Product Summary

The LM2937ET-3.3 is a positive voltage regulator capable of supplying up to 500 mA of load current. The LM2937ET-3.3 is ideal for converting a common 5V logic supply, or higher input supply voltage, to the lower 2.5V and 3.3V supplies to power VLSI ASIC’s and microcontrollers. Special circuitry has been incorporated to minimize the quiescent current to typically only 10 mA with a full 500 mA load current when the input to output voltage differential is greater than 5V.

Parametrics

LM2937ET-3.3 absolute maximum ratings: (1)Input Voltage, Continuous: 26V; mTransient (t ≤ 100 ms): 60V; (2)Internal Power Dissipation (Note 2): Internally Limited; (3)Maximum Junction Temperature: 150℃; (4)Storage Temperature Range: -65℃ to +150℃; (5)Lead Temperature Soldering, TO-220 (10 seconds): 260℃; TO-263 (10 seconds): 230℃; (6)SOT-223 (Vapor Phase, 60 seconds): 215℃; SOT-223 (Infrared, 15 seconds): 220℃; (7)ESD Susceptibility (Note 3): 2 kV.

Features

LM2937ET-3.3 features: (1)Fully specified for operation over -40℃ to +125℃; (2)Output current in excess of 500 mA (400mA for SOT-223 package); (3)Output trimmed for 5% tolerance under all operating conditions; (4)Wide output capacitor ESR range, 0.01W up to 5W; (5)Internal short circuit and thermal overload protection; (6)Reverse battery protection; (7)60V input transient protection; (8)Mirror image insertion protection.

Diagrams

LM2937ET-3.3 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2937ET-3.3
LM2937ET-3.3
National Semiconductor (TI)
Low Dropout (LDO) Regulators
Data Sheet
0-585: $0.55
585-1035: $0.45
1035-2520: $0.42
2520-5040: $0.41
LM2937ET-3.3/NOPB
LM2937ET-3.3/NOPB
National Semiconductor (TI)
Low Dropout (LDO) Regulators 500 MA LDO REG
Data Sheet
0-1: $0.97
1-25: $0.78
25-100: $0.70
100-250: $0.62