SGS Thomson Microelectronics LD2980CM48TR, LD2980CM38TR, LD2980CM33TR, LD2980CM32TR, LD2980ABM48TR Datasheet
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LD2980 |
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SERIES |
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VERY LOW DROP |
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VOLTAGE REGULATORS WITH INHIBIT |
■ULTRA LOW DROPOUT VOLTAGE (0.12V TYP. AT 50mA LOAD)
■VERY LOW QUIESCENT CURRENT (MAX 1μA IN OFF MODE; TYP. 375μA 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 1μF FOR STABILITY
■TEMPERATURE RANGE: -40 TO 125 oC
■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
SOT23-5L SOT-89
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 |
Parameter |
Value |
Unit |
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VIN |
DC Input Voltage |
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16 |
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V |
VI NH |
INHBIT Input Voltage |
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16 |
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V |
Io |
Output Current |
Internally |
limited |
mA |
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Ptot |
Power Dissipation |
Internally |
limited |
mW |
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Tst g |
Storage Temperature Range |
- 55 |
to |
150 |
o C |
Top |
Operating Junction Temperature Range |
- 40 |
to |
125 |
o C |
THERMAL DATA
Symbol |
Parameter |
SOT-89 |
SOT23-5L |
Unit |
Rthjca se |
Thermal Resistance Junction-case |
15 |
81 |
oC/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 |
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C VERSION |
Output Voltage |
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SOT23-5L |
SOT-89 |
SOT23-5L |
SOT-89 |
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LD2980ABM28TR |
LD2980ABU28TR |
LD2980CM28TR |
LD2980CU28TR |
2.85 V |
LD2980ABM30TR |
LD2980ABU30TR |
LD2980CM30TR |
LD2980CU30TR |
3.0 V |
LD2980ABM32TR |
LD2980ABU32TR |
LD2980CM32TR |
LD2980CU32TR |
3.2 V |
LD2980ABM33TR |
LD2980ABU33TR |
LD2980CM33TR |
LD2980CU33TR |
3.3 V |
LD2980ABM38TR |
LD2980ABU38TR |
LD2980CM38TR |
LD2980CU38TR |
3.8 V |
LD2980ABM48TR |
LD2980ABU48TR |
LD2980CM48TR |
LD2980CU48TR |
4.85 V |
LD2980ABM50TR |
LD2980ABU50TR |
LD2980CM50TR |
LD2980CU50TR |
5.0 V |
APPLICATION CIRCUIT
2/11
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LD2980 |
ELECTRICAL CHARACTERISTICS FOR LD2980AB (refer to the test circuits, TJ = 25 oC, |
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VIN = VO(NOM) +1, CO = 1 μF, IO = 1mA, Vinh = 2V, unless otherwise specified) |
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Symbol |
Parameter |
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Test Conditions |
Min. |
Typ. |
Max. |
Unit |
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Vo |
Output Voltage |
VIN = 3.85 V |
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2.835 |
2.85 |
2.865 |
V |
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1 |
< Io < 50 mA |
-40 < TJ < 125 oC |
2.828 |
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2.872 |
V |
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1 |
< Io < 50 mA, |
2.778 |
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2.922 |
V |
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Vo |
Output Voltage |
VIN = 4 V |
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2.985 |
3 |
3.015 |
V |
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1 |
< Io < 50 mA |
-40 < TJ < 125 oC |
2.977 |
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3.023 |
V |
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1 |
< Io < 50 mA, |
2.925 |
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3.075 |
V |
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Vo |
Output Voltage |
VIN = 4.2 V |
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3.184 |
3.2 |
3.216 |
V |
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1 |
< Io < 50 mA |
-40 < TJ < 125 oC |
3.175 |
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3.225 |
V |
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1 |
< Io < 50 mA, |
3.12 |
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3.28 |
V |
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Vo |
Output Voltage |
VIN = 4.3 V |
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3.283 |
3.3 |
3.317 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
3.275 |
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3.325 |
V |
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1 |
< Io < 50 mA, |
3.217 |
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3.383 |
V |
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Vo |
Output Voltage |
VIN = 4.8 V |
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3.781 |
3.8 |
3.819 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
3.771 |
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3.829 |
V |
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1 |
< Io < 50 mA, |
3.705 |
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3.895 |
V |
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Vo |
Output Voltage |
VIN = 5.85 V |
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4.825 |
4.85 |
4.875 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
4.813 |
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4.887 |
V |
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1 |
< Io < 50 mA, |
4.729 |
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4.971 |
V |
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Vo |
Output Voltage |
VIN = 6 V |
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4.975 |
5 |
5.025 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
4.962 |
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5.038 |
V |
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1 |
< Io < 50 mA, |
4.875 |
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5.125 |
V |
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Io ut |
Output Current Limit |
RL = 0 |
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150 |
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mA |
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Vo |
Line Regulation |
