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LDO51 Datasheet(PDF) 1 Page - STMicroelectronics |
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LDO51 Datasheet(HTML) 1 Page - STMicroelectronics |
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1/4 June 2002 IP Library: High PSRR, Low power, 80mA Low Dropout Voltage Regulator s ANALOG BASEBAND REGULATOR s VERY LOW DROPOUT VOLTAGE : 50mV s HIGH PSRR : 60dB s LOW QUIESCENT CURRENT : 130 µA s LOW OUTPUT VOLTAGE NOISE s NO CURRENT IN POWER DOWN MODE s SHORT CIRCUIT PROTECTION s SMALL DECOUPLING CERAMIC CAPACITOR TYPICAL APPLICATIONS – Cellular and Cordless phones supplied by 1 cell Lithium-ion battery / 3 cells Ni-MH or Ni-Cd battery. – PDA (Personal Digital Assistant), Smart phone. – Portable equipment. – Supply for Analog and Mixed-signal devices for cellular phone. APPLICATION NOTE An external capacitor (COUT = 1µF) with an equivalent serial resistance (ESR) in the range 0.02 to 0.6 Ω is used for regulator stability. Figure 1 : Block Diagram ? VREF ? ? LDO_51 OUT IN PWRDWN Figure 2 : Typical Application Circuit 1 µF ESR VOUT COUT ? ? OUT GND ? ? VIN IN Power Down Mode OFF ON LDO_51 PWRDWN LDO_51 This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice. PRODUCT PREVIEW |
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