LT1431CZ#PBF

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LT1431CZ#PBF is a two terminal adjustable shunt regulator. It is classified in PMIC (Power Management IC) – Voltage Reference category. It provides an adjustable reference voltage output and a sink current, allowing many varied applications.. LT1431 provides 3.2V to 30.5V adjustable output range and up to 250 mA peak current. The LT1431CZ#PBF is ideal for low-noise, high-precision and low-dropout voltage reference applications.

The LT1431CZ#PBF features a bandgap cell which is set by the resistive (R1) and capacitive (C1) network connected to the external pins. An internal current source drives the bandgap cell, while the adjustable output voltage is achieved by connecting the Collector of the NPN transistor and the Bandgap Cell. The voltage across an external R2 resistor is compared to an internally held reference voltage to regulate the transistor (Q1) base current, providing constant output voltage.

Following are some of the advantages of the LT1431CZ#PBF:

• High accuracy and low temperature drift
• Wide power supply voltage range
• Extremely low dropout voltage
• Low power consumption

The LT1431CZ#PBF has a wide range of uses. It has been used for various reference voltage and current applications, such as:

• Voltage references in battery-operated devices
• Voltage regulation in laptop computers
• Stable voltage even in low temperature
• Regulated supply of power in digital circuits
• High precision A/D and D/A converters
• Precision op-amps with wide supply range

In addition, the LT1431CZ#PBF can be used to provide a regulated, low-noise output in high speed systems, such as flash RAM, CCTV system and PC mainboard power management. It is also widely used for post regulation of regulators, error amplifiers and principal regulators.

The LT1431CZ#PBF is also very stable and can provide accurate output over a wide temperature range. It offers excellent line regulation, low input and load current ripple, low power dissipation and a high stability over temperature. The LT1431CZ#PBF has a low output offset voltage and low output impedance, making it suitable for use in applications requiring high precision and accuracy.

Furthermore, the LT1431CZ#PBF has a wide operating temperature range, enables flexible operation in a wide range of environments, as it is able to work at temperatures ranging from -40°C to 85°C. With its wide adjustable voltage range, low input and load current ripple, low power dissipation and a high stability over temperature, the LT1431CZ#PBF is an ideal choice for many low noise and high precision voltage reference applications.

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