LP5951MGX-1.3/NOPB

Current - Output:	150mA
Base Part Number:	LP5951
Supplier Device Package:	SC-70-5
Package / Case:	5-TSSOP, SC-70-5, SOT-353
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Short Circuit
Control Features:	Enable
PSRR:	60dB ~ 50dB (100Hz ~ 10kHz)
Current - Supply (Max):	70µA
Current - Quiescent (Iq):	55µA
Series:	--
Voltage Dropout (Max):	0.35V @ 150mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.3V
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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LP5951MGX-1.3/NOPB Application Field and Working Principle

The LP5951MGX-1.3/NOPB is a high-accuracy, low-power, 3-channel, low-voltage, PWM-controlled buck voltage regulator. This device can serve as a general-purpose power supply for applications requiring a low noise, low ripple and low power solution. It is well suited for use in applications such as multi-channel power supply rail generation and portable appliance batteries. The LP5951MGX-1.3/NOPB is a PMIC – Voltage Regulator – Linear (PMIC-VR-L) device. It provides one buck regulator that is adjustable from 0.5V to 3.3V and two buck converters adjustable from 0.3V to 3.3V. The device also contains a temperature monitor and two precision current monitors with an adjustable threshold trip point up to +125C. Working PrincipleThe LP5951MGX-1.3/NOPB is a PWM-controlled voltage regulator, which means that the output voltage is controlled by a feedback circuit that is driven by a PWM input signal. The device measures the input voltage and then adjusts the duty cycle of the PWM signal in order to maintain the desired output voltage. The device uses an internal voltage reference to accurately measure the input voltage, and an external feedback circuit to provide a signal to the PWM comparator. The feedback circuit includes resistive divider networks, which allow the device to be programmed to output any voltage from 0.5V to 3.3V. The LP5951MGX-1.3/NOPB also has an On-Off Control input that can be used to turn the device off and on. When the device is off, it automatically enters a low-power shutdown mode with minimal current consumption, which makes it ideal for applications where lower power consumption is desired. In summary, the LP5951MGX-1.3/NOPB is a low-voltage, PWM-controlled, buck voltage regulator that is well suited for applications such as multi-channel power supply rail generation and portable appliance batteries. It includes an adjustable output range from 0.5V to 3.3V, a temperature monitor, and two precision current monitors. It is a PMIC-VR-L device that is highly efficient and offers low noise and low ripple operation.

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