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| (R) LD2980 SERIES VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT s s s s s s s s s s s s ULTRA LOW DROPOUT VOLTAGE (0.12V TYP. AT 50mA LOAD) VERY LOW QUIESCENT CURRENT (MAX 1A IN OFF MODE; TYP. 375A AT 50mA LOAD) OUTPUT CURRENT UP TO 50 mA LOGIC-CONTROLLED ELECTRONIC SHUTDOWN OUTPUT VOLTAGES OF 2.85; 3.0; 3.2; 3.3; 3.8; 4.85; 5.0V INTERNAL CURRENT AND THERMAL LIMIT AVAILABLEIN 0.5% TOLLERANCE (AT 25oC, A VERSION) SUPPLY VOLTAGE REJECTION: 63dB (TYP) ONLY 1F FOR STABILITY TEMPERATURE RANGE: -40 TO 125 oC SMALLEST PACKAGES SOT23-5L AND SOT-89 FAST DYNAMIC RESPONSE TO LINE AND LOAD CHANGES SOT23-5L SOT-89 DESCRIPTION The LD2980 series are very Low Drop regulators available in SOT23-5L and SOT-89 packages. The ultra low drop-voltage and the very low quiescent current make them particularly suitable for low noise, low power applications and in battery powered systems. Shutdown Logic Control function is available on pin n. 3 (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. SCHEMATIC DIAGRAM April 2000 1/11 LD2980 ABSOLUTE MAXIMUM RATING Symbol V IN V I NH Io P tot T st g T op DC Input Voltage INHBIT Input Voltage Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter Value 16 16 Internally limited Internally limited - 55 to 150 - 40 to 125 Unit V V mA mW o o C C THERMAL DATA Symbol Parameter SOT-89 15 SOT23-5L 81 Unit o R thj- ca se Thermal Resistance Junction-case C/W CONNECTION DIAGRAM (top view) SOT23-5L SOT-89 (*) Inhibit pin is not internally pulled-up then it must not be left floating. Disable the device when connected to GND or to a positive voltage less than 0.18V ORDERING NUMBERS AB VERSION SO T23-5L LD2980ABM28TR LD2980ABM30TR LD2980ABM32TR LD2980ABM33TR LD2980ABM38TR LD2980ABM48TR LD2980ABM50TR SOT-89 LD2980ABU28TR LD2980ABU30TR LD2980ABU32TR LD2980ABU33TR LD2980ABU38TR LD2980ABU48TR LD2980ABU50TR SOT23-5L LD2980CM28TR LD2980CM30TR LD2980CM32TR LD2980CM33TR LD2980CM38TR LD2980CM48TR LD2980CM50TR C VERSION SO T-89 LD2980CU28TR LD2980CU30TR LD2980CU32TR LD2980CU33TR LD2980CU38TR LD2980CU48TR LD2980CU50TR 2.85 V 3.0 V 3.2 V 3.3 V 3.8 V 4.85 V 5.0 V Output Voltage APPLICATION CIRCUIT 2/11 LD2980 ELECTRICAL CHARACTERISTICS FOR LD2980AB (refer to the test circuits, T J = 25 oC, VIN = VO(NOM) +1, CO = 1 F, IO = 1mA, Vinh = 2V, unless otherwise specified) Symbol Vo Parameter Output Voltage Test Conditions VIN = 3.85 V 1 < Io < 50 mA 1 < Io < 50 mA, VIN = 4 V 1 < Io < 50 mA 1 < Io < 50 mA, VIN = 4.2 V 1 < Io < 50 mA 1 < Io < 50 mA, VIN = 4.3 V 1 < Io < 50 mA, 1 < Io < 50 mA, VIN = 4.8 V 1 < Io < 50 mA, 1 < Io < 50 mA, VIN = 5.85 V 1 < Io < 50 mA, 1 < Io < 50 mA, VIN = 6 V 1 < Io < 50 mA, 1 < Io < 50 mA, RL = 0 VO(NOM) +1 < VIN < 16V, -40 < TJ < 125 oC ON MODE Io = 0 mA Io = 0 mA Io = 1 mA Io = 1 mA Io = 10 mA Io = 10 mA Io = 50 mA Io = 50 mA Io = 1 mA Min. 2.835 2.828 2.778 2.985 2.977 2.925 3.184 3.175 3.12 3.283 3.275 3.217 3.781 3.771 3.705 