Part Number: ST8R00WPUR

Manufacturer: STMicroelectronics


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of ST8R00WPUR

Datasheet  ST8R00WPUR datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – DC DC Switching Regulators
Manufacturer STMicroelectronics
Packaging Tape & Reel (TR)
Part Status Active
Function Step-Up
Output Configuration Positive
Topology Boost
Output Type Adjustable
Number of Outputs 1
Voltage – Input (Min) 4V
Voltage – Input (Max) 6V
Voltage – Output (Min/Fixed) 6V
Voltage – Output (Max) 12V
Current – Output 3A (Switch)
Frequency – Switching 1.2MHz
Synchronous Rectifier Yes
Operating Temperature -25°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 8-VDFN Exposed Pad
Supplier Device Package 8-DFN (4×4)

ST8R00WPUR Introduction

Step-up DC-DC converters are an important part of power electronics because they make it easy to go from a lower input voltage to a greater output voltage. Many portable gadgets, Internet of Things (IoT) systems, and equipment that runs on batteries use these converters. The ST8R00WPUR is a synchronous PWM step-up DC-DC converter that stands out in this group.

The ST8R00WPUR is made to give a controlled output voltage between 6 and 12 V when it gets an input voltage between 4 and 6 V. This converter’s high switching frequency of 1.7 MHz makes it possible to use small surface-mount components, which makes the best use of room on PCBs. It comes in a small DFN8 package (4 x 4 mm), which makes it perfect for applications with limited room.

With its current mode PWM topology and low ESR SMD ceramic capacitors, the ST8R00WPUR makes sure that the output ripple is low, giving sensitive electronic devices clean, stable power. Also, its simple design means that it doesn’t need many external parts. An inductor, two capacitors, and a resistor divider are all that are needed to set the output voltage.

Overview of ST8R00WPUR

A synchronous PWM step-up DC-DC converter called the ST8R00WPUR is created to effectively raise the output voltage from a lower input voltage. Here is a summary of its features, essential characteristics, and benefits:

Operation and functionality

To control the output voltage, the ST8R00WPUR uses synchronous PWM (Pulse Width Modulation) control. It has a 1.7 MHz switching frequency, which makes it possible to use tiny surface-mount components. Low output ripple and accurate voltage regulation are ensured by the converter’s current-mode PWM operation.

The ST8R00WPUR can accept input voltages between 4 and 6 V for both its input and output voltage ranges. It effectively increases this voltage in order to deliver a controlled output voltage between 6 and 12 V. Due to its adaptability, it can be used in a variety of applications that call for a higher voltage.

Switching Frequency and Required Components

The ST8R00WPUR supports small surface-mount components thanks to its high switching frequency of 1.7 MHz, enabling compact and space-saving designs. The converter only needs a few external parts, usually an inductor, two capacitors, and a resistor divider, to control the output voltage. This simplicity decreases the number of components and streamlines the design process.

Applications and Benefits

Using the ST8R00WPUR as a step-up DC-DC converter has a number of benefits. Its great efficiency and low output ripple, for starters, guarantee a steady and dependable power supply to delicate electronic components. The converter is excellent for applications where space is at a premium due to its tiny package size and high switching frequency. The ST8R00WPUR’s straightforward design and lack of need for external components also help to simplify the manufacturing process and reduce costs.

This particular DC-DC converter is used in a variety of industries, including battery-powered equipment, Internet of Things (IoT) systems, portable gadgets, and other applications that call for effective step-up voltage conversion. It is a popular option for powering a variety of electronic gadgets due to its adaptability, compactness, and dependable performance.

Internal Architecture and Key Components

The ST8R00WPUR’s internal architecture is made up of a number of parts that cooperate to produce effective voltage conversion. The synchronous PWM controller, power MOSFETs, inductor, and capacitors are important parts.

● Current Mode PWM Topology and Synchronous PWM

The ST8R00WPUR uses synchronous PWM control to achieve excellent output efficiency and little output ripple. It reduces power losses during switching transitions by utilizing both a high-side and a low-side power MOSFET. By measuring the inductor current and regulating the duty cycle correspondingly to ensure steady output voltage, the current-mode PWM topology enables accurate regulation.

● Capacitors and inductors

In the ST8R00WPUR, the inductor is crucial for storing and transferring energy. The inductor stores energy from the input voltage during the switch-on time. Energy is transported from the input to the output during the switch-off time. A suitable inductor value must be chosen in order to convert voltage with the desired efficiency.

Different functions are carried out by the converter’s capacitors. A stable supply is made possible by the input capacitor’s assistance in reducing input voltage ripple. The output capacitors are in charge of filtering the voltage output and lowering ripple. SMD ceramic capacitors with low equivalent series resistance (ESR) are frequently used to reduce losses and boost effectiveness.

Design Considerations and Practical Applications

The following factors must be taken into account when designing for the ST8R00WPUR:

Setting the output voltage of the ST8R00WPUR requires a resistor divider network. The desired output voltage within the range of 6 to 12 V can be set by selecting the proper resistor values. To guarantee precise voltage regulation, consideration should be given to resistor tolerance and temperature coefficients.

Low Power Consumption and High Switching Frequency

The ST8R00WPUR’s small DFN8 (4 x 4 mm) packaging enables designs that take up less room. The high switching frequency of 1.7 MHz, which reduces the overall size of the circuit and makes PCB layout optimization possible, enables the use of tiny surface-mount components.

ST8R00WPUR Applications

The ST8R00WPUR is a good fit for a wide range of applications, including battery-powered systems, IoT systems, and portable devices. It is the perfect option for supplying power to electronics in these fields due to its efficiency, minimal output ripple, and small size. Other potential uses include energy harvesting systems, wearables, wireless sensors, and handheld devices.

Designers can construct effective and compact power solutions suited to their particular application needs by taking into account the design requirements and utilizing the benefits of the ST8R00WPUR.


The ST8R00WPUR synchronous PWM step-up DC-DC converter is an efficient and compact solution for power electronics. With precise voltage regulation and low output ripple, it is well-suited for portable devices, IoT systems, and battery-powered equipment. You can obtain this product from ICRFQ, a leading electronic component distributor in China. Explore the possibilities of the ST8R00WPUR and unlock efficient and compact power solutions for your electronic applications today.

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