TLV1117-18IKVURG3 Integrated Circuits (ICs)

Voltage Dropout (Max):	1.3V @ 800mA
Base Part Number:	TLV1117-18
Supplier Device Package:	TO-252-3
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	75dB (120Hz)
Current - Output:	800mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
Voltage - Input (Max):	15V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Cut Tape (CT)

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TLV1117-18IKVURG3 is a highly oversampled, digitally-controlled, linear regulator (DC-DC) for powering and powering backup portable applications. It provides a solution for supporting single-cell Li-ion and Li-polymer batteries, and supplies up to 200 mA. The key features of the TLV1117-18IKVURG3 include its high efficiency, small size, ultra-low chip quiescent current, low cost, and ease of programming, making it ideal for targeting portable applications. The TLV1117-18IKVURG3 is a perfect choice for embedded applications requiring a low-voltage power supply in which an external, physically size-constrained, compact power solution is desired. It operates over an input voltage range of 2.5 V to 6 V and offers an output voltage of 1.2 V - 5.5 V. The device is rated at 200 mA output current, making it suitable for powering microprocessors and device peripherals. It features a low quiescent current of 10 μA and a low shutdown current of 1 μA. It also provides a programmable soft-start functionality, allowing for controlled output voltage ramp-up upon startup.Apart from its ability to provide a power source in applications requiring a compact solution, the TLV1117-18IKVURG3 offers various integrated features that are designed to streamline the development of portable applications. The integrated Buck-Boost mode enables automatic step-up or step-down output voltage depending on the input voltage. This is especially useful when operating from a single Li-ion or Li-polymer battery, as the input voltage will never exceed the battery\'s over-discharge voltage. In order to ensure the robustness of the system, the device includes features such as thermal protection, over-current protection and short circuit protection functions. For further functional safety, current-limiting and thermal-shutdown are also implemented to protect the downstream applications.Application FieldThe TLV1117-18IKVURG3 is suitable for a wide range of applications from consumer electronics, automotive and industrial control to medical products. The device can be used to power small microcontrollers, DSPs, bluetooth modules, RF power amplifiers, motor drivers and various other peripherals. It is highly suitable for wearable device application such as health monitoring, smart watches and activity trackers. It is capable of regulating the input voltage to any programmed output voltage while maintaining high efficiency across the whole input voltage range and thus reducing power dissipation.Working PrincipleThe TLV1117-18IKVURG3 is a digitally-controlled linear regulator. It operates over an input voltage range of 2.5 V to 6 V and offers an output voltage of 1.2 - 5.5 V. It features high-side power switches and is digitally controlled through a serial interface. It uses an internal digital feedback to regulate the output voltage.The device internally contains a low-dropout (LDO) regulator and a dynamic voltage scaling (DVS) converter. The DVS provides input voltage regulation and allows efficient operation at low input voltages. It also allows the output voltage to be adjusted according to the voltage profile of the input voltage. The current-limited internal LDO is used for final output voltage regulation. The device also includes safety features such as over-current protection, thermal protection and short circuit protection. In a nutshell, the TLV1117-18IKVURG3 provides a single-cell Li-ion and Li-polymer support, low quiescent current, current limitation, and advanced control and protection features. It is the perfect choice for applications requiring a low-voltage power supply in size-constrained, portable applications.

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