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PDF LD2981 Data sheet ( Hoja de datos )

Número de pieza LD2981
Descripción VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT
Fabricantes ST Microelectronics 
Logotipo ST Microelectronics Logotipo



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No Preview Available ! LD2981 Hoja de datos, Descripción, Manual

LD2981
® SERIES
VERY LOW DROP
VOLTAGE REGULATORS WITH INHIBIT
s ULTRA LOW DROPOUT VOLTAGE
(0.2V AT 100mA LOAD, 7mV AT 1mA LOAD)
s VERY LOW QUIESCENT CURRENT
(MAX 1µA WHEN IS IN SHUTDOWN MODE)
s OUTPUT CURRENT UP TO 100 mA
s LOGIC-CONTROLLED ELECTRONIC
SHUTDOWN
s OUTPUT VOLTAGES OF 2.85; 3.0; 3.2; 3.3;
3.8; 4.85; 5.0V
s INTERNAL CURRENT AND THERMAL LIMIT
s AVAILABLEIN ± 0.75% TOLLERANCE (AT
25oC, A VERSION)
s OUTPUT LOW NOISE VOLTAGE 160µVrms
s ONLY 4.7µF FOR STABILITY
s TEMPERATURE RANGE: -40 TO 125 oC
s SMALLEST PACKAGE SOT23-5L AND
SOT-89
s FAST DYNAMIC RESPONCE TO LINE AND
LOAD CHANGES
DESCRIPTION
The LD2981 series are 100mA fixed-output
voltage regulator. The ultra drop-voltage and the
ultra low quiescent current make them particularly
suitable for low noise, low power applications and
in battery powered systems.
SOT23-5L
SOT-89
In sleep mode quiescent current is less than 1µA
when INHIBIT pis 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. Typlical application are in
cellular phone, palmtop/laptop computer,
personal digital assistant (PDA), personal stereo,
camcorder and camera.
SCHEMATIC DIAGRAM
April 2000
1/12

1 page




LD2981 pdf
LD2981
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified TJ=25oC, CIN=COUT=1µF)
Output Voltage vs Temperature
Output Voltage vs Temperature
Output Voltage vs Input Voltage
Output Voltage vs Input Voltage
Output Voltage vs Output Current
Output Voltage vs Output Current
5/12

5 Page





LD2981 arduino
DIM.
A
A1
A2
b
C
D
E
E1
L
e
e1
SOT23-5L MECHANICAL DATA
MIN.
0.90
0.00
0.90
0.35
0.09
2.80
2.60
1.50
0.35
mm
TYP.
0.95
1.9
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
mils
TYP.
37.4
74.8
LD2981
MAX.
57.1
5.9
51.2
19.7
7.8
118.1
118.1
68.8
21.6
11/12

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