TPS7A1650DRBR

Voltage Dropout (Max):	0.5V @ 100mA
Supplier Device Package:	8-SON (3x3)
Package / Case:	8-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Under Voltage Lockout (UVLO)
Control Features:	Enable, Power Good
PSRR:	50dB (100Hz)
Current - Quiescent (Iq):	15µA
Current - Output:	100mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	60V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS7A1650DRBR Application Field and Working Principle

Introduction

TPS7A1650DRBR from TI is an adjustable, micropower, low-noise, fast settling, 400mA CMOS linear voltage regulator. The device delivers efficient regulation with very low quiescent current for handheld devices and other battery powered applications. This device offers very fast transient response and a wide input voltage range of up to 16.5V. It is suitable for both low and high current applications and has the flexibility to be used in a wide variety of applications.

Features

The TPS7A1650DRBR offers accurate and stable operation over a wide range of conditions. It has two available output voltage ranges, one is adjustable between 1.25V and 13.5V and the other between 1.8V and 16.5V. It achieves more than 90% efficiency and is capable of sourcing up to 400mA of current. Furthermore, the device offers fast start-up time with less than 1.5µs response to load step changes. Additional features include low output noise, by using advanced compensation techniques, and low quiescent current of 3μA. The device integrates a power-on reset circuit and reverse current protection as well.

Application Field

The TPS7A1650 has been designed with low noise, fast transient response and high efficiency. This makes it suitable for use in a variety of portable handheld devices like mobile phones, PDAs, digital cameras and other small battery powered applications. It is also suitable for a wide range of industrial applications including instrumentation and communication systems, LED drivers, power supplies, test and measurement equipment and more.

Working Principle

The device has two main sections, the regulating section and the error amplifier. The regulating section consists of the voltage reference, the transistor and the output resistor. The transistor is the main regulating element and it is used to regulate the output voltage by controlling the current flowing through the output resistor.The error amplifier is used to compare the voltage across the output resistor with a reference voltage. If the output voltage deviates from the reference voltage, the error amplifier will produce a voltage that is proportional to the difference between the two. This voltage is then used to control the transistor which adjusts the current flowing through the output resistor. This in turn adjusts the output voltage to the desired level.

Conclusion

The TPS7A1650DRBR is a CMOS linear voltage regulator that is suitable for a range of low and high current applications. It offers high efficiency and a fast settling response with low output noise. The device has two output voltage ranges and is capable of sourcing up to 400mA of current. It is suitable for a variety of handheld and battery powered applications as well as a range of industrial applications. The device is controlled by an error amplifier that compares the output voltage with a reference voltage and adjusts the current flow through the output resistor to stabilise the output voltage.

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