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SGS Thomson Microelectronics
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LD2980ABM28TR
Datasheet
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SGS Thomson Microelectronics LD2980CM48TR, LD2980CM38TR, LD2980CM33TR, LD2980CM32TR, LD2980ABM48TR Datasheet

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LD2980
VOLTAGE REGULATORS WITH INHIBIT
■ ULTRALOWDROPOUTVOLTAGE
(0.12VTYP.AT 50mA LOAD)
■ VERYLOW QUIESCENTCURRENT
■ OUTPUT CURRENT UP TO50 mA
■ LOGIC-CONTROLLEDELECTRONIC
SHUTDOWN
■ OUTPUT VOLTAGESOF 2.85;3.0;3.2;3.3;
3.8;4.85; 5.0V
■ INTERNALCURRENT AND THERMAL LIMIT
■ AVAILABLEIN± 0.5%TOLLERANCE(AT
o
C, A VERSION)
25
■ SUPPLYVOLTAGEREJECTION:63dB(TYP)
■ ONLY1µF FORSTABILITY
■ TEMPERATURERANGE:-40 TO 125
■ SMALLESTPACKAGESSOT23-5LAND
SOT-89
■ FASTDYNAMICRESPONSETOLINEAND
LOADCHANGES
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
o
C
SERIES
VERY LOW DROP
SOT23-5L
quiescent current make them particularly suitable for low noise, low power applications and in batterypowered 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.
SOT-89
SCHEMATIC DIAGRAM
April 2000
1/11
LD2980
ABSOLUTE MAXIMUM RATING
Symbol Parameter Value Unit
V
DC InputVoltage 16 V
IN
V
THERMALDATA
Symbol Parameter SOT-89 SOT23-5L Unit
R
thj-cas e
INHBITInput Voltage 16 V
INH
OutputCurrent Internally limited mA
I
o
P
PowerDissipation Internally limited mW
tot
StorageTemperature Range - 55 to 150
T
stg
OperatingJunctionTemperatureRange - 40 to 125
T
op
Thermal ResistanceJunction-case 15 81
o
o
C
o
C
C/W
CONNECTION DIAGRAM
(*) Inhibitpin is not internally pulled-up then it must not be left floating.Disable the device when connected to GND or to a positivevoltage less than 0.18V
(topview)
SOT23-5L
SOT-89
ORDERING NUMBERS
AB VERSION C VERSION Output Voltage
SOT23-5L SOT-89 SOT23-5L SOT-89
LD2980ABM28TR LD2980ABM30TR LD2980ABM32TR LD2980ABM33TR LD2980ABM38TR LD2980ABM48TR LD2980ABM50TR
LD2980ABU28TR LD2980ABU30TR LD2980ABU32TR LD2980ABU33TR LD2980ABU38TR LD2980ABU48TR LD2980ABU50TR
LD2980CM28TR LD2980CM30TR LD2980CM32TR LD2980CM33TR LD2980CM38TR LD2980CM48TR LD2980CM50TR
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
APPLICATION CIRCUIT
2/11
LD2980
ELECTRICALCHARACTERISTICS FOR LD2980AB
V
IN=VO(NOM)
+1, CO=1µF, IO= 1mA, V
= 2V, unlessotherwise specified)
inh
(refer to the test circuits,T
=25oC,
J
Symbol Parameter Test Conditions Min. Typ. Max. Unit
OutputVoltage VIN=3.85 V
V
o
OutputVoltage VIN=4V
V
o
OutputVoltage VIN=4.2 V
V
o
OutputVoltage VIN=4.3 V
V
o
OutputVoltage VIN=4.8 V
V
o
OutputVoltage VIN=5.85 V
V
o
OutputVoltage VIN=6V
V
o
OutputCurrentLimit RL=0 150 mA
I
out
V
∆
LineRegulation V
o
I
QuiescentCurrent ON MODE
d
<50mA
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
<50mA
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
<50mA
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
1<I
<50 mA,
o
<50 mA, -40< TJ< 125oC
1<I
o
<50 mA,
1<I
o
1<I
<50 mA, -40< TJ< 125oC
o
<50 mA,
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
<50 mA,
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
+1< VIN<16V, Io=1mA
O(NOM)
-40 < T
I I I I I I I I
