LM7912集成电路（IC）的稳压器-线性规格书PDF中文资料

LM7912属于集成电路（IC）的稳压器-线性。由德州仪器制造生产的LM7912稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。

FEATURES

• Thermal, Short Circuit and Safe Area

Protection

• High Ripple Rejection

• 1.5A Output Current

• 4% Tolerance on Preset Output Voltage

DESCRIPTION

The LM79XX series of 3-terminal regulators is

available with fixed output voltages of −5V, −12V, and

−15V. These devices need only one external

component—a compensation capacitor at the output.

The LM79XX series is packaged in the TO-220 power

package and is capable of supplying 1.5A of output

current.

These regulators employ internal current limiting safe

area protection and thermal shutdown for protection

against virtually all overload conditions.

Low ground pin current of the LM79XX series allows

output voltage to be easily boosted above the preset

value with a resistor divider. The low quiescent

current drain of these devices with a specified

maximum change with line and load ensures good

regulation in the voltage boosted mode.

For applications requiring other voltages, see LM137

datasheet.