TPS72325DBVTG4

Current - Output:	200mA
Base Part Number:	TPS72325
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	65dB ~ 48dB (1kHz ~ 10kHz)
Current - Supply (Max):	500µA
Current - Quiescent (Iq):	200µA
Series:	--
Voltage Dropout (Max):	0.5V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	-2.5V
Voltage - Input (Max):	-10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Negative
Part Status:	Active
Packaging:	Tape & Reel (TR)

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The Texas Instruments TPS72325DBVTG4 is a PMIC (Power Management Integrated Circuit) that provides a highly efficient voltage regulator solution for small, low-power applications and is classified as a Linear Voltage Regulator. This device features an ultra-low quiescent current (75μA), extremely high efficiency (up to 95%), and small package size (helps save board space). The device is especially well-suited for small-to-medium power supplies and applications where input source has large ripple or voltage droop.Features of TPS72325DBVTG4The TPS72325DBVTG4 operates over a wide operating temperature range between –40°C and +125°C and has a 1.8V to 6V input voltage range. The device has isolation of 2.6mm, enabling designers to meet the boundary requirements of certain end-products. Its 25μA (1.2V–25V) maximum quiescent current makes it a high-efficiency choice for battery-powered applications. Moreover, the adjustable-output version of the IC (TPS72325DBVTG4) provides higher efficiency than fixed-output voltage regulators and provides a very flexible design.Additionally, the device includes a power-good indicator that can assist in monitoring and improving the system\'s response especially in power-up/power-down sequence management and battery switchover events. The power-good indicator has a 0.2V hysteresis, preventing false alerts and oscillations. The low minimum output voltage ensures there is no degradation of the line/load regulation and of the peak current limits which are necessary for proper logic levels over the line or load changes.Application FieldThe low quiescent current, high efficiency and small package size make the TPS72325DBVTG4 an attractive choice for the following applications:1. Portable battery-powered applications 2. Energy-optimized designing of existing applications 3. Industrial applications connecting to multiple voltage rail voltages 4. Portable/wearable/IoT/IMU (Inertial Measurement Unit) applications Working PrincipleThe TPS72325DBVTG4 is a low power linear voltage regulator. It is based on a standard closed-loop (linear) topology, which ensures a stable output voltage in response to input voltage droop or load transients. The device implements an internal positive voltage-regulation loop which is formed by a series combination of a reference, an error amplifier and an output driver. The voltage regulator regulation loop is enabled when the input voltage is larger than the reference voltage by a certain amount, typically 3mV. This allows for excellent low-voltage performance when compared to similar linear regulator devices. When the input voltage is above its minimum operating voltage, the regulator will become active and the output voltage will maintain a stable value when there is a line or load disturbance. The circuit\'s output is regulated by the output of the error amplifier. During the active state, the current through the error amplifier is proportional to the difference between the reference voltage and the output voltage. If the output voltage increases, the on-resistance of the error amplifier will increase causing a reduction in the output voltage. Inversely, if the output voltage level drops, so does the on-resistance and the output voltage increases. This action results in a steady output voltage when presented with line or load disturbances. In order to optimize efficiency, the device features a sleep mode, which is controlled by the enable pin. In this mode, the quiescent current will drop below 25μA, which will decrease power dissipation when the system remains idle for long periods of time.ConclusionThe TPS72325DBVTG4 PMIC Linear Voltage Regulator implements an efficient and stable voltage regulation loop, making it well suited for a variety of applications, such as portable battery-powered applications, energy-optimized designs of existing applications and industrial applications with multiple voltage rails. The device is also optimized for efficiency, with a 25μA quiescent current and a sleep mode to reduce power dissipation when the system is idle. This makes it an excellent choice for designers looking for a cost-effective, highly efficient low-power solution.

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