LT3991IDD#PBF

Voltage - Output (Min/Fixed):	1.19V
Base Part Number:	LT3991
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	200kHz ~ 2MHz
Current - Output:	1.2A
Voltage - Output (Max):	30V
Series:	--
Voltage - Input (Max):	55V
Voltage - Input (Min):	4.3V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

LT3991IDD#PBF Application Field and Working Principle

LT3991IDD#PBF is an ideal solution for miniature applications in the field of DC-DC switching regulators. The device guarantees excellent performance and unparalleled design flexibility, enabling designers to easily and quickly implement highly efficient DC-DC applications. This device is suitable for a variety of applications, including portable device power management, voltage regulation, and LED lighting. This product is from Linear Technology Corporation and is a current-mode step-up converter designed for high efficiency. It operates from a single supply of 2.7 volts to 6.5 volts and provides a fixed output voltage (3.3 volts) at up to 1.8A output current. The device features a programmable receiving boost frequency and uses current-mode for excellent line and load regulation. This device operates with a high level of efficiency, and in the state of light load, the device can automatically switch to lower power modes. The device also provides power saving and over-voltage protection (OVP). The output voltage can be adjusted by an external resistor.The LT3991IDD#PBF consists of two main parts: the power stage and the control stage. The power stage contains two power MOSFET transistors, one MOSFET connected to the input and the other MOSFET to the output. At the same time, a ramp generator and high voltage comparator are used to generate an output pulse that controls the turn-on time of the two MOSFETs. The output of the control stage is connected to the gate of the two MOSFETs, and its frequency is controlled by the external oscillator feedback circuit.The LT3991IDD#PBF power management device is suitable for various device applications that require a low output ripple and a wide input voltage range. It is easy to use and provides a high level of performance with excellent efficiency, high speed response time, and an adjustable boost frequency. With its small size and light weight, this device is the perfect choice for portable applications.

The specific data is subject to PDF, and the above content is for reference

Part Number	Manufacturer	Price	Quantity	Description