4.825 4.813 4.729 4.975 4.962 4.875 150 0.003 0.014 0.032 95 125 110 170 220 460 600 1200 Typ. 2.85 Max. 2.865 2.872 2.922 3.015 3.023 3.075 3.216 3.225 3.28 3.317 3.325 3.383 3.819 3.829 3.895 4.875 4.887 4.971 5.025 5.038 5.125 Unit V V V V V V V V V V V V V V V V V V V V V mA %/V in -40 < TJ < 125 oC Vo Output Voltage 3 -40 < TJ < 125 oC Vo Output Voltage 3.2 -40 < TJ < 125 oC Vo Output Voltage 3.3 -40 < TJ < 125 oC Vo Output Voltage 3.8 -40 < TJ < 125 oC Vo Output Voltage 4.85 -40 < TJ < 125 oC Vo Output Voltage 5 -40 < TJ < 125 oC I o ut V o Id Output Current Limit Line Regulation Quiescent Current 65 -40 < TJ < 125 oC 80 -40 < TJ < 125 oC 140 -40 < TJ < 125 oC 375 -40 < TJ < 125 oC 0 A A A A A A A A A A dB mV mV mV mV mV mV mV mV V V A A V OFF MODE VINH < 0.18 V o VINH < 0.18 V -40 < TJ < 125 C SVR Vd Supply Voltage Rejection Dropout Voltage f = 1 KHz, Cout = 10 F Io = 0 mA Io = 0 mA Io = 1 mA Io = 1 mA Io = 10 mA Io = 10 mA Io = 50 mA Io = 50 mA -40 < TJ < 125 oC 1 63 1 7 3 5 10 15 60 90 150 225 0.18 2 0 5 160 -1 15 -40 < TJ < 125 oC 40 -40 < TJ < 125 oC 120 -40 < TJ < 125 oC -40 < TJ < 125 C o V il V ih Ii eN Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage (RMS) LOW = Output OFF -40 < TJ < 125 oC HIGH = Output ON VINH = 0 V VINH = 5 V, -40 < TJ < 125 oC BW = 300 Hz to 50 KHz, Cout = 10 F 3/11 LD2980 ELECTRICAL CHARACTERISTICS FOR LD2980C (refer to the test circuits, T J = 25 oC, VIN = VO(NOM) +1, CO = 1 F, IO = 1mA, Vinh = 2V, unless otherwise specified) Symbol Vo Parameter Output Voltage Test Conditions VIN = 3.85 V 1 < Io < 50 mA 1 < Io < 50 mA, VIN = 4 V 1 < Io < 50 mA 1 < Io < 50 mA, VIN = 4.2 V 1 < Io < 50 mA 1 < Io < 50 mA, VIN = 4.3 V 1 < Io < 50 mA, 1 < Io < 50 mA, VIN = 4.8 V 1 < Io < 50 mA, 1 < Io < 50 mA, VIN = 5.85 V 1 < Io < 50 mA, 1 < Io < 50 mA, VIN = 6 V 1 < Io < 50 mA, 1 < Io < 50 mA, RL = 0 VO(NOM) +1 < VIN < 16V, -40 < TJ < 125 oC ON MODE Io = 0 mA Io = 0 mA Io = 1 mA Io = 1 mA Io = 10 mA Io = 10 mA Io = 50 mA Io = 50 mA Io = 1 mA Min. 2.821 2.807 2.750 2.970 2.955 2.895 3.168 3.152 3.088 3.267 3.250 3.184 3.762 3.743 3.667 4.800 4.777 4.680 4.950 4.925 4.825 150 0.003 0.014 0.032 95 125 110 170 220 460 600 1200 Typ. 2.85 Max. 2.879 2.893 2.950 3.030 3.045 3.105 3.232 3.248 3.312 3.333 3.350 3.416 3.838 3.857 3.933 4.900 4.923 5.020 5.050 5.075 5.175 Unit V V V V V V V V V V V V V V V V V V V V V mA %/V in -40 < TJ < 125 oC Vo Output Voltage 3 -40 < TJ < 125 oC Vo Output Voltage 3.2 -40 < TJ < 125 oC Vo Output Voltage 3.3 -40 < TJ < 125 oC Vo Output Voltage 3.8 -40 < TJ < 125 oC Vo Output Voltage 4.85 -40 < TJ < 125 oC Vo Output Voltage 5 -40 < TJ < 125 oC I o ut V o Id Output Current Limit Line Regulation Quiescent Current 65 -40 < TJ < 125 oC 80 -40 < TJ < 125 oC 140 -40 < TJ < 125 oC 375 -40 < TJ < 125 oC 0 A A A A A A A A A A dB mV mV mV mV mV mV mV mV V V A A V OFF MODE VINH < 0.18 V o VINH < 0.18 V -40 < TJ < 125 C SVR Vd Supply Voltage Rejection Dropout Voltage f = 1 KHz, Cout = 10 F Io = 0 mA Io = 0 mA Io = 1 mA Io = 1 mA Io = 10 mA Io = 10 mA Io = 50 mA Io = 50 mA -40 < TJ < 125 oC 1 63 1 7 3 5 10 15 60 90 150 225 0.18 2 0 5 160 -1 15 -40 < TJ < 125 oC 40 -40 < TJ < 125 oC 120 -40 < TJ < 125 oC -40 < TJ < 125 C o V il V ih Ii eN Control Input Logic Low Control Input Logic High Control Input Current Output Noise Voltage (RMS) LOW = Output OFF -40 < TJ < 125 oC HIGH = Output ON VINH = 0 V VINH = 5 V, -40 < TJ < 125 oC BW = 300 Hz to 50 KHz, Cout = 10 F 4/11 LD2980 TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified TJ=25oC, CIN=COUT=1F) Output Voltage vs Temperature Output Voltage vs Temperature Output Voltage vs Input Voltage Output Voltage vs Input Voltage Line Regulation vs Temperature Dropout Voltage vs Temperature 5/11 LD2980 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Dropout Voltage vs Output Current Quiescent Current vs Temperature Quiescent Current vs Output Current S.V.R. vs Frequency S.V.R. vs Temperature S.V.R. vs Output Current 6/11 LD2980 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Stability Reverse Current vs Reverse Voltage Output Voltage vs Inhibit Voltage Inhibit Current vs Temperature Supply Voltage Rejection at VOUT = 2.85V Supply Voltage Rejection at VOUT = 5V VIN = 7.35 2.5V, IOUT = 50mA, f=1KHz VIN = 9 2.5V, IOUT = 50mA, f=1KHz 7/11 LD2980 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Line Transient Response Line Transient Response VCC = 5V, IOUT = 1 to 50mA, COUT = 10F, CIN = 150nF (ESR=1 at 1KHz) VCC = 5V, IOUT = 50 to 1mA, C OUT = 10F, CIN = 150nF (ESR=1 at 1KHz) Line Transient Response Line Transient Response VCC = 4.75 to 5.25V, IOUT = 0.05A, C OUT = 10F, CIN = 150nF (ESR=1 at 1KHz) VCC = 5.25 to 6.25V, IOUT = 0.05A, COUT = 10F, CIN = 150nF (ESR=1 at 1KHz) Supply Boltage Rejection VOUT = 5V, VIN = 6V, VINH = 0 to 5V, C IN = COUT = 1 F (Tant.) 8/11 LD2980 SOT-89 MECHANICAL DATA mm MIN. A B B1 C C1 D D1 E e e1 H L 1.4 0.44 0.36 0.35 0.35 4.4 1.62 2.29 1.42 2.92 3.94 0.89 TYP. MAX. 1.6 0.56 0.48 0.44 0.44 4.6 1.83 2.6 1.57 3.07 4.25 1.2 MIN. 55.1 17.3 14.2 13.8 13.8 173.2 63.8 90.2 55.9 115.0 155.1 35.0 mils TYP. MAX. 63.0 22.0 18.9 17.3 17.3 181.1 72.0 102.4 61.8 120.9 167.3 47.2 DIM. P025H 9/11 LD2980 SOT23-5L MECHANICAL DATA mm MIN. A A1 A2 b C D E E1 L e e1 0.90 0.00 0.90 0.35 0.09 2.80 2.60 1.50 0.35 0.95 1.9 TYP. MAX. 1.45 0.15 1.30 0.50 0.20 3.00 3.00 1.75 0.55 MIN. 35.4 0.0 35.4 13.7 3.5 110.2 102.3 59.0 13.7 37.4 74.8 mils TYP. MAX. 57.1 5.9 51.2 19.7 7.8 118.1 118.1 68.8 21.6 DIM. 10/11 LD2980 Information furnished is believed to be accurate and reliable. However, STMicroelectronic s 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. Specification 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 withoutexpress written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2000 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com . 11/11 |
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