Texas Instruments LM337KCSE3
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $1.06 | $1.06 |
| 15+ | $1.03 | $15.45 |
| 25+ | $1.01 | $25.25 |
| 50+ | $0.95 | $47.50 |
| 100+ | $0.84 | $84.00 |
| N+ | $0.17 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | |
| Packaging | Tube | |
| Output Configuration | Negative |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | -40V |
| Voltage - Output (Min/Fixed) | -1.2V |
| Voltage - Output (Max) | -37V |
| Voltage Dropout (Max) | - |
| Current - Output | 1.5A |
| Current - Quiescent (Iq) | - |
| Current - Supply (Max) | - |
| PSRR | 77dB (120Hz) |
| Control Features | - |
| Protection Features | Over Temperature, Short Circuit |
| Operating Temperature | 0°C ~ 125°C |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | TO-220-3 |
| Supplier Device Package | TO-220-3 |
The LM337KCSE3 from Texas Instruments is an adjustable negative linear regulator capable of delivering 1.5A. Its output voltage can be set from -1.2V to -37V using external resistors, providing flexibility for various negative rail applications. With a PSRR of 77dB at 120Hz, it ensures clean power for audio and precision analog circuits. The TO-220-3 package offers excellent thermal performance for high-current operation.
- Adjustable Negative Output: Set from -1.2V to -37V, ideal for bipolar supplies.
- 1.5A Output Current: Supports high-current negative rails.
- High PSRR: 77dB at 120Hz, reducing ripple in audio applications.
- TO-220 Package: Excellent thermal dissipation for demanding loads.
Negative Rail for Op-Amp Circuits
The LM337KCSE3 provides a stable negative supply (-1.2V to -37V) essential for dual-supply operational amplifier circuits in audio and instrumentation, ensuring symmetrical performance.
Audio Preamplifiers
With 77dB PSRR at 120Hz, this regulator delivers clean negative rails for high-fidelity audio preamps, reducing hum and noise in the signal path.
Industrial Test Equipment
For bench power supplies and ATE systems, the adjustable negative output allows precise generation of negative bias voltages for sensors and amplifiers.
Telecom Line Drivers
In telecom systems, negative voltages are needed for line drivers and interface circuits. This LDO provides a robust 1.5A solution in a TO-220 package.
Bipolar Power Supplies
Paired with a positive regulator like the LM317, the LM337 creates a complete bipolar supply for analog circuits, enabling dual-rail operation for high-performance designs.
Battery Charging for Negative Chemistry
Some specialized battery chemistries require negative charging voltages. This adjustable regulator can be configured to provide the necessary negative rail.
- Q: What is the output voltage range of the LM337KCSE3?
- A: It is an adjustable negative regulator, with output voltage adjustable from -1.2V to -37V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage range is from -4.2V to -40V (typical for this device).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 2.5V at 1.5A load (not explicitly provided, but typical for this series).
- Q: What is the quiescent current?
- A: The quiescent current is typically 1.5mA (not explicitly provided, but typical for this series).
- Q: What package is available?
- A: It is available in a TO-220-3 package.
LM337KCSE3.pdf
- Q: What is the output voltage range of the LM337KCSE3?
- A: It is an adjustable negative regulator, with output voltage adjustable from -1.2V to -37V.
- Q: What is the maximum output current?
- A: It can deliver up to 1.5A of output current.
- Q: What is the input voltage range?
- A: The input voltage range is from -4.2V to -40V (typical for this device).
- Q: What is the dropout voltage?
- A: The dropout voltage is typically 2.5V at 1.5A load (not explicitly provided, but typical for this series).
- Q: What is the quiescent current?
- A: The quiescent current is typically 1.5mA (not explicitly provided, but typical for this series).
- Q: What package is available?
- A: It is available in a TO-220-3 package.
