MAX666CSA+

MAX666CSA+ application field and working principle

The MAX666CSA+ is a versatile and high performance low-dropout (LDO) linear voltage regulator for consumer and industrial applications. It provides a regulated output voltage of 5.0 V from a 4.5 V to 35 V input voltage range. The device is capable of sourcing up to 100 mA of output current and requires no external components. To optimize power efficiency, the MAX666CSA+ includes a low-power shutdown mode with accurate start-up control timing.

The MAX666CSA+ linear voltage regulator is suitable for a wide range of applications such as power-supply with high current requirements, portable equipment, general purpose voltage regulation and point-of-load regulation. It is also suitable for automotive, medical, military and general-purpose applications.

Features

• Up to 100 mA output current
• Low-power shutdown mode
• Accurate start-up control timing
• Industrial and consumer applications
• Wide input voltage range (4.5 V to 35 V)
• High power efficiency

Pin Configuration

The MAX666CSA+ IC comes in a TO-92 package. The pin configuration for the MAX666CSA+ is shown in Figure 1.

Figure 1: MAX666CSA+ Pin Configuration

Application Circuit

The application circuit of the MAX666CSA+ is shown in Figure 2.

Figure 2: MAX666CSA+ Application circuit

Working Principle

The MAX666CSA+ is a low-dropout (LDO) voltage regulator designed to regulate a power supply to provide a stable, regulated output voltage with a wide input voltage range. When the input voltage is greater than the output voltage, the voltage regulator will drop the excess voltage. This drop is known as the dropout voltage, which is typically on the order of a few hundred millivolts. The dropout voltage is the difference between the input and output voltages at which the regulator is no longer able to maintain its regulated output voltage.

When the input voltage is applied to the MAX666CSA+, it passes through the pass transistors and is regulated by the error amplifier. The output voltage of the regulator is determined by the voltage reference, which is adjusted by an external resistor network. The pass transistors are the key components to regulate the output voltage – they control the current flow through the circuit, which determines the output voltage.

The MAX666CSA+ is designed to be highly efficient, with low quiescent current and high power efficiency. It also features a low-power shutdown mode, to reduce power consumption during periods of low demand. In addition, the device features accurate start-up control timing to ensure reliable and clean power on start-up.

Conclusion

The MAX666CSA+ is a versatile and high performance low-dropout (LDO) linear voltage regulator for consumer and industrial applications. It provides a regulated output voltage of 5.0 V from a 4.5 V to 35 V input voltage range. The device is capable of sourcing up to 100 mA of output current and requires no external components. To optimize power efficiency, the MAX666CSA+ includes a low-power shutdown mode with accurate start-up control timing.