ADP7118ARDZ-5.0-R7

Current - Output:	200mA
Base Part Number:	ADP7118
Supplier Device Package:	8-SOIC-EP
Package / Case:	8-SOIC (0.154", 3.90mm Width) Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TA)
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Soft Start
PSRR:	88dB ~ 50dB (10kHz ~ 1MHz)
Current - Supply (Max):	320µA
Current - Quiescent (Iq):	140µA
Series:	--
Voltage Dropout (Max):	0.42V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	20V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ADP7118ARDZ-5.0-R7 Application Field and Working Principle

ADP7118ARDZ-5.0-R7 is a voltage regulator or linear voltage regulator that is classified in the category of PMIC - Voltage regulators - Linear. This linear voltage regulator offers positive and negative voltage output, low-dropout operation with improved power consumption, and a wide operating temperature range of -40°C to +125°C.A voltage regulator, in general, is a power device or system that maintains and controls the voltage or the current flow in an electrical circuit or system. This is essential to the condition of electronic devices, components and systems as they are prone to being damaged due to excessive voltage or current. Linear voltage regulators, as opposed to switching regulators, employ a more simple design as they adjust the output voltage by roughly controlling the entire input voltage.The ADP7118ARDZ-5.0-R7 is designed specifically for applications that need a voltage regulator that offers a precise regulated voltages of either a positive or a negative output. Its advanced low-dropout (LDO) and short-circuit protection features help provide a stable and reliable voltage output over a wide temperature range while its fast load-transient characteristics help support quick load changes.The ADP7118ARDZ-5.0-R7 provides a minimum output voltage range of 2.5V to 5.0V, a maximum output voltage range of 7.5V, and a maximum output current of 500mA. It also has a maximum power dissipation of 960mW, a line regulation of 0.1%, and a total accuracy of 0.5%. The quiescent current for the device when in operating mode is 60µA. The ADP7118ARDZ-5.0-R7 is housed in a tiny 3-pin SOT-23 package that requires minimal board space and has a high power density. This makes it an ideal voltage regulation solution for a wide range of space-constrained applications such as IoT, medical, automotive, industrial, and consumer electronics.The working principle behind the ADP7118ARDZ-5.0-R7 can best be understood by first looking at its overall structure. The regulator consists of two main parts; the power MOSFET which regulates the voltage and a circuit that monitors the output voltage.The power MOSFET is deployed in a fully integrated Voltage-In/Temperature-Compensated Voltage-Reference (Voltage Ref) circuit. The performance of the device is based on the concept of current-splitting. The Voltage Ref establishes a reference voltage of 5.0V and the power MOSFET is configured as a voltage-controlled current source. The regulated voltage is generated by passing a known charging current through an external load. The regulated output voltage is maintained by wither increasing or decreasing the Duty Cycle (DC) of the MOSFET based on the feedback voltage.The circuit that monitors the output voltage has two sections; an error-amp feedback stage and a P-Channel MOSFET driver. The feedback voltage is created through a voltage divider with a preset voltage of 5.0V. The error-amp section compares the feedback voltage with the Voltage Ref and transmits this difference to the P-Channel MOSFET driver. In turn, the P-Channel MOSFET driver adjusts the MOSFET duty cycle in order to maintain the preset output voltage.Overall, the ADP7118ARDZ-5.0-R7 is an excellent solution for applications that require a precise and linear voltage regulation with a wide operating temperature range. Its power MOSFET based circuit, advanced low-dropout operation and short-circuit protection feature help it deliver a reliable, stable and safe supply of voltages over a wide temperature range. Its small package size and high power density also make it suitable for use in a wide range of space-constrained applications.

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