LM337L_TI 100mA 负电压可调节线性稳压器

LM337L的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：线性和低压降 (LDO) 稳压器
功能描述：100mA 负电压可调节线性稳压器
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LM337L的产品详情：

The LM337L is an adjustable 3-pin negative voltage regulator capable of supplying 100 mA over a –1.2-V to –37-V output range. The LM337L is easy to use and requires only two external resistors to set the output voltage. Both line and load regulation are better than standard fixed regulators. The LM337L is packaged in a standard, easy-to-use TO-92 transistor package.

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 pin is disconnected.

Normally, only a single 1-µF solid tantalum output capacitor is required unless the device is situated more than 6 inches from the input filter capacitors, in which case an input bypass is required. A larger output capacitor can be added to improve transient response. The adjustment pin can be bypassed to achieve very high ripple rejection ratios, which are difficult to achieve with standard 3-pin regulators.

Besides replacing fixed regulators, the LM337L is useful in a wide variety of other applications. Because the regulator is floating and monitors 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.

The LM337L makes a 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 pin to ground, which programs the output to 1.2 V, where most loads draw little current.

The LM337L is available in a standard TO-92 transistor package and a standard SO-8 surface mount package. The LM337L is rated for operation over a –25°C to 125°C range.

For applications requiring output current in excess of 0.5 A and 1.5 A, The LM137 series may be suitable. For the positive complement, the LM117 and LM317L series are options.

LM337L的优势和特性：

Adjustable Output Down to 1.2 V
Ensured 100-mA Output Current
Line Regulation Typically 0.01%/V
Load Regulation Typically 0.1%
Current Limit Constant With Temperature
Eliminates the Need to Stock Many Voltages
Standard 3-Pin Transistor Package
80-dB Ripple Rejection
Output is Short Circuit Protected

LM337L的参数（英文）：

Output options
Adjustable Output, Negative Output
Iout (Max) (A)
0.1
Vin (Max) (V)
-4.2
Vin (Min) (V)
-40
Vout (Max) (V)
-1.2
Vout (Min) (V)
-37
Noise (uVrms)
38
Iq (Typ) (mA)
0.05
Thermal resistance θJA (°C/W)
111
Rating
Catalog
Load capacitance (Min) (μF)
1
Regulated outputs (#)
1
Features
—
Accuracy (%)
1.4
Dropout voltage (Vdo) (Typ) (mV)
2200
Operating temperature range (C)
-25 to 100

LM337L具体的完整产品型号参数及价格（美元）：

LM337L的完整型号有：LM337LM/NOPB、LM337LMX/NOPB、LM337LZ/LFT3、LM337LZ/NOPB、LM337LM、LM337LMX，以下是这些产品的关键参数及官网采购报价：

LM337LM/NOPB，工作温度：-25 to 100，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM337LM/NOPB的批量USD价格：.332（1000+）

LM337LMX/NOPB，工作温度：-25 to 100，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM337LMX/NOPB的批量USD价格：.231（1000+）

LM337LZ/LFT3，工作温度：PropertyValue，封装：TO-92 (LP)-3，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SN，TI官网LM337LZ/LFT3的批量USD价格：.277（1000+）

LM337LZ/NOPB，工作温度：-25 to 100，封装：TO-92 (LP)-3，包装数量MPQ：1800个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SN，TI官网LM337LZ/NOPB的批量USD价格：.332（1000+）

LM337LM，工作温度：-25 to 100，封装：SOIC (D)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-1-235C-UNLIM，引脚镀层/焊球材料：SNPB，TI官网LM337LM的批量USD价格：.429（1000+）

LM337LMX，工作温度：-25 to 100，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-235C-UNLIM，引脚镀层/焊球材料：SNPB，TI官网LM337LMX的批量USD价格：.374（1000+）

LM337L的评估套件：

LM337L的电路图解：

LM337L的评估套件：