3-Terminal Adjustable Regulator

The LM337L is an adjustable 3-terminal negative voltage Regulator capable of supplying 100mA over a 1.2V to 37V output range. It is exceptionally easy to use and requires only two external resistors to set the output voltage. Furthermore, both line and load regulation are better than standard fixed Regulators Also, the LM337L is packaged in a standard TO-92 Transistor package which is easy to use.
In addition to higher performance than fixed Regulators the LM337L offers full overload protection. Included on the chip are current limit, thermal overload protection and safe area protection. All overload protection circuitry remains fully functional even if the adjustment terminal is disconnected.
Normally, only a single 1?F solid tantalum output capacitor is needed unless the device is situated more than 6 inches from the input Filter capacitors, in which case an input bypass is needed. A larger output capacitor CAN be added to improve transient response. The adjustment terminal CAN be bypassed to achieve very high ripple rejection ratios which are difficult to achieve with standard 3-terminal Regulators
Besides replacing fixed Regulators the LM337L is useful in a wide variety of other applications. Since the Regulator is "floating" and sees only the input-to-output differential voltage, supplies of several hundred volts CAN be regulated as long as the maximum input-to-output differential is not exceeded.
Also, it makes an especially simple adjustable Switching Regulator a programmable output Regulator or by connecting a fixed resistor between the adjustment and output, the LM337L CAN be used as a precision current Regulator Supplies with electronic shutdown CAN be achieved by clamping the adjustment terminal to ground which programs the output to 1.2V where most loads draw little current.
The LM337L is available in a standard TO-92 Transistor package, SO-8 surface mount package, and in our new 12 mil diameter bump micro SMD package. The LM337L is rated for operation over a -25C to +125C range.
For applications requiring greater output current in excess of 0.5A and 1.5A, see LM137 series data sheets. For the positive complement, see series LM117 and LM317L data sheets.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM337LM Texas Instruments 100mA Adjustable Output Negative Voltage Regulator 8-SOIC -25 to 100
LM337LMX/NOPB Texas Instruments 100mA Adjustable Output Negative Voltage Regulator 8-SOIC -25 to 100
LM337LZ/LFT3 Texas Instruments 100mA Adjustable Output Negative Voltage Regulator 3-TO-92
LM337LZ/LFT1 Texas Instruments 3-Terminal Adjustable Regulator 3-TO-92
LM337LMX Texas Instruments 100mA Adjustable Output Negative Voltage Regulator 8-SOIC -25 to 100
LM337LZ/LFT4 Texas Instruments 3-Terminal Adjustable Regulator 3-TO-92
LM337LM/NOPB Texas Instruments 100mA Adjustable Output Negative Voltage Regulator 8-SOIC -25 to 100
LM337LZ/NOPB Texas Instruments 100mA Adjustable Output Negative Voltage Regulator 3-TO-92 -25 to 100
LM337L 's PackagesLM337L 's pdf datasheet
LM337LBL
LM337LM SOIC
LM337LMX SOIC
LM337LZ TO-92
LM337L-MDC




LM337L Pinout, Pinouts
LM337L pinout,Pin out
This is one package pinout of LM337L,If you need more pinouts please download LM337L's pdf datasheet.

LM337L Application circuits
LM337L circuits
This is one application circuit of LM337L,If you need more circuits,please download LM337L's pdf datasheet.


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