peculiarity
Adjustable output voltages from 1.2V to -37V
Guaranteed output current of 1.5A, -55°C to +150°C
The power supply regulation is typically 0.01%/V
Typical load regulation 0.3%
Excellent thermal regulation, 0.002%/W
77 dB ripple rejection.
Excellent suppression of thermal transients
A temperature coefficient of 50 ppm/°C
Temperature independent current limit
Internal overheating protection
P+ product improvement testing
Standard 3-pin transistor package
Output short-circuit protection
LM137 series packaging and power capability
Rating: Design
Device package power load
Dissipate current
LM137/337 TO - 3（K） 20W 1.5A
TO - 39 (H) 2W 0.5A
LM337 TO - 220（T） 15W 1.5A
LM337 SOT - 223（MP） 2W 1A
illustrate
The LM137/LM337 adjustable three-terminal negative voltage regulators are capable of exceeding the -1.5A output voltage range of -1.2V to -37V and are oversupplied by -1.5A. These regulators are very easy to apply and require only two external resistors to set the output voltage and output frequency compensation capacitors. Good regulation and low thermal transient circuit design are optimized. In addition, the LM137 series features internal current limiting, thermal shutdown and compensation of safety zones, making them virtually overload-proof against blowouts.
The LM137/LM337 services include local card regulation, programmable output voltage regulation or high-precision current regulation for various applications. The LM137/LM337 are ideal to complement the LM117/LM317 adjustable positive regulators.