LD2980ABM28TR

Manufacturer Part NumberLD2980ABM28TR
DescriptionVERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE
ManufacturerSTMICROELECTRONICS [STMicroelectronics]
LD2980ABM28TR datasheet
 
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ULTRA LOW DROP VOLTAGE REGULATORS WITH INHIBIT
LOW ESR OUTPUT CAPACITORS COMPATIBLE
STABLE WITH LOW ESR CERAMIC
CAPACITORS
ULTRA LOW DROPOUT VOLTAGE (0.12V
TYP. AT 50mA LOAD, 7mV TYP. AT 1mA
LOAD)
VERY LOW QUIESCENT CURRENT (80µA
TYP. AT NO LOAD IN ON MODE; MAX 1µA
IN OFF MODE)
GUARANTEED OUTPUT CURRENT UP TO
50mA
LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
OUTPUT VOLTAGE OF 1.5; 1.8; 2.5; 2.85;
3.0; 3.2; 3.3; 3.6; 3.8; 4.0; 4.7; 4.85; 5.0V
INTERNAL CURRENT AND THERMAL LIMIT
± 0.5% TOLERANCE OUTPUT VOLTAGE
AVAILABLE (A VERSION)
OUTPUT LOW NOISE VOLTAGE 160µVRMS
TEMPERATURE RANGE: -40 TO 125°C
SMALLEST PACKAGE SOT23-5L AND
SOT-89
FAST DYNAMIC RESPONSE TO LINE AND
LOAD CHANGES
DESCRIPTION
The LD2980 series are 50mA fixed-output voltage
regulator. The low drop-voltage and the ultra low
SCHEMATIC DIAGRAM
September 2003
SOT23-5L
quiescent current make them suitable for low
noise, low power applications and in battery
powered systems.
The quiescent current in sleep mode is less than
1µA when INHIBIT pin is pulled low. 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. The LD2980 is designed to
work with low ESR ceramic capacitor. Typical
applications are in cellular phone, palmtop/laptop
computer,
personal
digital assistant
personal stereo, camcorder and camera.
LD2980
SERIES
SOT-89
(PDA),
1/17

LD2980ABM28TR Summary of contents

  • Page 1

    ULTRA LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE STABLE WITH LOW ESR CERAMIC CAPACITORS ULTRA LOW DROPOUT VOLTAGE (0.12V TYP. AT 50mA LOAD, 7mV TYP. AT 1mA LOAD) VERY LOW QUIESCENT CURRENT (80µA TYP ...

  • Page 2

    LD2980 SERIES ABSOLUTE MAXIMUM RATINGS Symbol V DC Input Voltage I V INHIBIT Input Voltage INH I Output Current O P Power Dissipation D T Storage Temperature Range STG T Operating Junction Temperature Range OP Absolute Maximum Ratings are those ...

  • Page 3

    ... ORDERING CODES AB VERSION SOT23-5L LD2980ABM25TR LD2980ABU25TR LD2980ABM28TR LD2980ABU28TR LD2980ABM30TR LD2980ABU30TR LD2980ABM32TR LD2980ABU32TR LD2980ABM33TR LD2980ABU33TR LD2980ABM36TR LD2980ABU36TR LD2980ABM38TR LD2980ABU38TR LD2980ABM40TR LD2980ABU40TR LD2980ABM47TR LD2980ABU47TR LD2980ABM48TR LD2980ABU48TR LD2980ABM50TR LD2980ABU50TR TYPICAL APPLICATION CIRCUIT (*) Inhibit Pin is not internally pulled-up then it must not be left floating. Disable the device when connected to GND positive voltage less than 0 ...

  • Page 4

    LD2980 SERIES ELECTRICAL CHARACTERISTICS FOR LD2980AB ( 2.2 F(X7R 1mA Symbol Parameter V Operating Input Voltage OP V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O ...

  • Page 5

    Symbol Parameter I Quiescent Current Q ON MODE OFF MODE V Dropout Voltage (NOTE 1) DROP I Short Circuit Current SC SVR Supply Voltage Rejection V Inhibit Input Logic Low INH V Inhibit Input Logic High INL I Inhibit Input ...

  • Page 6

    LD2980 SERIES ELECTRICAL CHARACTERISTICS FOR LD2980C ( 2.2 F(X7R 1mA Symbol Parameter V Operating Input Voltage OP V Output Voltage O V Output Voltage O V Output Voltage O V Output Voltage O ...

  • Page 7

    Symbol Parameter V Line Regulation O I Quiescent Current Q ON MODE OFF MODE V Dropout Voltage (NOTE 1) DROP I Short Circuit Current SC SVR Supply Voltage Rejection V Inhibit Input Logic Low INH V Inhibit Input Logic High ...

  • Page 8

    LD2980 SERIES TYPICAL PERFORMANCE CHARACTERISTICS ( 2.2 F(X7R 2V, unless otherwise specified) O INH Figure 1 : Output Voltage vs Temperature Figure 2 : Output Voltage vs Temperature Figure 3 : Line Regulation vs Temperature 8/17 ...

  • Page 9

    Figure 7 : Quiescent Current vs Output Current Figure 8 : OFF MODE Quiescent Current vs Temperature Figure 9 : Quiescent Current vs Input Voltage Figure 10 : Dropout Voltage vs Output Current Figure 11 : Inhibit Input Current vs ...

  • Page 10

    LD2980 SERIES Figure 13 : Supply Voltage Rejection vs Frequency Figure 14 : Noise Voltage vs Frequency Figure 15 : Best Case: Highest Output Version 10/17 Figure 16 : Worst Case: Lowest Output Version Figure 17 : Load Transient Response ...

  • Page 11

    APPLICATION NOTES EXTERNAL CAPACITORS Like any low-dropout regulator, the LD2980 requires external capacitors for regulator stability. This capacitor must be selected to meet the requirements of minimum capacitance and equivalent series resistance. We suggest to solder input and output capacitors ...

  • Page 12

    LD2980 SERIES Figure 19 : Reverse Current Test Circuit 12/17 ...

  • Page 13

    SOT23-5L MECHANICAL DATA DIM. MIN. A 0.90 A1 0.00 A2 0.90 b 0.35 C 0.09 D 2. 2.60 L 0.10 mm. TYP MAX. MIN. 1.45 0.10 1.30 0.50 0.20 3.00 110.2 1.75 0.95 3.00 102.3 0.60 ...

  • Page 14

    LD2980 SERIES DIM. MIN. 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 14/17 SOT-89 MECHANICAL DATA mm. TYP MAX. 1.6 0.56 0.48 0.44 0.44 ...

  • Page 15

    Tape & Reel SOT23-xL MECHANICAL DATA DIM. MIN 12 3.13 Bo 3.07 Ko 1.27 Po 3.9 P 3.9 mm. TYP MAX. MIN. 180 13.0 13.2 0.504 0.795 2.362 14.4 3.23 3.33 0.123 ...

  • Page 16

    LD2980 SERIES Tape & Reel SOT89 MECHANICAL DATA DIM. MIN 12 4.70 Bo 4.30 Ko 1.70 Po 3.9 P 7.9 16/17 mm. TYP MAX. MIN. 180 13.0 13.2 0.504 0.795 2.362 14.4 ...

  • Page 17

    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. ...