Richtek USA Inc.16-WFQFN Exposed PadRoHS
RT2855ALGQW
IC REG BUCK ADJUSTABLE 4A 16WQFN
Category
Subcategory
Pmic Voltage Regulators Dc Dc Switching Regulators
Package
16-WFQFN Exposed Pad
Series
ACOT™
Status
Discontinued at Digi-Key
$2.78 / unit (market reference)
MOQ: 1 pcs
Submit your quantity via the inquiry form for a competitive quote within 24 hours.
Parameters
| Parameter | Value |
|---|---|
| Brand | Richtek USA Inc. |
| Model | RT2855ALGQW |
| Package / Case | 16-WFQFN Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Topology | Buck |
| Voltage - Input (Min) | 4.5V |
| Voltage - Input (Max) | 18V |
| Voltage - Output | 0.765V |
| Current - Output | 4A |
| Frequency - Switching | 650kHz |
| Number of Outputs | 1 |
| Supplier Device Package | 16-WQFN (3x3) |
| RoHS | RoHS |
| Part Status | Discontinued at Digi-Key |
Application & Notes
RT2855ALGQW by Richtek USA Inc. is a Buck IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to 18V, output 0.765V. The 16-WFQFN Exposed Pad package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
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All Technical Specifications
| Function | Step-Down |
| Topology | Buck |
| Output Type | Adjustable |
| Current - Output | 4A |
| Number of Outputs | 1 |
| Output Configuration | Positive |
| Frequency - Switching | 650kHz |
| Synchronous Rectifier | Yes |
| Voltage - Input (Max) | 18V |
| Voltage - Input (Min) | 4.5V |
| Voltage - Output (Max) | 7V |
| Voltage - Output (Min/Fixed) | 0.765V |
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