LD2980

Manufacturer Part NumberLD2980
DescriptionVERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT
ManufacturerST Microelectronics
LD2980 datasheet
 
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VOLTAGE REGULATORS WITH INHIBIT
ULTRA LOW DROPOUT VOLTAGE
(0.12V TYP. AT 50mA LOAD)
VERY LOW QUIESCENT CURRENT
(MAX 1 A IN OFF MODE; TYP. 375 A 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
o
25
C, A VERSION)
SUPPLY VOLTAGE REJECTION: 63dB (TYP)
ONLY 1 F FOR STABILITY
TEMPERATURE RANGE: -40 TO 125
SMALLEST PACKAGES SOT23-5L AND
SOT-89
FAST DYNAMIC RESPONSE TO LINE AND
LOAD CHANGES
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
SCHEMATIC DIAGRAM
April 2000
VERY LOW DROP
SOT23-5L
o
C
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.
LD2980
SERIES
SOT-89
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LD2980 Summary of contents

  • Page 1

    ... SMALLEST PACKAGES SOT23-5L AND SOT-89 FAST DYNAMIC RESPONSE TO LINE AND LOAD CHANGES 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 SCHEMATIC DIAGRAM April 2000 VERY LOW DROP ...

  • Page 2

    ... LD2980ABU32TR LD2980ABM33TR LD2980ABU33TR LD2980ABM38TR LD2980ABU38TR LD2980ABM48TR LD2980ABU48TR LD2980ABM50TR LD2980ABU50TR APPLICATION CIRCUIT 2/11 Parameter SOT- VERSION SOT23-5L SO T-89 LD2980CM28TR LD2980CU28TR LD2980CM30TR LD2980CU30TR LD2980CM32TR LD2980CU32TR LD2980CM33TR LD2980CU33TR LD2980CM38TR LD2980CU38TR LD2980CM48TR LD2980CU48TR LD2980CM50TR LD2980CU50TR Value Unit Internally limited mA Internally limited 150 C ...

  • Page 3

    ... ELECTRICAL CHARACTERISTICS FOR LD2980AB (refer to the test circuits + 1mA O(NOM Symbol Parameter V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o I Output Current Limit ...

  • Page 4

    ... LD2980 ELECTRICAL CHARACTERISTICS FOR LD2980C (refer to the test circuits + 1mA O(NOM Symbol Parameter V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o V Output Voltage o I Output Current Limit ...

  • Page 5

    ... TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T Output Voltage vs Temperature Output Voltage vs Input Voltage Line Regulation vs Temperature o = Output Voltage vs Temperature Output Voltage vs Input Voltage Dropout Voltage vs Temperature LD2980 = OUT 5/11 ...

  • Page 6

    ... LD2980 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Dropout Voltage vs Output Current Quiescent Current vs Output Current S.V.R. vs Temperature 6/11 Quiescent Current vs Temperature S.V.R. vs Frequency S.V.R. vs Output Current ...

  • Page 7

    ... TYPICAL PERFORMANCE CHARACTERISTICS (continued) Stability Output Voltage vs Inhibit Voltage Supply Voltage Rejection 2.85V OUT V = 7.35 2.5V 50mA, f=1KHz IN OUT Reverse Current vs Reverse Voltage Inhibit Current vs Temperature Supply Voltage Rejection OUT 2.5V 50mA, f=1KHz IN OUT LD2980 7/11 ...

  • Page 8

    ... LD2980 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Line Transient Response 50mA 150nF CC OUT OUT IN (ESR=1 at 1KHz) Line Transient Response V = 4.75 to 5.25V 0.05A OUT OUT (ESR=1 at 1KHz) Supply Boltage Rejection (Tant.) OUT ...

  • Page 9

    ... SOT-89 MECHANICAL DATA mm DIM. MIN. TYP. A 1.4 B 0.44 B1 0.36 C 0.35 C1 0.35 D 4.4 D1 1.62 E 2.29 e 1.42 e1 2.92 H 3.94 L 0.89 mils MAX. MIN. TYP. 1.6 55.1 0.56 17.3 0.48 14.2 0.44 13.8 0.44 13.8 4.6 173.2 1.83 63.8 2.6 90.2 1.57 55.9 3.07 115.0 4.25 155.1 1.2 35.0 LD2980 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 P025H 9/11 ...

  • Page 10

    ... LD2980 SOT23-5L MECHANICAL DATA mm DIM. MIN. TYP. A 0.90 A1 0.00 A2 0.90 b 0.35 C 0.09 D 2.80 E 2.60 E1 1.50 L 0.35 e 0.95 e1 10/11 MAX. MIN. 1.45 35.4 0.15 0.0 1.30 35.4 0.50 13.7 0.20 3.5 3.00 110.2 3.00 102.3 1.75 59.0 0.55 13.7 1.9 mils TYP. MAX. 57.1 5.9 51.2 19.7 7.8 118.1 118.1 68.8 21.6 37.4 74.8 ...

  • Page 11

    ... The ST logo is a registered trademark of STMicroelectronics 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 . LD2980 11/11 ...