LDO51 STMICROELECTRONICS | Alldatasheet
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LDO_51
ELECTRICAL CHARACTERISTICS
100µA < ILOAD < 80mA. Typical case : VIN = 4V , T = 25°C, IOUT = 40mA. Notes: 1. Above characteristics are given for 3V minimum input operating range voltage, but regulator is operational with 2.7V minimum input voltage. 2. All parameters are guaranteed with 170mV Dropout voltage. Parameter Symbol Test Condition Min Typ Max Unit Input Voltage Range (Note 1) V IN 3 5,5 V Output Voltage V OUT 2,8 V Output Voltage Accuracy -3 3 % Output current I OUT 0,1 80 mA PMOS Output Resistance R ON 0,5 Ω Dropout Voltage ΔVDO ΔVOUT = 50mV , ILOAD = 80mA 50 mV (Note 2) 170 Quiescent current I Q ILOAD = 100µA3 0 5 0 µA ILOAD = 80mA 130 170 Power down mode quiescent current IQPDM Power down active 100 nA Power Supply Rejection Ratio PSRR f < 10KHz 50 60 dB f < 100KHz 40 50 Line Regulation Lir I LOAD = 80mA, VIN = 3V to 5.1V 36 m V Load Regulation Ldr 30 45 mV Line T ransient Lirt ΔVIN = 300mV tRISE = tFALL = 10µs 1m V Load T ransient Ldtr 10% to 90% and 90% to 10% of 80mA in 10µs 1m V Output Noise Voltage en 100Hz 1,5 1KHz 550 100KHz 300 Output decoupling Capacitor C OUT 1 µF Settling time From power down to active mode 25 µs Short Circuit Current Limit I SHORT 180 230 300 mA µ V Hz nV Hz
LDO_51 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics © 2002 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States http://www.st.com 100 120 OUTPUT CURRENT (m A) CURRENT CONSUMPTION (µA) 0 . 0 2 0 . 11 02 03 04 05 06 07 08 0 Figure 9 : Current Consumption vs Output Current (VIN = 4V)