LTC1159IS#TRPBF

Frequency - Switching:	Up to 250kHz
Base Part Number:	LTC1159
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 85°C (TA)
Control Features:	Current Limit, Enable
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	Yes
Duty Cycle (Max):	100%
Series:	--
Voltage - Supply (Vcc/Vdd):	4 V ~ 40 V
Output Phases:	1
Number of Outputs:	1
Topology:	Buck
Output Configuration:	Positive or Negative
Function:	Step-Down
Output Type:	Transistor Driver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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LTC1159IS#TRPBF Application Field and Working Principle

The LTC1159IS#TRPBF is a low voltage DC-DC switching controller from the PMIC-Voltage Regulators-DC DC Switching Controllers series. It is designed for portable electronic applications and other applications where power density and efficiency are of importance.The working of the controller is based on the concept of pulsewidth modulation (PWM). It has an on-board voltage reference and is capable of controlling the input voltage and output voltage of the DC-DC switching regulator circuit, allowing the user to adjust the power requirement and efficiency of the system. With a built-in fault protection circuitry, it will shut down the system if it detects any current or voltage anomalies.The controller applies a synchronous rectifier to reduce power dissipation. Its high efficiency and low voltage operation also make it an ideal choice for portable products that rely on long-term battery power.The LTC1159IS includes an integrated high-side lateral N-Channel MOSFET with a built-in N-Channel driver. This feature further enhances the efficiency and power handling capability of the controller.One of the most common applications of the LTC1159IS is in the field of mobile phones. It is used to provide the synchronization and precise control of the switching regulator circuits in use. It can also be used in wireless notebooks, tablets and other mobile devices with its high efficiency and low voltage operation.In addition, the LTC1159IS can also be used to control and synchronize switching regulators used in LED lighting applications, in order to ensure the efficient utilization of LED arrays. Moreover, the built-in fault protection circuitry makes this controller specially suitable for battery backed systems and other critical applications.In technical terms, the LTC1159IS utilizes a constant frequency, fixed off-time control technique to guarantee an extremely precise and rapid response to changes in input and output voltage.At its heart, theLTC1159IS is composed of several analog and digital components like the amplifiers,summing amplifiers, voltage references, comparators, PWM comparator, and the driver.The main goal of the controller is to accurately measure theoutgoing voltage and to adjust the duty cycle of the MOSFET switch accordingly. This ensures that the optimal voltage is delivered to the load, and prevents any current/voltage related system failures.The LTC1159IS also possesses various protective features, such as the over-current protection, thermal shutdown and under-voltage lockout. This further enhances the safety and reliability of the system.Finally, the LTC1159IS is manufactured according to the strictest quality specifications and is capable of operating across a wide temperature range, making it an ideal choice for both commercial and industrial applications.Overall, the LTC1159IS is a versatile and highly efficient DC-DC switching controller. Its various features and fault protection circuitry make it a suitable choice for critical applications and for any system relying on long-term battery power.

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