MC78PC28NTR集成电路（IC）的线性+开关稳压器规格书PDF中文资料

MC78PC28NTR属于集成电路（IC）的线性+开关稳压器。由安森美半导体公司制造生产的MC78PC28NTR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。

The MC78PC00 are a series of CMOS linear voltage regulators with high output voltage accuracy, low supply current, low dropout voltage, and high Ripple Rejection. Each of these voltage regulators consists of an internal voltage reference, an error amplifier, resistors, a current limiting circuit and a chip enable circuit.

MC78PC00 Features:

• Ultra−Low Supply Current: typical 35 A in ON mode with no load.

• Standby Mode: typical 0.1 μA.

• Low Dropout Voltage: typical 0.2 V @ IOUT = 100 mA.

• High Ripple Rejection: typical 70 dB @ f = 1 kHz.

• Low Temperature−Drift Coefficient of Output Voltage:

typical ±100 ppm/°C.

• Excellent Line Regulation: typical 0.05/V.

• High Accuracy Output Voltage: ±2.0.

• Fast Dynamic Response to Line and Load.

• Small Package: SOT−23 5 leads.

• Built−in Chip Enable circuit (CE input pin).

• Identical Pinout to the LP2980/1/2.

• Pb−Free Packages are Available

MC78PC00 Applications:

• Power source for cellular phones (GSM, CDMA, TDMA), Cordless

Phones (PHS, DECT) and 2−way radios.

• Power source for domestic appliances such as cameras, VCRs and

camcorders.

• Power source for battery−powered equipment