LM350-N (正在供货)

3A 可调节输出线性稳压器/LDO

3A 可调节输出线性稳压器/LDO - LM350-N


  • LP38690  -  Lower dropout voltage
  • LP38692  -  Lower dropout voltage, shutdown mode

Other devices and data sheet

Other device variants can also be found in the  LM350-N-MIL product page

This data sheet applies to both  LM350-N and  LM350-N-MIL


The LM150 series of adjustable 3-terminal positive voltage regulators is capable of supplying in excess of 3A over a 1.2V to 33V output range. They are exceptionally easy to use and require only 2 external resistors to set the output voltage. Further, both line and load regulation are comparable to discrete designs. Also, the LM150 is packaged in standard transistor packages which are easily mounted and handled.

In addition to higher performance than fixed regulators, the LM150 series offers full overload protection available only in IC's. 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 accidentally disconnected.

Normally, no capacitors are needed unless the device is situated more than 6 inches from the input filter capacitors in which case an input bypass is needed. An output capacitor can be added to improve transient response, while bypassing the adjustment pin will increase the regulator's ripple rejection.

Besides replacing fixed regulators or discrete designs, the LM150 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, i.e., avoid short-circuiting the output.

By connecting a fixed resistor between the adjustment pin and output, the LM150 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 part numbers in the LM150 series which have a NDS suffix are packaged in a standard Steel TO-3 package, while those with a NDE suffix are packaged in a TO-220 plastic package. The LM150 is rated for −55°C ≤ TJ ≤ +150°C, while the LM350A is rated for −40°C ≤ TJ ≤ +125°C, and the LM350 is rated for 0°C ≤ TJ ≤ +125°C.


  • Adjustable Output Down to 1.2V
  • Guaranteed 3A output Current
  • Guaranteed Thermal Regulation
  • Output is Short Circuit Protected
  • Current Limit Constant with Temperature
  • P+ Product Enhancement Tested
  • 86 dB Ripple Rejection
  • Ensured 1% Output Voltage Tolerance (LM350A)
  • Ensured Max. 0.01%/V Line Regulation (LM350A)
  • Ensured Max. 0.3% Load Regulation (LM350A)


参数 与其它产品相比 单通道 LDO

Iout (Max) (A)
Output Options
Vin (Min) (V)
Vin (Max) (V)
Fixed Output Options (V)
Vout (Min) (V)
Vout (Max) (V)
Iq (Typ) (mA)
Vdo (Typ) (mV)
Accuracy (%)
Noise (uVrms)
PSRR @ 100KHz (dB)
Output Capacitor Type
Operating Temperature Range (C)
LM350-N LM109 LM138 LM140K LM309 LM338
3    1    5    1    3    5   
Adjustable Output    Fixed Output    Adjustable Output    Fixed Output    Fixed Output    Adjustable Output   
4.2    7.1    4.2    17.6    7.1    4.2   
35    35    40    35    35    40   
  5      5
1.25    5    1.24    5    5    1.24   
32    5    32    15    5    32   
0.05    5.2    0.045    7    5.2    0.045   
2300    3000    3000    2500    1950    2700   
3    4    4    4    5    2.4   
13    40    37    40    40    37   
40    64    10    50    64    10   
Non-Ceramic    Ceramic
N/A    N/A    Ceramic
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
0 to 125    -55 to 150    -55 to 125    -55 to 125    0 to 125    0 to 125   
3TO-220    2TO-3
2TO-3    2TO-3    2TO-3