TLV70029DSER

Current - Output:	200mA
Base Part Number:	TLV70029
Supplier Device Package:	6-WSON (1.5x1.5)
Package / Case:	6-WFDFN
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	68dB (1kHz)
Current - Supply (Max):	270µA
Current - Quiescent (Iq):	55µA
Series:	--
Voltage Dropout (Max):	0.25V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.9V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Overview

The TLV70029DSER is a 3.3 V low-dropout (LDO) voltage regulator from Texas Instruments. This series of linear regulator provides an adjustable output voltage between 1.205 V and 5.5 V with a programmable output current in the range up to 500 mA. It is ideal for providing a stable voltage supply to systems operating from unregulated power sources or other sources of electrical noise. It includes an internal power transistor, two low-noise reference voltage sources, an on-board temperature sensor, and a pair of protection features.

Features

The TLV70029DSER regulator features a low-dropout voltage of 320 mV at 300 mA, zero reverse current and minimum output noise. Its adjustable output voltage is programmable through an external resistor, while its output current is adjustable by an external potentiometer. The TLV70029DSER also provides a Soft-Start pin which enables the device to regulate its output voltage smoothly. Other features include an integrated error amplifier and an on-board temperature sensor which monitors the thermal conditions of the component and supports thermal protection. Additionally, the TLV70029DSER implements an openloop and short circuit protection.

Applications

The TLV70029DSER series of voltage regulators is suitable for use in various noisy power sources and systems that require stable, low-noise output voltage. Due to its wide range of programmable output voltage and current, the TLV70029DSER is well-suited to applications such as digital audio, digital photography and image processing, wireless power management, medical devices, and point-of-load power supplies.

Working Principle

The TLV70029DSER provides a highly accurate and low-noise output voltage for a variety of applications. The device uses a PNP resistor managed power transistor, with an internal error amplifier, and a pair of low-noise reference voltage sources that provides a precise ground reference and a feedback voltage readout. This voltage reference is used in conjunction with an external resistor divider to program the output voltage of the regulator. A current control circuit provides a sense voltage that correlates to the output current of the regulator and, when matched with the appropriate components, programs the required output current. The Soft-Start feature prevents output overshoot and oscillations while the device is coming up to regulate its voltage. The TLV70029DSER’s on-board temperature sensor monitors the device’s temperature and ensures that the regulator does not overheat. When operating from a noisy power source, the TLV70029DSER’s on-board features, such as the integrated error amplifier, the low-noise reference voltage sources, and the soft-start function, ensure that the device supplies the system with a clean and accurate voltage source. The device is also protected from input reverse current and output short circuit and openloop conditions.

Conclusion

The TLV70029DSER from Texas Instruments is an adjustable voltage regulator ideal for providing a stable voltage supply to systems operated from noisy power sources. It implements a wide range of features to ensure that the device supplies a clean, accurate, and low-noise output voltage. This device is suitable for applications such as digital audio, digital photography and image processing, wireless power management, medical devices, and point-of-load power supplies.

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