< 125oC
J
=0mA
o
=0 mA -40< TJ<125oC
o
=1mA
o
=1 mA -40< TJ<125oC
o
=10mA
o
=10 mA -40< TJ< 125oC
o
=50mA
o
=50 mA -40< TJ< 125oC
o
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
2.85 2.865
2.872
2.922
33.015
3.023
3.075
3.2 3. 216
3.225
3.28
3.3 3. 317
3.325
3.383
3.8 3. 819
3.829
3.895
4.85 4.875
4.887
4.971
55.025
5.038
5.125
0.003 0.014
0.032
65
95
125
80
110 170
140
220 460
375
600
1200
%/V
OFF MODE
<0.18 V
V
INH
<0.18 V -40 < TJ< 125oC
V
INH
SVR Supply Voltage Rejection f = 1 KHz, C
DropoutVoltage Io=0mA
V
d
ControlInput LogicLow LOW = OutputOFF -40 < TJ<125oC0.18V
V
il
ControlInput LogicHigh HIGH = Output ON -40< TJ<125oC2 V
V
ih
ControlInput Current V
I
i
=0 mA -40< TJ<125oC
I
o
=1mA
I
o
=1 mA -40< TJ<125oC
I
o
=10mA
I
o
=10 mA -40< TJ< 125oC
I
o
=50mA
I
o
=50 mA -40< TJ< 125oC
I
o
=0V
INH
=5 V, -40< TJ<125oC
V
INH
=10µF63dB
out
eN OutputNoise Voltage(RMS) BW = 300 Hz to 50 KHz, C
=10µF160 µV
out
0
1 7
40
120
0 5
1
3
5 10 15 60 90
150 225
-1
15
V V V
V V V
V V V
V V V
V V V
V V V
V V V
µA µ µA µ µA µ µA µ
µ µA
mV mV mV mV mV mV mV mV
µA µ
in
A
A A A
A
A
3/11
LD2980
ELECTRICALCHARACTERISTICS FOR LD2980C
V
IN=VO(NOM)
+1, CO=1µF, IO= 1mA, V
= 2V, unlessotherwise specified)
inh
(refer to the test circuits, T
=25oC,
J
Symbol Parameter Test Conditions Min. Typ. Max. Unit
OutputVoltage VIN=3.85 V
V
o
OutputVoltage VIN=4V
V
o
OutputVoltage VIN=4.2 V
V
o
OutputVoltage VIN=4.3 V
V
o
OutputVoltage VIN=4.8 V
V
o
OutputVoltage VIN=5.85 V
V
o
OutputVoltage VIN=6V
V
o
OutputCurrentLimit RL=0 150 mA
I
out
V
∆
LineRegulation V
o
I
QuiescentCurrent ON MODE
d
<50mA
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
<50mA
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
<50mA
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
1<I
<50 mA,
o
<50 mA, -40< TJ< 125oC
1<I
o
<50 mA,
1<I
o
1<I
<50 mA, -40< TJ< 125oC
o
<50 mA,
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
<50 mA,
1<I
o
<50 mA, -40< TJ< 125oC
1<I
o
+1< VIN<16V, Io=1mA
O(NOM)
-40 < T
I I I I I I I I
< 125oC
J
=0mA
o
=0 mA -40< TJ<125oC
o
=1mA
o
=1 mA -40< TJ<125oC
o
=10mA
o
=10 mA -40< TJ< 125oC
o
=50mA
o
=50 mA -40< TJ< 125oC
o
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
2.85 2.879
2.893
2.950
33.030
3.045
3.105
3.2 3. 232
3.248
3.312
3.3 3. 333
3.350
3.416
3.8 3. 838
3.857
3.933
4.85 4.900
4.923
5.020
55.050
5.075
5.175
0.003 0.014
0.032
65
95
125
80
110 170
140
220 460
375
600
1200
%/V
OFF MODE
<0.18 V
V
INH
<0.18 V -40 < TJ< 125oC
V
INH
SVR Supply Voltage Rejection f = 1 KHz, C
DropoutVoltage Io=0mA
V
d
ControlInput LogicLow LOW = OutputOFF -40 < TJ<125oC0.18V
V
il
ControlInput LogicHigh HIGH = Output ON -40< TJ<125oC2 V
V
ih
ControlInput Current V
I
i
=0 mA -40< TJ<125oC
I
o
=1mA
I
o
=1 mA -40< TJ<125oC
I
o
=10mA
I
o
=10 mA -40< TJ< 125oC
I
o
=50mA
I
o
=50 mA -40< TJ< 125oC
I
o
=0V
INH
=5 V, -40< TJ<125oC
V
INH
=10µF63dB
out
eN OutputNoise Voltage(RMS) BW = 300 Hz to 50 KHz, C
=10µF160 µV
out
0
1 7
40
120
0 5
1
3
5 10 15 60 90
150 225
-1
15
V V V
V V V
V V V
V V V
V V V
V V V
V V V
µA µ µA µ µA µ µA µ
µ µA
mV mV mV mV mV mV mV mV
µA µ
in
A
A A A
A
A
4/11
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