
SY8370C1TMC / SY21249C1TMC DTR Silergy 11A Step-Down Regulator QFN-13
Product Code: SY8370C1TMC - SY21249C1TMC
Part Marking: DTR*** (e.g., DTR5QA, DTRxxx - Last characters vary by production lot)
Brand: Silergy
Package Code: QFN-13 3x4 mm
Datasheet: SY21249C1TMC
Product Specifications
This integrated circuit, carrying the DTR*** top mark, represents Silergy's SY8370C1TMC and SY21249C1TMC (cross-references), which are synchronous Step-Down DC-DC regulators designed for hardware requiring high power delivery. Housed in a compact QFN-13 package, this IC offers a 600kHz switching frequency and an advanced COT (Constant On-Time) architecture for a very fast transient response. It operates over a wide input voltage range of 5.5V to 24V, providing a high output current of up to 11A, and features an internal 5V LDO with a 100mA capacity. It plays a critical role in repairing regulator failures in modern motherboards.
- Type: Synchronous Step-Down DC-DC Regulator
- Input Voltage (Vin): 5.5V - 24V
- Maximum Output Current: 11A
- Control Architecture: 600kHz Frequency, COT (Constant On-Time)
- Internal LDO: 5V (100mA Capacity)
- Package: QFN-13 3x4mm
- Applications: Laptop motherboards (System power supply), high-current DC-DC voltage regulation circuits
Sales Information
Condition: NEW. Original.
Warranty: No warranty is provided for semiconductor products.
Shipping (Turkey): All orders placed before 16:00 on weekdays and 14:30 on Saturdays are shipped the same day via contracted courier. (Excluding busy shipping periods and extraordinary circumstances)
International Shipping: Orders placed before 16:00 on weekdays are shipped the same business day via Air Parcel. Orders placed on weekends and outside working hours are shipped on the following first business day. (Excluding busy periods) Country of dispatch is Turkey.













