LM2585S-12

Voltage - Output (Min/Fixed):	12V
Base Part Number:	LM2585
Supplier Device Package:	DDPAK/TO-263-5
Package / Case:	TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	100kHz
Current - Output:	3A (Switch)
Voltage - Output (Max):	--
Series:	SIMPLE SWITCHER®
Voltage - Input (Max):	40V
Voltage - Input (Min):	4V
Number of Outputs:	1
Output Type:	Fixed
Topology:	Boost, Flyback, Forward Converter
Output Configuration:	Positive
Function:	Step-Up, Step-Up/Step-Down
Part Status:	Obsolete
Packaging:	Tube

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LM2585S-12 is a low-side synchronous buck regulator and is often used in applications to produce a regulated output voltage from low-Input voltage sources such as 5V, 12V, and 24V inputs. The regulator has a 15mΩ high-side switch, allowing it to regulate up to 3.5A at an output voltage as low as 0.8V. It switches at frequencies up to 100kHz and has internal compensation for an optimized loop response.The LM2585S-12 is an Integrated Circuit (IC) featuring a wide input voltage and output voltage range, high accuracy and low operating temperature. It has a wide operating temperature, from -40°C to +125°C, which further increases its accuracy, even under extreme conditions. The regulator features an eight-pin SOIC package and is dual-mode, meaning it can be switched between a regulated mode and an unregulated, linear mode. This makes it suitable for a wide range of applications including power conditioners and low voltage DC-DC converters, battery-powered devices, and Charge Pump applications.The LM2585S-12 has a synchronous PWM control architecture and implements a line-lock feature which allows the regulator to remain operational even when the input voltage exceeds the output voltage by a factor of two. This capability prevents the output voltage from exceeding its pre-programmed limits, which enables the regulator to be used in a wide variety of hazardous or low-temperature applications. The IC also includes over-temperature, over-voltage, and short-circuit protection along with adjustable soft-start, providing a safe and robust operation.The regulator is configured and controlled through the use of external components, such as resistors and switching elements. The regulation is provided by the use of a pulse-width modulation (PWM) signal which is generated by internal logic by comparing the FB pin voltage to the desired regulation voltage. The PWM signal is then used to control the switching elements in the power stage, hence providing a regulated output voltage.The design of the LM2585S-12 is optimal for high current applications, yet it also provides a very high accuracy and stability at the same time. The regulator can also be used in applications where space constraints are of a major concern while still providing a high level of performance.

All in all, the LM2585S-12 Voltage Regulator has proven to be a reliable, high performance choice for many customer applications and has become a popular choice for many products. With its wide input voltage support, wide output voltage range, and a range of protective features, the LM2585S-12 is an ideal solution for powering a variety of circuit designs.

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