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RT9214ZSP
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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) Exposed Pad
- Supplier Device Package：8-SOP-EP
- Grade：-
- Qualification：-
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Overview
The RT9214ZSP is a high-efficiency synchronous buck PWM controller manufactured by Richtek Technology Corporation. Designed for PC-based systems, it generates logic-supply voltages using a 5V or 12V supply voltage. The device integrates internal soft-start and frequency compensation networks, featuring a 300kHz fixed-frequency oscillator and fast transient response via a high-speed GM amplifier. It supports full 0 to 100% duty ratio operation and includes an over-current fault monitor on the MOSFET without requiring a current sense resistor.
Feature Summary
- Integrates control, output adjustment, monitoring, and protection functions into a single package
- Drives all low-cost N-channel MOSFETs with adaptive non-overlapping gate driver
- Includes internal soft-start and frequency compensation networks
- Provides over-current fault monitoring on the MOSFET
Applications
- PC-based system logic supply generation
- Synchronous buck DC-DC conversion
- Voltage mode PWM control applications
Procurement Notes
Verify the specific suffix ZSP against the official datasheet to confirm pinout and packaging details. Ensure compatibility with external N-channel MOSFETs for the synchronous buck topology. Check RoHS compliance status as indicated in the manufacturer documentation before finalizing procurement specifications.
Selection Notes
Select this component for applications requiring a 5V or 12V input supply for logic power generation. It is suitable where external current sensing resistors are undesirable due to efficiency losses. Consider the 300kHz switching frequency and integrated compensation when designing the external filter components.
Part Context
The RT9214 series consists of high-performance single-output devices designed for generating logic supply voltages in PC systems. The RT9214ZSP variant belongs to this family, offering integrated protection and control features to simplify the design of synchronous buck converters for computer motherboard and peripheral power rails.
Replacement Considerations
RT9210GC, RT9210GS, RT9210PC, RT9210PS are similar synchronous buck controllers from the same manufacturer but may differ in channel count or specific application focus such as DDR memory termination.
