TLV1117IKTTR

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The TLV1117IKTTR is a linear voltage regulator from Texas Instruments, classified in the Product Category of PMIC - Voltage Regulators - Linear. TLV1117IKTTR is a low current, low dropout linear regulatot. It features a wide input voltage range from 1.8 V to 6.5 V, output voltage (Vout) adjustable from 1.2 V to 6.5 V, and ultra-low 0.1 μA quiescent current. The output voltage accuracy is ±1.5 % and the load/-line regulation is ±1 %. Additionally, it features current limit, thermal shut down protection, and reverse current protection.

TLV1117IKTTR has a wide range of application fields such as power supply for wireless electronic devices, wireless communication devices, industrial communication systems, home appliances, mobile phones, car audio systems, medical applications and more. It is suitable for automotive applications and a variety of portable battery powered applications.

The working principle of TLV1117IKTTR is fairly simple. It is a low quiescent current linear voltage regulator containing an N-channel MOSFET pass element and biasing circuitry to control its operation. TLV1117IKTTR regulator consists of a precision voltage reference, an error amplifier, a logic control section, a pass transistor, and an overcurrent protection element. The error amplifier is used to compare between its output voltage (Vout) and the voltage drop across the MOSFET pass element. The MOSFET pass transistor will then adjust its conductance to maintain an output voltage at the same level of the reference voltage. This is the so-called “close loop” operation of the TLV1117IKTTR regulator.

Lastly, the TLV1117IKTTR regulator has a built-in thermal protection to offer over temperature shutdown. The thermal protection is triggered when the junction temperature of the TLV1117IKTTR regulator reaches a predetermined value. Once triggered, the thermal protection initiates a shutdown of the regulator and no current can pass through the pass element.

In summary, the TLV1117IKTTR is a low current, low dropout linear voltage regulator from Texas Instruments that is used in a wide variety of applications. Its wide input voltage range, adjustable output voltage, and ultra-low quiescent current make it an ideal solution for automotive and portable battery powered applications. Its working principle is quite simple, based on the “close loop” ooperation of the regulator and its over temperature protection that initiates a shutdown of the regulator when the temperature reaches a predetermined value.

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