Texas Instruments LM337LZ/NOPB
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) |
| Mfr | Texas Instruments |
| Mounting Type | Through Hole |
| Operating Temperature | -25°C ~ 125°C |
| Voltage - Input (Max) | -40V |
| Output Type | Adjustable |
| Current - Output | 100mA |
| Supplier Device Package | TO-92-3 |
| Output Configuration | Negative |
| Control Features | - |
| Voltage - Output (Min/Fixed) | -1.2V |
| Voltage - Output (Max) | -37V |
| Number of Regulators | 1 |
| Protection Features | Over Temperature, Short Circuit |
| PSRR | 60dB (120Hz) |
| Voltage Dropout (Max) | - |
| Package | Bulk |
| Product Status | Active |
| Base Product Number | LM337 |
| REACH Status | REACH Unaffected |
| Standard Package | 1,800 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
LM337LZ/NOPB negative voltage regulator
The LM337LZ/NOPB is a low-dropout (LDO) adjustable negative voltage regulator from Texas Instruments (TI), designed to deliver stable negative output voltages from -1.2V to -37V with a maximum load current of 100mA. Packaged in a compact TO-92 (LP) plastic case, it is ideal for space-constrained applications requiring precise voltage regulation in low-power circuits. Key features include low dropout voltage (≤1.5V at full load), thermal overload protection, and current limiting to ensure reliability in industrial, automotive, and consumer electronics. The device supports adjustable output via an external resistor divider, making it versatile for custom negative bias supplies, op-amp powering, and data acquisition systems.
LM337LZ/NOPB Applications
The LM337LZ/NOPB is widely used in low-power negative voltage regulation scenarios, including:
1. Battery-Powered Devices: Stabilizing negative rails in portable medical instruments and sensors.
2. Audio Equipment: Powering operational amplifiers and microphone preamps in professional audio systems.
3. Data Acquisition Systems: Providing precise negative bias for ADCs/DACs in industrial control units.
4. Automotive Electronics: Supporting negative supply rails in dashboard displays and infotainment modules.
5. RF and Communication: Regulating negative voltages in low-noise amplifiers (LNAs) and mixers.
Alternative Models
● LT1185CS8-5#PBF (Analog Devices): A low-dropout negative regulator with ±2% output accuracy and 50mA capacity, suited for precision instrumentation.
● 79L05ACZ-TR (ON Semiconductor): A fixed -5V negative regulator in TO-92 package, ideal for simple bias supplies without external adjustment.
● MIC5277YM5-TR (Microchip): A 150mA negative LDO with ultra-low quiescent current (3µA), targeting battery-powered IoT devices.
● AZ1117CH-ADJTRG1 (Diodes Incorporated): An adjustable negative regulator with 1A output, designed for high-current industrial applications.
