LT1129CT-5#06PBF

The LT1129CT-5#06PBF is a low power source regulated voltage regulator manufactured by Linear Technology. It is a 5V output, low dropout (LDO) voltage regulator with a wide input voltage range of 1.5V to 20V. The regulator is ideal for automotive and industrial applications requiring high efficiency, low noise and excellent line and load regulation. The LT1129CT-5#06PBF is available in a variety of package configurations, making it suitable for a wide range of applications.

Applications

The LT1129CT-5#06PBF is well-suited for a variety of applications, including:

• Battery-powered systems
• SMPS post-regulators
• Linear regulators
• Power conversion for PC, digital and telecom applications
• Charger power supplies
• Portable electronics

Features

The LT1129CT-05#06PBF offers a wide range of features including:

• no minimum load required
• low dropout of only 0.22V at 200mA output current
• low noise of only 12µVrms
• high power supply rejection of 60dB
• up to 1.5A peak current output
• TTL shutdown current capability
• programmable output voltage range of 1.25V to 5V
• 5V output accuracy of ±3%

Working Principle

The LT1129CT-05#06PBF is an LDO (low dropout) voltage regulator. It utilizes a PNP pass transistor and internal compensation to regulate an output voltage. The input voltage must be higher than the output voltage, and the difference between the two is the dropout voltage of the regulator. The pass transistor is controlled by a feedback loop, with the output voltage of the regulator being monitored by the chip\'s internal comparator. The comparator compares the voltage on the output pin to the internal reference voltage to adjust the current through the pass transistor. This effectively regulates the output voltage regardless of load changes or input voltage variations.

The LT1129CT-05#06PBF is an extremely efficient regulator, with 85% efficiency at 200mA output current. This helps to reduce the overall power consumption of the system, which may be especially important in battery-powered applications. The regulator also features a low shutdown current of only 250µA, which helps to conserve battery life. The regulator also features low dropout of only 0.22V at 200mA, making it suitable for applications with tightly regulated voltages.

Conclusion

The LT1129CT-05#06PBF is a low power source regulated voltage regulator manufactured by Linear Technology. It is a 5V output, low dropout (LDO) voltage regulator with a wide input voltage range of 1.5V to 20V. The regulator is ideal for automotive and industrial applications requiring high efficiency, low noise and excellent line and load regulation. It features no minimum load requirement, low dropout of only 0.22V at 200mA output current, and a programmable output voltage range of 1.25V to 5V. The LT1129CT-05#06PBF is an extremely efficient regulator, with 85% efficiency at 200mA output current and a low shutdown current of only 250µA.