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The LD2981 series are 100mA fixed-output voltage regulator. The low drop-voltage and the ultra low 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 LD2981 is designed to work with low ESR ceramic capacitor. Typical applications are in cellular phone, palmtop/laptop computer, personal digital assistant (PDA),personal stereo, camcorder and camera.
LD2981ABM18TR Maximum Ratings
Symbol
Parameter
Value
Unit
VI
DC Input Voltage
-0.3 to 16
V
VINH
INHIBIT Input Voltage
-0.3 to 16
V
IO
Output Current
Internally Limited
PD
Power Dissipation
Internally Limited
Tstg
Storage Temperature Range
-55 to +150
Top
Operating Junction Temperature Range
-40 to +125
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
LD2981ABM18TR Features
· STABLE WITH LOW ESR CERAMIC CAPACITORS · ULTRA LOW DROPOUT VOLTAGE (0.17V TYP. AT 100mA 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 100mA · 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 · ± 0.75% 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
The LD2981 series are 100mA fixed-output voltage regulator. The low drop-voltage and the ultra low 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 LD2981 is designed to work with low ESR ceramic capacitor. Typical applications are in cellular phone, palmtop/laptop computer, personal digital assistant (PDA),personal stereo, camcorder and camera.
LD2981ABM25TR Maximum Ratings
Symbol
Parameter
Value
Unit
VI
DC Input Voltage
-0.3 to 16
V
VINH
INHIBIT Input Voltage
-0.3 to 16
V
IO
Output Current
Internally Limited
PD
Power Dissipation
Internally Limited
Tstg
Storage Temperature Range
-55 to +150
Top
Operating Junction Temperature Range
-40 to +125
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
LD2981ABM25TR Features
· STABLE WITH LOW ESR CERAMIC CAPACITORS · ULTRA LOW DROPOUT VOLTAGE (0.17V TYP. AT 100mA 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 100mA · 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 · ± 0.75% 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