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RT8209AGQW
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Product Detailed Parameters
- Description：IC REG CTRLR BUCK 16WQFN
- 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)：4.5V ~ 5.5V
- Frequency - Switching：-
- Duty Cycle (Max)：-
- Synchronous Rectifier：Yes
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, On Time Control, Phase Control, Power Good
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-WFQFN Exposed Pad
- Supplier Device Package：16-WQFN (3x3)
- Grade：-
- Qualification：-
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Overview
The RT8209AGQW is a positive output step-down DC-DC switching controller IC from Richtek USA Inc. It operates within an input voltage range of 4.5V to 5.5V and provides a single regulated output, typically configured for 3.3V applications. The device supports a switching frequency of 200kHz and functions reliably across an operating temperature range of -40°C to 85°C. Designed for synchronous buck converter topologies, it integrates control features including current limit, enable, on-time control, phase control, and power good signaling.
Feature Summary
- Ultra-high efficiency operation with resistor programmable current limit utilizing low-side RDS(ON) sense for lossless limiting
- Quick load step response capability achieving transitions within 100ns
- Integrated control features including current limit, enable, on-time control, phase control, and power good indication
Applications
- Synchronous buck converter designs requiring high efficiency
- Portable electronic devices demanding stable voltage regulation under dynamic loads
- Systems requiring fast transient response to load changes
Procurement Notes
Verify the specific suffix (AGQW) against the manufacturer's latest datasheet to confirm pinout and package dimensions. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Check for obsolescence notices or product change notifications as availability may vary. Ensure the selected variant matches the required thermal performance and electrical specifications for the target application environment.
Selection Notes
Select this component when designing synchronous buck converters that require precise current limiting via low-side sensing. It is suitable for applications needing rapid transient response and high efficiency within a narrow input voltage window. Consider the 32-WQFN package constraints and thermal dissipation requirements. Verify compatibility with external MOSFETs and passive components for the desired 200kHz switching frequency.
Part Context
The RT8209 series belongs to Richtek's portfolio of power management integrated circuits focused on efficient energy conversion. These controllers are engineered for modern electronics requiring compact solutions with high performance. The AGQW designation specifies the particular package and tape-and-reel configuration for surface mount assembly.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer for direct replacements or evaluate alternative synchronous buck controllers with compatible input ranges and package footprints.
