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LD2979

ST Microelectronics
Part Number LD2979
Manufacturer ST Microelectronics
Description VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT
Published Apr 25, 2005
Detailed Description ® LD2979 SERIES VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT s s s s s s s s s s s VERY LOW DROPOUT VOLTAGE (0.2...
Datasheet PDF File LD2979 PDF File

LD2979
LD2979

Overview
® LD2979 SERIES VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT s s s s s s s s s s s VERY LOW DROPOUT VOLTAGE (0.
2V TYP.
AT 50mA LOAD) VERY LOW QUIESCENT CURRENT (TYP.
500µA AT50mA LOAD) OUTPUT CURRENT UP TO 50 mA LOGIC-CONTROLLED ELECTRONIC SHUTDOWN OUTPUT VOLTAGES OF 2.
85; 3.
0; 3.
2; 3.
3; 3.
8; 5.
0V INTERNAL CURRENT AND THERMAL LIMIT SUPPLY VOLTAGE REJECTION: 63dB (TYP) ONLY 1µF FOR STABILITY SELECTION AT 25 oC TEMPERATURE RANGE: -25 TO 125 oC PACKAGE AVAILABLE:SOT23-5L AND TO-92 SOT23-5L DESCRIPTION The LD2979 series are very Low Drop regulators available in SOT23-5L and TO-92.
The very low drop-voltage and the very low quiescent current make them particularly suitable for low noise, low power applications and in battery powered systems.
Shutdown Logic Control function is available on five pin version (TTL compatible).
This means TO-92 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 1/9 LD2979 ABSOLUTE MAXIMUM RATING Symbol V IN V I NH Io P tot T st g T op DC Input Voltage DC Inhibit Input Voltage Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter Value 16 VI N Internally limited Internally limited - 40 to 150 - 25 to 125 Unit V V mA mW o o C C CONNECTION DIAGRAM (top view) BOTTOM VIEW SOT23-5L SYMBOL NAME AND FUNCTION SO T23-5L VI N GND INHIBIT NC V OUT Input Voltage Ground Control Switch ON/OF F (*) Not to be connected Output Voltage 1 2 3 4 5 TO-92 PIN NUMBER T O-92 3 2 1 (*) Only for the version in SOT23-5L package: Inhibit pin is not internally pulled-up then it must not be left floating.
Connect to a positive voltage higher than 2V to able the device.
ORDERING NUMBERS SOT23-5L LD2979M28 LD2979M30 LD2979M32 LD2979M33 LD2979M38 LD2979M50 LD2979Z28 LD2979Z30 LD2979Z32 LD2979Z33 LD2979Z38 LD2979Z50 TO-92 Output Voltage 2.
85 V 3.
0 V 3.
2 V 3.
3 V 3.
8 V 5.
0 V 2/9 LD297...


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