LD6816CX4/28H,315

Current - Output:	150mA
Base Part Number:	LD6816
Supplier Device Package:	4-WLCSP (0.76x0.76)
Package / Case:	4-XFBGA, WLCSP
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Transient Voltage
Control Features:	Enable
PSRR:	55dB (1kHz)
Current - Supply (Max):	250µA
Current - Quiescent (Iq):	100µA
Series:	--
Voltage Dropout (Max):	0.075V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.8V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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LD6816CX4/28H,315 Application Field and Working PrincipleLD6816CX4/28H,315 is a linear voltage regulator IC from a series of fixed/adjustable output products from LD Electronics. It is a low-noise, low-temperature drift voltage regulator with four independent adjustable linear outputs. In terms of feature set, the LD6816CX4/28H,315 exhibits excellent transient response and maximum output characteristics with minimal power loss.Small footprint is another great advantage of the LD6816CX4/28H,315, as they allow users to replace as many as four regulators in a single package. Other features it offers are continuously adjustable output voltages, near-zero output voltage drift, short circuit protection, current limitation and thermal shut down.Applications:The LD6816CX4/28H,315 is commonly used in electronic applications demanding for low-noise, low-temperature drift, and highly accurate linear regulation. It is well suited for driving sensitive audio components and LED displays, as well as for board-level power supply regulation, voltage reference, post regulation, servo control and industrial/ aerospace applications.Applications that are not recommended for use include high-reliability control systems (i.e. medical, military), high-voltage ripple current, and automotive applications.Working Principle:The LD6816CX4/28H,315 is designed to deliver a nominal output voltage of either 4V or 28V, depending on the output voltage required by the user. The voltage setting is typically provided by a single resistor, which sets the voltage level of the regulator. An internal Zener diode and bipolar transistor are used to regulate the output voltage.A comparison amplifier is used to sense the VOUT voltage and the output voltage set by the voltage setting resistor. If VOUT is greater than VREF, then the output voltage is decreased; if VOUT is less than VREF, then the output voltage is increased.The output voltage is also monitored by a voltage divider to ensure that it stays within the correct range. The LD6816CX4/28H,315 also provides over-current protection, as well as a thermal shut down feature. It also has a very low output voltage noise, which makes it suitable for driving high-precision audio components.Overall, the LD6816CX4/28H,315 is a low-noise, low-temperature drift linear regulator that works well in various industrial, consumer, and aerospace applications. It provides fast transient response, minimum power loss, and good output characteristics, as well as over-current protection, thermal shut down and a low output voltage noise.

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