
Allicdata Part #: | LM2937IMP-3.3/NOPBTR-ND |
Manufacturer Part#: |
LM2937IMP-3.3/NOPB |
Price: | $ 0.60 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC REG LIN 3.3V 400MA SOT223-4 |
More Detail: | Linear Voltage Regulator IC Positive Fixed 1 Outpu... |
DataSheet: | ![]() |
Quantity: | 15000 |
1 +: | $ 0.60000 |
10 +: | $ 0.58200 |
100 +: | $ 0.57000 |
1000 +: | $ 0.55800 |
10000 +: | $ 0.54000 |
Current - Output: | 400mA |
Base Part Number: | LM2937 |
Supplier Device Package: | SOT-223-4 |
Package / Case: | TO-261-4, TO-261AA |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 85°C |
Protection Features: | Over Temperature, Reverse Polarity, Short Circuit |
Control Features: | -- |
PSRR: | -- |
Current - Supply (Max): | 1.25A |
Current - Quiescent (Iq): | 2mA |
Series: | -- |
Voltage Dropout (Max): | 1V @ 50mA |
Voltage - Output (Max): | -- |
Voltage - Output (Min/Fixed): | 3.3V |
Voltage - Input (Max): | 26V |
Number of Regulators: | 1 |
Output Type: | Fixed |
Output Configuration: | Positive |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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LM2937IMP-3.3/NOPB is an integrated Positive Voltage Regulator manufactured by Texas Instruments. It is a Linear Positive Voltage Regulators integrated circuit (IC) with an output voltage of 3.3V and 3.2A maximum output current. It is housed in a leadless SOT-23 package and can be used in a variety of applications.
It is suitable for a variety of applications including powering DSPs, FPGAs, processors, peripherals, wireless applications as well as automotive applications. This device features enable and disable pins to minimize current drain in applications where the circuit may not always be in operation. It has a wide input voltage range from 4.5V to 28V, making it suitable for a range of power supplies.
In terms of working principle, LM2937IMP-3.3/NOPB is an adjustable linear regulator based on the legendary 78xx series of regulators. The input voltage is regulated by controlling the collector-emitter current between Q1 and Q3. The base current is regulated by the enable pin which is connected to Q2, allowing the current which flows through Q2 to rise or fall to accommodate a change in the collector current in Q1.
To provide a close match to the nominal 3.3V output voltage, LM2937IMP-3.3/NOPB requires an external resistor on the Adjust pin to set the output voltage. The device has a wide operating temperature range from -40°C to 85°C and a low quiescent current of just 17μA. This makes it perfectly suited for battery operated portable equipment.
The output voltage of the LM2937IMP-3.3/NOPB is accurate to within ±1.5% and is protected against over current and over temperature conditions. The output is protected against short circuits, can withstand transients up to 30V, and has good Noise Rejection Ratios (NRRs). Additionally, the Enable and Shutdown pins provide a simple, low power way of controlling the output voltage.
Overall, the LM2937IMP-3.3/NOPB is a reliable, adjustable linear regulator that can be used in a wide range of applications. It has a wide operating temperature range from -40°C to 85°C, a wide input voltage range from 4.5V to 28V, and low quiescent current, making it ideal for battery operated portable equipment. With its adjustable output voltage and protection features, the LM2937IMP-3.3/NOPB is an excellent choice for any application requiring a reliable voltage regulator.
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