VO(NOM) +1 < VIN < 16V, Io = 1 mA |
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0.003 |
0.014 |
%/Vin |
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-40 < TJ < 125 oC |
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0.032 |
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Id |
Quiescent Current |
ON MODE |
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μA |
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Io = 0 mA |
-40 < TJ < 125 oC |
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65 |
95 |
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Io = 0 mA |
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125 |
μA |
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Io = 1 mA |
-40 < TJ < 125 oC |
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80 |
110 |
μA |
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Io = 1 mA |
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170 |
μA |
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Io = 10 mA |
-40< TJ < 125 oC |
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140 |
220 |
μA |
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Io = 10 mA |
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460 |
μA |
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Io = 50 mA |
-40< TJ < 125 oC |
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375 |
600 |
μA |
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Io = 50 mA |
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1200 |
μA |
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OFF MODE |
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μA |
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VINH < 0.18 V |
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-40 < TJ < 125 oC |
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0 |
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VINH < 0.18 V |
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1 |
μA |
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SVR |
Supply Voltage Rejection |
f = 1 KHz, Cout = 10 μF |
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63 |
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dB |
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Vd |
Dropout Voltage |
Io = 0 mA |
-40 < TJ < 125 oC |
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1 |
3 |
mV |
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Io = 0 mA |
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5 |
mV |
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Io = 1 mA |
-40 < TJ < 125 oC |
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7 |
10 |
mV |
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Io = 1 mA |
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15 |
mV |
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Io = 10 mA |
-40< TJ < 125 oC |
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40 |
60 |
mV |
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Io = 10 mA |
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90 |
mV |
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Io = 50 mA |
-40< TJ < 125 oC |
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120 |
150 |
mV |
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Io = 50 mA |
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225 |
mV |
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Vil |
Control Input Logic Low |
LOW = Output OFF |
-40 < TJ < 125 oC |
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0.18 |
V |
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Vih |
Control Input Logic High |
HIGH = Output ON |
-40 < TJ < 125 oC |
2 |
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V |
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Ii |
Control Input Current |
VINH = 0 V |
-40 < TJ < 125 oC |
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0 |
-1 |
μA |
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VINH = 5 V, |
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5 |
15 |
μA |
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eN |
Output Noise Voltage (RMS) |
BW = 300 Hz to 50 KHz, Cout = 10 μF |
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160 |
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μV |
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3/11
LD2980
ELECTRICAL CHARACTERISTICS FOR LD2980C (refer to the test circuits, TJ = 25 oC, VIN = VO(NOM) +1, CO = 1 μF, IO = 1mA, Vinh = 2V, unless otherwise specified)
Symbol |
Parameter |
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Test Conditions |
Min. |
Typ. |
Max. |
Unit |
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Vo |
Output Voltage |
VIN = 3.85 V |
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2.821 |
2.85 |
2.879 |
V |
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1 |
< Io < 50 mA |
-40 < TJ < 125 oC |
2.807 |
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2.893 |
V |
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1 |
< Io < 50 mA, |
2.750 |
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2.950 |
V |
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Vo |
Output Voltage |
VIN = 4 V |
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2.970 |
3 |
3.030 |
V |
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1 |
< Io < 50 mA |
-40 < TJ < 125 oC |
2.955 |
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3.045 |
V |
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1 |
< Io < 50 mA, |
2.895 |
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3.105 |
V |
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Vo |
Output Voltage |
VIN = 4.2 V |
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3.168 |
3.2 |
3.232 |
V |
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1 |
< Io < 50 mA |
-40 < TJ < 125 oC |
3.152 |
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3.248 |
V |
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1 |
< Io < 50 mA, |
3.088 |
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3.312 |
V |
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Vo |
Output Voltage |
VIN = 4.3 V |
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3.267 |
3.3 |
3.333 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
