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RT8108BGS
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK PWM SOP-8
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：4.75V ~ 13.2V
- Frequency - Switching：300kHz
- Duty Cycle (Max)：92%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Phase Control
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOP
- Grade：-
- Qualification：-
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Overview
The RT8108BGS is a single-phase synchronous buck PWM DC/DC controller manufactured by Richtek USA Inc. It is designed to drive two N-MOSFETs for high-current applications. The device utilizes voltage mode PWM control with an external feedback loop compensation for fast transient response. It features a fixed operating frequency of 300kHz, which helps reduce the size of external inductors and capacitors. The IC supports a single supply voltage range of 5V to 12V and offers a duty cycle from 0% to 90%. Integrated protection functions include over-current protection (OCP), over-voltage protection (OVP), over-temperature protection (OTP), and under-voltage lockout (UVL).
Feature Summary
- Integrates complete protection functions including OCP, OVP, OTP, and UVL within a compact surface mount package.
- Provides high driving capability suitable for large output current applications using two N-MOSFETs.
- Utilizes voltage mode PWM control with an external feedback loop for fast transient response.
Applications
- Motherboards and desktop servers
- Graphic cards
- Switching power supplies
- Generic DC/DC power regulators
Procurement Notes
Verify the specific suffix 'BGS' against official datasheets to confirm pinout and thermal pad configuration. Ensure compatibility with the required switching frequency and input voltage range. Check RoHS compliance status and moisture sensitivity level before integration into production assemblies.
Selection Notes
Select this component for designs requiring a single-phase synchronous buck topology with integrated protections. Consider the 300kHz fixed frequency for balancing component size and efficiency. Evaluate the need for external MOSFETs and the associated gate drive requirements based on the target output current.
Part Context
The RT8108 series belongs to Richtek's portfolio of single-phase synchronous buck PWM controllers. These devices are engineered for general-purpose DC/DC conversion where space savings and reliability are critical. The series typically includes variants with different fixed frequencies to optimize external component selection for various power levels.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference data through official manufacturer channels or authorized distributors before considering alternative components.
