(China (Mainland))
Product Summary
The LP2981-33DBVR is a micropower voltage regulator with very low quiescent current (130 μA typical at 1 mA load) and very low dropout voltage (typ. 60 mV at light load and 470 mV at 250 mA load current). The device is ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life. The LP2981-33DBVR retains all the desirable characteristics of the LP2951, but offer increased output current, additional features, and an improved shutdown function. The internal crowbar pulls the output down quickly when the shutdown is activated. The applications of the LP2981-33DBVR include High-efficiency linear regulator, Regulator with under-voltage shutdown, Low dropout battery-powered regulator, Snap-ON/Snap-OFF regulator.
Parametrics
LP2981-33DBVR absolute maximum ratings: (1)Storage Temperature Range: -65℃ ≤ TA ≤ +150℃; (2)Operating Temperature Range: -40℃ ≤ TJ ≤ +125℃; (3)Lead Temp (Soldering, 5 seconds): 260℃; (4)Power Dissipation (Note 2): Internally Limited; (5)Input Supply Voltage: -20V to +30V; (6)Feedback Input Voltage (Note 3): -0.3V to +5V; (7)Comparator Input Voltage (Note 4): -0.3V to +30V; (8)Shutdown Input Voltage (Note 4): -0.3V to +30V; (9)Comparator Output Voltage (Note4): -0.3V to +30V; (10)ESD Rating (Note 15): 2 kV.
Features
LP2981-33DBVR features: (1)Output voltage adjusts from 1.23V to 29V; (2)Guaranteed 250 mA output current; (3)Extremely low quiescent current; (4)Low dropout voltage; (5)Extremely tight line and load regulation; (6)Very low temperature coefficient; (7)Current and thermal limiting; (8)Reverse battery protection; (9)50 mA (typical) output pulldown crowbar; (10)5V and 3.3V versions available.
Diagrams
| Image | Part No | Mfg | Description |  |
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 LP2981-33DBVR |
Texas Instruments |
Low Dropout (LDO) Regulators 100-mA 1.25% Tolerance |
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LP2981-33DBVRE4 |
Texas Instruments |
Low Dropout (LDO) Regulators 100-mA 1.25% Tolerance |
Data Sheet |
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LP2981-33DBVRG4 |
Texas Instruments |
Low Dropout (LDO) Regulators Sgl Output 100mA Fixed(3.3V) Shutdown |
Data Sheet |
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