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R7521GN
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Product Detailed Parameters
- Description：IC REGULATOR DIP
- Series：-
- Mfr：Richtek USA Inc.
- Package：Tube
- Output Type：PWM
- Function：-
- Output Configuration：Positive
- Topology：Half-Bridge, Push-Pull
- Number of Outputs：4
- Output Phases：-
- Voltage - Supply (Vcc/Vdd)：4V ~ 6V
- Frequency - Switching：60kHz
- Duty Cycle (Max)：46%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable, Power Good
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-DIP
- Grade：-
- Qualification：-
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Overview
The R7521GN is a DC-DC switching controller manufactured by Richtek USA Inc., designed for half-bridge and push-pull topologies. It operates within a supply voltage range of 4V to 6V and provides four outputs. The device features a fixed switching frequency of 60kHz with a maximum duty cycle of 46%. It does not support clock synchronization. The component is housed in a 16-DIP package with a width of 0.300 inches (7.62mm). This product is currently obsolete and no longer manufactured.
Feature Summary
- Supports half-bridge and push-pull converter topologies
- Provides four output channels
- Operates at a fixed 60kHz switching frequency
- Housed in a standard 16-pin DIP package
Applications
Procurement Notes
Verify the obsolete status before procurement, as the R7521GN is no longer manufactured by Richtek USA Inc. Confirm availability through secondary market distributors if required. Ensure compatibility with existing 16-DIP footprints. Check for potential tariff implications when shipping to the United States. Non-cancelable and non-returnable terms may apply depending on the supplier.
Selection Notes
Select this component only if legacy support for a 16-DIP half-bridge or push-pull controller is strictly required. Consider that the fixed 60kHz frequency and 4V–6V input range limit flexibility. Evaluate alternative modern controllers from the manufacturer or competitors for improved efficiency and availability. Verify that the four-output configuration meets specific design needs without requiring additional external circuitry.
Part Context
Richtek USA Inc. specializes in power management integrated circuits, including PMICs for consumer electronics, telecommunications, and industrial automation. The R7521GN belongs to their historical portfolio of DC-DC switching controllers. While the company continues to innovate with high-efficiency converters and LED drivers, this specific part represents an older generation of technology now marked as obsolete.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements must be identified through independent engineering analysis or distributor cross-reference tools. No official replacement part numbers are listed in the source material.
