TC1266VOA

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Applications:	Converter, PCI Peripheral Card Applications
Voltage - Input:	4.3 V ~ 5.5 V
Number of Outputs:	1
Voltage - Output:	3.3V
Operating Temperature:	-5°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	TC1266

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PMIC - Voltage Regulators - Special Purpose

TC1266VOA is a special purpose voltage regulator which is commonly used in a wide variety of applications. It is designed to provide a constant output voltage regardless of significant fluctuations in line, load and temperature conditions to ensure maximum system performance. This voltage regulator can be used in a wide range of power management, industrial and communication related applications including, but not limited to, telecom, routers, switches, modems, base stations and power supplies.

Features of the TC1266VOA

There are a number of features that make the TC1266VOA suitable for a variety of applications including low noise operation, low dropout, temperature stability, input and output range flexibility, current limiting, and transient protection. Additionally, the regulator is designed for safety and is certified for safety according to TUV, CSA, UL, and IEC standards.The output voltage can be factory adjusted from 0.3V up to 5V and is also adjustable via an external resistor divider. The design of the regulator also allows for load regulation of better than ±3% over the full load and line range, making it suitable for use in applications with dynamic and fluctuating loads.The TC1266VOA also features a wide input voltage range of 3V to 36V, making it suitable for applications with varying input voltages. The device also offers a fast transient response time and is immune to output voltage transients due to its low quiescent current and high frequency of operation.

Working Principle of the TC1266VOA

The TC1266VOA uses a switching regulator topology, also known as a Buck converter, to provide a constant, stable output voltage. The regulator works by converting a higher input voltage to a lower output voltage by switching the input voltage on and off in a regular pattern. The on/off pattern is controlled by the on time (t1) which is the time that the input voltage is switched on and the off time (T2) which is the time that the input voltage is switched off.The switching regulator topology has a number of advantages compared to linear voltage regulators, including higher efficiency at lower output voltages, lower input current ripple, and higher power dissipation. However, the regulation of this topology typically requires more complex circuitry than a linear regulator, which can increase the cost of the design.The TC1266VOA is designed to provide excellent line, load, and temperature regulation over a range of operating conditions. It achieves this by operating in an adjustable PWM (pulse width modulation) mode. The chip has an internal or external clock signal to control the switching frequency of the device. The internal clock signal has a frequency of 500KHz while the external clock signal can range from 100KHz to 1000KHz.The TC1266VOA employs a voltage sensing circuit to detect the output voltage of the device. The voltage sensing circuit consists of an internal or external voltage reference, a voltage divider, an error amplifier and a loop compensation network. The voltage reference provides the reference voltage for the voltage divider which then feeds the error amplifier. This allows the error amplifier to compare the actual output voltage with the reference voltage and then adjusts the switching frequency to ensure that the output voltage is maintained at the set point.

Applications of the TC1266VOA

The TC1266VOA is suitable for a wide range of applications including automotive, telecommunications, servers, workstations, industrial and consumer. It is ideal for powering digital components, providing a constant supply for sensitive systems, and for creative new applications.The TC1266VOA is a highly flexible solution for applications which need a stable output voltage. It is designed to provide excellent line, load, and temperature regulation over a range of operating conditions, while still offering high efficiency and low noise operation. Its wide input voltage range makes it suitable for a number of applications, while its adjustable output voltage range makes it even more versatile. In addition, its safety certifications make it an ideal choice for safety-critical applications.

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