MC33761集成电路（IC）的线性+开关稳压器规格书PDF中文资料

MC33761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MC33761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 MC33761 is an Low DropOut (LDO) regulator featuring excellent noise performances. Thanks to its innovative design, the circuit reaches an impressive 40 VRMS noise level without an external bypass capacitor. Housed in a small SOT−23 5 leads−like package, it represents the ideal designer’s choice when space and noise are at premium. The absence of external bandgap capacitor accelerates the response time to a wake−up signal and keeps it within 40 s (in repetitive mode), making the MC33761 as a natural candidate for portable applications.

特性 Features

• Ultra−Low Noise: 150 nV/√Hz @ 100 Hz, 40 VRMS

100 Hz−100 kHz Typical, Iout = 60 mA, Co = 1.0 F

• Fast Response Time from OFF to ON: 40 s Typical at a 200 Hz

Repetition Rate

• Ready for 1.0 V Platforms: ON with a 900 mV High Level

• Nominal Output Current of 80 mA with a 100 mA Peak Capability

• Typical Dropout of 90 mV @ 30 mA, 160 mV @ 80 mA

• Ripple Rejection: 70 dB @ 1.0 kHz

• 1.5 Output Precision @ 25°C

• Thermal Shutdown

• Vout Available at 2.5 V, 2.8 V, 2.9 V, 3.0 V, 5.0 V

• Operating Range from −40 to +85°C

• Dual Version is Available as MC33762

• Pb−Free Packages are Available

Applications

• Noise Sensitive Circuits: VCOs RF Stages, etc.

• Bursting Systems (TDMA Phones)

• All Battery Operated Devices