ST1S12G18R

Name: ST1S12G18R
Brand: STMicroelectronics NV
Rating: 4.5 (10 reviews)
Author: Lisleapex

Switching Voltage Regulators STEP-DOWN SWITCH REG W/ENABLE 1.7MHZ

7,060 Effective Inventory

ST1S12G18R

Effective Inventory7,060

Switching Voltage Regulators STEP-DOWN SWITCH REG W/ENABLE 1.7MHZ

Manufacturer Part # : ST1S12G18R
Package/Case: SOT23-5
Brand: STMicroelectronics NV
Product Categories : Voltage Regulators , DC DC Switching Regulators
Series : ST1S12

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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

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About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

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About packaging

Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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ST1S12G18R DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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ST1S12G18R Details

The ST1S12G18R is a synchronous step-down converter from STMicroelectronics, designed for efficient voltage regulation in various power supply applications. This converter operates at high frequencies, offering a compact solution for achieving low output voltages with high efficiency. It is suitable for use in battery-powered devices, IoT applications, and portable electronics.

Pinout

1 (VIN): Input Voltage
2 (GND): Ground
3 (SW): Switch Node
4 (FB): Feedback
5 (EN): Enable
6 (VOUT): Output Voltage

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

High Efficiency: Achieves high efficiency conversion for optimized power usage.
Wide Input Voltage Range: Supports a wide input voltage range for versatile applications.
Low Output Voltage: Provides stable low output voltages for powering sensitive components.
Overcurrent Protection: Includes overcurrent protection mechanisms for enhanced safety.
Compact Design: Compact form factor for space-constrained applications.

Application

Battery-Powered Devices: Ideal for powering devices operating on battery sources.
IoT Applications: Suitable for IoT devices requiring efficient power management.
Portable Electronics: Used in portable gadgets for voltage regulation and power optimization.

Where to Use

The ST1S12G18R is recommended for applications that demand efficient voltage regulation, especially in battery-powered, IoT, and portable electronic devices. It offers stable and reliable power conversion for various consumer electronics and industrial applications.

How to Use

To utilize the ST1S12G18R, connect the input voltage (VIN) and ground (GND) pins to the power supply source. Ensure proper routing of the switch node (SW), feedback (FB), enable (EN), and output voltage (VOUT) pins for accurate regulation and control. Refer to the datasheet for comprehensive usage instructions.

Application Circuit

The application circuit diagram for the ST1S12G18R demonstrates the connectivity required for integrating the step-down converter into a power supply system. It showcases the connections for input, output, feedback, and enable functions to achieve efficient voltage regulation.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

L7987: A comparable synchronous step-down converter offering similar performance characteristics.
LM2678: An alternative step-down converter with equivalent efficiency and voltage regulation features.

Complementary

The ST1S12G18R can be paired with the ST1S03 series LDO regulators to provide additional voltage regulation and filtering capabilities for sensitive electronic components.

When selecting complementary components, ensure compatibility and proper functionality alignment for optimal system performance.

Frequently Asked Questions

Q: What is the efficiency rating of the ST1S12G18R?

A: The ST1S12G18R offers high efficiency conversion, typically above 90% under nominal operating conditions. Refer to the datasheet for detailed efficiency curves and performance data.

Q: Is the ST1S12G18R suitable for low-power applications?

A: Yes, the ST1S12G18R is suitable for low-power applications where efficient voltage regulation is essential. It is designed to handle low output voltages with high precision.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Input Voltage Min Volt	2.5	Input Voltage Max Volt	5.5
Operating Temp Min Celsius	-40.0	Operating Temp Max Celsius	125.0
ECCN US	EAR99	ECCN EU	NEC
Packing Type	Tape And Reel	RoHs compliant	Ecopack2
Grade	Industrial	Package Name	TSOT23-5L

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification ST1S12G18R PDF Download

FAQs

What is ST1S12G18R?

The ST1S12G18R is a synchronous step-down DC-DC converter designed by STMicroelectronics. It is ideal for applications requiring efficient voltage regulation, such as battery-powered devices, consumer electronics, and industrial automation.

How Does ST1S12G18R Work?

The ST1S12G18R works by converting a higher input voltage to a lower regulated output voltage with high efficiency. It utilizes a synchronous rectification architecture to minimize power dissipation and improve overall efficiency. The converter features a fixed frequency PWM control and provides a stable output voltage even with variations in input voltage and load conditions.

How Many Pins does ST1S12G18R have and What are the Functions of the Pinout Configuration?

The ST1S12G18R is housed in a 3 x 3 mm DFN10 (Dual Flat No-Lead) package. The pinout configuration includes:

VIN: Power input pin.
PGND: Power ground pin.
SW: Switching node for the internal power MOSFET.
FB: Feedback input pin for setting the output voltage.
EN: Enable pin for turning the converter on and off.
PWRGD: Power good output pin indicating the output voltage is within regulation.
NC: No connect pin.

What are the Pros and Cons of ST1S12G18R?

Pros:

High Efficiency: Provides efficient voltage conversion, reducing power dissipation and extending battery life.
Compact Package: The DFN10 package is space-efficient, suitable for compact designs.
Wide Input Voltage Range: Supports a wide input voltage range for versatility in various applications.
Low Output Voltage: Suitable for low-voltage microcontroller and processor applications.

Cons:

External Components: May require external components such as inductors and capacitors for optimal operation.
Complexity: Requires careful consideration of layout and thermal management for high-power designs.

Are There Any Equivalents/Alternatives to ST1S12G18R for Recommendation?

The TPS62130 from Texas Instruments is an equivalent step-down converter with similar features.
Alternatives to the ST1S12G18R include the MP2315 from Monolithic Power Systems and the ADP2384 from Analog Devices.