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LM2937ET-10/NOPB
Texas Instruments
IC REG LINEAR 10V 500MA TO220-3
2312 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 500mA TO-220-3
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LM2937ET-10/NOPB
Product Overview
1312006
DiGi Electronics Part Number
LM2937ET-10/NOPB-DGManufacturer
Texas Instruments
LM2937ET-10/NOPB
Description
IC REG LINEAR 10V 500MA TO220-3Inventory
2312 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 500mA TO-220-3
Quantity
Minimum 1
Minimum 1
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LM2937ET-10/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Tube
Series
-
Product Status
Active
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
26V
Voltage - Output (Min/Fixed)
10V
Voltage - Output (Max)
-
Voltage Dropout (Max)
1V @ 500mA
Current - Output
500mA
Current - Quiescent (Iq)
10 mA
Current - Supply (Max)
20 mA
PSRR
-
Control Features
-
Protection Features
Mirror-Image Insertion, Over Temperature, Short Circuit, Transient Voltage
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Through Hole
Package / Case
TO-220-3
Supplier Device Package
TO-220-3
Base Product Number
LM2937
Datasheet & Documents
HTML Datasheet
LM2937ET-10/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
*LM2937ET-10/NOPB
LM2937ET-10-NDR
LM2937ET10NOPB
Standard Package
45
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Their broad selection makes it easier for customers to find comprehensive solutions in one place.
de desembre 02, 2025
I can count on DiGi Electronics for delivering quality that exceeds expectations every time.
de desembre 02, 2025
I’m satisfied with how well the product holds up over time.
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Frequently Asked Questions (FAQ)
Can the LM2937ET-10/NOPB replace an LM7810 in a legacy industrial control board without requiring circuit modifications?
The LM2937ET-10/NOPB can functionally replace the LM7810 in many through-hole applications due to its identical 10V fixed output, 500mA current capability, and TO-220-3 package. However, unlike the LM7810, the LM2937ET-10/NOPB has a lower dropout voltage (1V max vs. ~2V for the 7810), which improves efficiency in low-headroom scenarios. Ensure your input voltage stays above 11V under full load to maintain regulation. Also verify that your existing thermal design accommodates the LM2937’s slightly higher quiescent current (10mA typical), though this rarely impacts legacy systems. Always confirm pin compatibility—both are pin-to-pin compatible in standard configurations.
What are the key reliability risks when using the LM2937ET-10/NOPB in automotive under-hood environments near its 125°C junction temperature limit?
Operating the LM2937ET-10/NOPB near its 125°C TJ(max) in high-ambient environments like engine compartments significantly reduces mean time between failures (MTBF). At sustained temperatures above 110°C, thermal cycling and electromigration accelerate degradation, especially if the regulator is delivering near 500mA continuously. To mitigate risk, use a properly sized heatsink with low θSA, ensure adequate airflow, and derate output current by at least 20% when ambient exceeds 85°C. Additionally, monitor input transients—the device includes transient voltage protection, but repeated spikes above 26V can stress internal structures even if within absolute maximum ratings.
How does the LM2937ET-10/NOPB compare to the newer TPS7B4250-Q1 for a 12V-to-10V conversion in a space-constrained automotive infotainment module?
While the LM2937ET-10/NOPB is a robust, cost-effective linear regulator, the TPS7B4250-Q1 (also from Texas Instruments) offers superior efficiency, smaller HTSSOP package, and integrated diagnostic features critical for ASIL-compliant designs. The LM2937ET-10/NOPB dissipates ~1W at 500mA with a 12V input, requiring a bulky TO-220 heatsink—problematic in compact modules. In contrast, the TPS7B4250-Q1 uses switching architecture with much lower thermal dissipation and fits in surface-mount packages. However, if your design already uses through-hole assembly and doesn’t require diagnostics or ultra-low noise, the LM2937ET-10/NOPB remains viable with proper thermal management.
Is it safe to parallel two LM2937ET-10/NOPB regulators to increase current capacity beyond 500mA in a high-reliability telecom power supply?
Paralleling LM2937ET-10/NOPB devices is not recommended without active current-sharing circuitry due to inherent mismatches in output voltage tolerance and thermal coefficients. Even minor differences in reference voltage (±2% typical) cause one regulator to carry disproportionate load, leading to thermal runaway. If higher current is needed, consider a single higher-current LDO like the LT1086CT-10 (1.5A, TO-220) or switch to a buck converter. If you must parallel them, add ballast resistors (e.g., 0.5Ω, 2W) in series with each output and ensure tight thermal coupling—but this increases dropout voltage and reduces efficiency, negating key advantages of the LM2937ET-10/NOPB.
Can the LM2937ET-10/NOPB handle reverse battery connection in a 24V industrial sensor node without external protection diodes?
No—the LM2937ET-10/NOPB lacks built-in reverse-polarity protection. Applying a negative voltage to its input will forward-bias internal parasitic junctions, potentially causing latch-up or permanent damage. While it includes mirror-image insertion protection (preventing damage if inserted backward on the PCB), this does not safeguard against external reverse supply conditions. For 24V industrial nodes prone to wiring errors, add a series Schottky diode (e.g., 1N5819) at the input or use a P-channel MOSFET-based reverse protection circuit. This is especially critical since the absolute maximum rating specifies –0.3V on any pin, and field failures often occur during maintenance or miswiring.
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LM2937ET-10/NOPB CAD Models
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