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RT9214APS
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Product Detailed Parameters
- Description：IC REGULATOR CONTROLLER
- Series：-
- Mfr：Richtek USA Inc.
- Package：Bulk
- Output Type：Transistor Driver
- Function：Step-Down
- Output Configuration：Positive
- Topology：Buck
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：5V, 12V
- Frequency - Switching：300kHz
- Duty Cycle (Max)：100%
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：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 RT9214APS is a high-efficiency synchronous buck PWM DC/DC controller designed to generate logic-supply voltages in PC-based systems. It operates with 5V or 12V supply voltage and drives low-cost N-channel MOSFETs using voltage mode PWM control. The device features a fixed 300kHz oscillator, internal soft-start, and adaptive non-overlapping gate driver. Over-current protection monitors the lower MOSFET's RDS(ON) without requiring a sense resistor.
Feature Summary
- Integrates all control, output adjustment, monitoring, and protection functions into a single package
- Provides fast transient response via high-speed GM amplifier and full 0 to 100% duty ratio capability
- Supports over-current fault monitoring on the MOSFET without external current sense resistors
Applications
- Graphic Cards
- Motherboards and Desktop Servers
- IA Equipment
- Telecommunication Equipment
- High Power DC/DC Regulators
Procurement Notes
Verify the specific suffix APS against official Richtek documentation to confirm pinout compatibility and thermal pad requirements for the SOP-8 (Exposed Pad) package. Confirm RoHS compliance status and lead-free soldering suitability prior to integration. Ensure design supports the required 5V or 12V input range and 300kHz switching frequency constraints.
Selection Notes
Select this component for applications requiring a single-output synchronous buck solution with integrated protection. The absence of an external current sense resistor reduces bill of materials cost. The fixed 300kHz frequency offers a balance between efficiency and external component size. Verify that the target system utilizes low-cost N-channel MOSFETs compatible with the internal gate driver.
Part Context
The RT9214 series belongs to Richtek’s portfolio of high-performance power management ICs for computing platforms. It serves as a core controller for generating stable logic supplies in complex digital systems. The device consolidates frequency compensation and soft-start circuits, simplifying the design process for motherboard and server power stages.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official cross-reference lists from Richtek Technology Corporation for verified alternatives.
