LM2788MM-1.5/NOPB Integrated Circuits (ICs)

Voltage - Output (Min/Fixed):	1.5V
Base Part Number:	LM2788
Supplier Device Package:	8-VSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Synchronous Rectifier:	No
Frequency - Switching:	500kHz
Current - Output:	120mA
Voltage - Output (Max):	--
Series:	--
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	2.6V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Charge Pump
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction to LM2788MM-1.5/NOPB

The LM2788MM-1.5/NOPB is an application field and working principle of a PMIC (Power Management IC) voltage regulator. It belongs to the DC DC switching regulator family. LM2788MM-1.5/NOPB is a compact, low power regulator, designed to provide up to 1.5A of constant current to the load from a voltage source of up to 12V. It offers a wide range of features and is highly flexible in terms of output voltage, current limit, and input power management.

Features and Benefits

The LM2788MM-1.5/NOPB comes with numerous features and benefits:- Low Operating Power: It is designed to support low to medium power applications, consuming only a small amount of power when operating. It allows for up to 12V of input voltage and provides up to 1.5A of current. - High Efficiency: The LM2788MM-1.5/NOPB has very high efficiency, providing up to 96% of output power with low input voltages.- Compact Size: The device is provided in a small form factor, making it ideal for space restricted applications.- Overload and Short Circuit Protection: The LM2788MM-1.5/NOPB provides a thermal and short circuit protection which prevents the output voltage from exceeding its maximum limit and damaging the device and connected components. - Frequency Foldback Protection: To protect the device in the event of an over-current condition, the LM2788MM-1.5/NOPB provides frequency foldback protection. If the device exceeds its current limit, the duty cycle and switching frequency will automatically be reduced, thus preventing further damage.

Applications

The LM2788MM-1.5/NOPB can be used in a variety of applications, such as:- Power Supplies: The device can be used as a primary or secondary power supply for powering high-power components. It can provide an adjustable output voltage to the load for efficient and reliable operation in a wide range of applications.- Battery Charging: The LM2788MM-1.5/NOPB can be used to charge batteries of different types, such as Li-ion, Li-polymer, NiMH, and NiCd batteries. It can regulate the charge rate and current limit to ensure safe charging.- Automotive Applications: This device can be employed as a voltage regulator in automotive applications, such as engine control units, fuel injection systems, and power steering systems. - Medical Applications: The device can be used in medical applications, such as patient monitors, dialysis machines, and cardiac pacemakers.

Working Principle

The LM2788MM-1.5/NOPB is a DC-DC switching regulator which operates using pulse-width modulation (PWM). It switches the power device on for a specific period of time and then off for a specific time using a switching cycle. This cycle is repeated at a fixed frequency based on the parameters set for the output voltage and current limit. The PWM conversion regulates the output voltage and current as desired. The current limit is controlled dynamically to achieve fast response and reliable protection from over-current events. The operating frequency can be programmed via an external resistor or externally adjusted via a voltage input. This allows for optimized efficiency and stability. The device is also equipped with an enable pin which can be used to switch it off when not required, thereby reducing unwanted power consumption.

Conclusion

The LM2788MM-1.5/NOPB is an application field and working principle of a PMIC (Power Management IC) voltage regulator, belonging to the DC DC switching regulator family. It is a low power, compact device designed to provide up to 1.5A of constant current from an input voltage of up to 12V. It offers numerous features and benefits such as low power consumption, high efficiency, and overload and short circuit protection. The device is ideal for a variety of applications such as power supplies, battery charging, automotive, and medical. It operates using pulse-width modulation with an adjustable frequency and has an enable pin for reduced power consumption when not required.

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