg on1 vanintc vbat2b vbat2bb vaninta vanintaa vanints gnd2 Embedded ASIC Macrocell: Power Management for Mobile Terminals (PM) RE023 Fixed 2.6V 160 mA LDO Voltage Regulator Rev. 2702B-PMGMT–02/03 |
Numéro de pièce similaire - RE023 |
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Description similaire - RE023 |
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