3.250 |
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3.350 |
V |
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1 |
< Io < 50 mA, |
3.184 |
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3.416 |
V |
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Vo |
Output Voltage |
VIN = 4.8 V |
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3.762 |
3.8 |
3.838 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
3.743 |
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3.857 |
V |
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1 |
< Io < 50 mA, |
3.667 |
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3.933 |
V |
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Vo |
Output Voltage |
VIN = 5.85 V |
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4.800 |
4.85 |
4.900 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
4.777 |
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4.923 |
V |
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1 |
< Io < 50 mA, |
4.680 |
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5.020 |
V |
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Vo |
Output Voltage |
VIN = 6 V |
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4.950 |
5 |
5.050 |
V |
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1 |
< Io < 50 mA, |
-40 < TJ < 125 oC |
4.925 |
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5.075 |
V |
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1 |
< Io < 50 mA, |
4.825 |
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5.175 |
V |
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Io ut |
Output Current Limit |
RL = 0 |
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150 |
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mA |
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Vo |
Line Regulation |
VO(NOM) +1 < VIN < 16V, Io = 1 mA |
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0.003 |
0.014 |
%/Vin |
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-40 < TJ < 125 oC |
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0.032 |
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Id |
Quiescent Current |
ON MODE |
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μA |
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Io = 0 mA |
-40 < TJ < 125 oC |
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65 |
95 |
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Io = 0 mA |
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125 |
μA |
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Io = 1 mA |
-40 < TJ < 125 oC |
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80 |
110 |
μA |
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Io = 1 mA |
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170 |
μA |
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Io = 10 mA |
-40< TJ < 125 oC |
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140 |
220 |
μA |
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Io = 10 mA |
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460 |
μA |
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Io = 50 mA |
-40< TJ < 125 oC |
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375 |
600 |
μA |
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Io = 50 mA |
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1200 |
μA |
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OFF MODE |
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μA |
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VINH < 0.18 V |
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-40 < TJ < 125 oC |
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0 |
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VINH < 0.18 V |
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1 |
μA |
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SVR |
Supply Voltage Rejection |
f = 1 KHz, Cout = 10 μF |
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63 |
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dB |
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Vd |
Dropout Voltage |
Io = 0 mA |
-40 < TJ < 125 oC |
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1 |
3 |
mV |
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Io = 0 mA |
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5 |
mV |
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Io = 1 mA |
-40 < TJ < 125 oC |
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7 |
10 |
mV |
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Io = 1 mA |
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15 |
mV |
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Io = 10 mA |
-40< TJ < 125 oC |
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40 |
60 |
mV |
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Io = 10 mA |
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90 |
mV |
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Io = 50 mA |
-40< TJ < 125 oC |
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120 |
150 |
mV |
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Io = 50 mA |
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225 |
mV |
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Vil |
Control Input Logic Low |
LOW = Output OFF |
-40 < TJ < 125 oC |
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0.18 |
V |
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Vih |
Control Input Logic High |
HIGH = Output ON |
-40 < TJ < 125 oC |
2 |
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V |
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Ii |
Control Input Current |
VINH = 0 V |
-40 < TJ < 125 oC |
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0 |
-1 |
μA |
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VINH = 5 V, |
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5 |
15 |
μA |
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eN |
Output Noise Voltage (RMS) |
BW = 300 Hz to 50 KHz, Cout = 10 μF |
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160 |
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μV |
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4/11
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