LM2594N-12/NOPB

Voltage - Output (Min/Fixed):	12V
Base Part Number:	LM2594
Supplier Device Package:	8-PDIP
Package / Case:	8-DIP (0.300", 7.62mm)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	150kHz
Current - Output:	500mA
Voltage - Output (Max):	--
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	40V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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LM2594N-12/NOPB Application Field and Working Principle

PMIC - Voltage Regulators - DC DC Switching Regulators are a type of ICs used for various electrical power management tasks. The LM2594N-12/NOPB is a 60V step-down switching regulator, capable of providing up to 1.5A of current. With its wide input voltage range, small size and light weight, the LM2594N-12/NOPB is suitable for many general purpose applications.The LM2594N-12/NOPB is a monolithic switching regulator with power MOSFET integrated on a single chip. In order to reduce EMI issues and minimize component count, a fixed, non-selectable frequency of 156 KHz is used. It offers both current limit and thermal shutdown protection. The LM2594N-12/NOPB can be synchronized to an external clock to reduce the switching frequency, or to reduce noise at certain frequencies.Operating voltage range of the LM2594N-12/NOPB is 4V-60V, and the maximum output current is 1.5A. The output voltage range is adjustable and can be selected from 1.23V to 57V, and the output voltage ripple is usually less than 0.5%. The chip also features excellent line and load regulation, as well as low output noise (<1mV rms).The LM2594N-12/NOPB is extremely efficient, with up to 95% efficiency attainable. It also features a low quiescent current of 0. 5mA for improved power savings. Additional features include an enable pin that can be used to turn the regulator on/off, and short-circuit protection.The LM2594N-12/NOPB is based on a pulse width modulation (PWM) control system. When the input supply is greater than the output voltage, a mosfet switch is associated with an on-chip oscillator to generate a series of pulses that drives the switch. The duty cycle (ratio of on-time to off-time of the switch) of the pulses determines the output voltage. Output voltage is regulated by varying the duty cycle, so that even if the load or input voltage changes, the output voltage remains constant.In conclusion, the LM2594N-12/NOPB is a practical choice for a variety of power management tasks. With its wide input voltage range, adjustable output voltage range, and high efficiency, the LM2594N-12/NOPB is suitable for applications such as general purpose power supplies, DSPs, and microcontrollers. Its low quiescent current and enable pin make it highly efficient, and its thermal and current limit protection ensures reliable power delivery.

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