UC2845BDR2G Integrated Circuits (ICs)

Frequency - Switching:	500kHz
Base Part Number:	UC284*B
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-25°C ~ 85°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:	Tape & Reel (TR)

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The UC2845BDR2G is a high-performance and low-power, monolithic, bipolar, pulse-width-modulation (PWM) or pulse-frequency-modulation (PFM) switching controller. The device provides a wide range of options, enabling cost-effective, low-noise solutions for industrial, medical, and other market applications. Furthermore, the device also provides system designers with dynamic, nonlinear control of output voltage, enabling the use of different types of transistors including bipolar transistors and diodes. In addition, the device allows for flexibility in the design approach and helps improve efficiency when used in a variety of topologies such as low-power, resonant converter and step-down use cases.

As a PMIC (Power Management IC) device, the UC2845BDR2G provides switch-mode regulator topologies such as buck (step-down), boost (step-up), and buck-boost (step) control. This type of low-noise, low-power voltage regulator is used for applications including communication systems, computing systems, consumer electronics, portable power and automotive applications. Furthermore, the UC2845BDR2G is a DC-DC switching controller, meaning it can be used to efficiently regulate a wide range of input and output voltages, allowing a designer to implement efficient, low-noise systems with minimal component count and power consumption.

At the heart of the UC2845BDR2G is the Pulse-Width Modulation (PWM) Output Block, which controls the duty cycle of the output switch. The PWM Output Block is adjustable in order to obtain optimized performance, thus it can be configured to either use the PWM mode or the PFM mode, depending on the application requirements and the desired output-voltage accuracy. The PWM block is also designed for flexibility, allowing for synchronized/unsynchronized transitions of the output voltage as well as adjustable switching frequency and synchronization edges.

The UC2845BDR2G also features Other Intelligent Power Management (OPM) functions such as fault protection, soft-start and current limit for the output switch. OPM functions act as safety mechanisms to protect the system from potentially damaging conditions, such as overvoltage, undervoltage, and overtemperature. Thanks to these fault protection functions, the occurrence of short circuits, component overheating, and other potentially dangerous situations can be drastically reduced.

The UC2845BDR2G provides a wide range of features and functions, making it a great choice for designers looking to make a low-power, low-noise, and fully optimized system. The device comes in a 28-pin LLP (3 mm x 7 mm) package, which minimizes the required circuit board area and presents an advanced, cost-effective solution to the designer.

In summary, the UC2845BDR2G is an advanced, cost-effective single-switch PWM/PFM controller IC specifically designed for applications including communication systems, computing systems, consumer electronics, portable power, and automotive applications. It is an excellent choice for DC-DC voltage regulation, and can provide system designers with dynamic, non-linear output voltage control, as well as intelligent fault protection, soft start, and current limit functions to ensure safe and reliable operation. With its range of features, the UC2845BDR2G provides great flexibility and low-power efficiency in a wide range of applications.

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