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Product Detailed Parameters
- Description：STEP-UP & STEP-DOWN 300KHZ DCDC
- Series：XC9302
- Mfr：Torex Semiconductor Ltd
- Package：Tape & Reel (TR)
- Output Type：PWM
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Buck-Boost
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：2V ~ 10V
- Frequency - Switching：300kHz
- Duty Cycle (Max)：92%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Enable
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-25-5
- Grade：-
- Qualification：-
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Overview
The XC9302A523MR-G is a step-up and step-down DC-DC controller manufactured by Torex Semiconductor. It operates at a switching frequency of 300kHz, enabling compact passive component selection. The device supports buck-boost topology for positive output voltage regulation. It is housed in an SOT-25-5 package and supplied in reel packaging with a factory quantity of 3000 units.
Feature Summary
- Supports step-up and step-down voltage conversion topologies
- Integrates a 300kHz switching frequency controller
- Provides positive output voltage regulation
Applications
- Battery-powered portable electronics
- Single-cell lithium-ion battery systems
- Applications requiring input voltage variations above and below output levels
Procurement Notes
Verify the specific suffix '523' against the official Torex datasheet to confirm the exact output voltage setting or resistor configuration. Ensure the SOT-25-5 package footprint matches the target PCB design. Confirm that the 300kHz operating frequency aligns with electromagnetic interference requirements for the intended application environment.
Selection Notes
Select this component when input voltages may fluctuate around the desired output level, necessitating both boost and buck capabilities. The 300kHz frequency offers a balance between efficiency and external component size compared to lower-frequency alternatives. Ensure the selected variant matches the required fixed output voltage specification defined by the internal feedback network.
Part Context
This part belongs to the XC9302 series of DC-DC controllers from Torex Semiconductor. The series includes variants with different switching frequencies, such as 180kHz models like the XC9302A552MR-G. The XC9302A523MR-G specifically utilizes the higher 300kHz frequency option within this family.
Replacement Considerations
Direct substitutes include other XC9302 series parts with compatible pinouts, such as XC9302A543MR-G, which also operates at 300kHz but may differ in output voltage settings. Verify electrical compatibility before substitution.
