UC3845BVD1G

Frequency - Switching:	500kHz
Base Part Number:	UC384*B
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 105°C (TA)
Control Features:	Frequency Control
Serial Interfaces:	--
Clock Sync:	No
Synchronous Rectifier:	No
Duty Cycle (Max):	48%
Series:	--
Voltage - Supply (Vcc/Vdd):	7.6 V ~ 30 V
Output Phases:	1
Number of Outputs:	1
Topology:	Boost, Flyback
Output Configuration:	Positive or Negative, Isolation Capable
Function:	Step-Up, Step-Up/Step-Down
Output Type:	Transistor Driver
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

UC3845BVD1G

UC3845BVD1G, which is a type of DC-DC switching controllers, is a PWM controller Integrated Circuit (IC) developed by STMicroelectronics. It is an updated version of UC3845 and UC3842. This device can be used in a variety of applications, such as off-line SMPS, lighting, solar controllers, battery chargers, and various industrial applications.

Application Field

UC3845BVD1G is a versatile device that can support a wide range of power supplies. It can be used to control the phase angles of the input and output voltages, allowing for varying switching frequencies on the power stages. This feature helps to reduce the input current noise, reduce the effects of input voltage surges, and improve the efficiency of the power supply. The wide input/output voltage range and low power consumption also makes it ideal for providing power to low-power devices. UC3845BVD1G can also be used for lighting applications. By controlling the duty cycle, the light output can be adjusted for dimming and brightness control for lamps, LEDs, and other light sources. It is also commonly used in solar controllers, which use the device to regulate the solar panel voltage and current. This feature helps the solar panels to operate as efficiently as possible by providing the correct power levels when needed.UC3845BVD1G can also be used in battery chargers. By controlling the charge time and voltage level, it can effectively monitor the charging process and ensure that the battery is able to accept the right amount of power at each stage. This helps to ensure that the battery is able to charge correctly and remain in good condition.

Working Principle

UC3845BVD1G is an analog comparative device that performs Pulse Width Modulation (PWM) control to regulate the output voltage from an input voltage. It is also used as an automatic voltage regulator that controls the output voltage/current as needed.The working principle of UC3845BVD1G is based on a low-power control circuit, which reads the input voltage and then passes through the highest priority comparator. The comparator then compares the highest priority signal against the reference level, if the input is within range, the comparator will output a PWM signal. This PWM signal will then control the Duty Cycle of the associated power stage, allowing for precise control of the output voltage. The UC3845BVD1G can also be programmed to provide Over Voltage Protection (OVP) if the output voltage exceeds a certain level. This helps to ensure that the circuit is not damaged by excessive voltages. The device also provides short circuit protection, where the output is reduced to zero if too many current is drawn.Overall, UC3845BVD1G is a versatile, easy to use device that is suitable for a wide range of applications. By precisely controlling the voltage levels, the device can help ensure that the associated power supply operates efficiently, safely and for lengthy periods of time.

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

Part Number	Manufacturer	Price	Quantity	Description