RT8059 Texas Instruments Integrated Circuit (SOT23) In Stock
RT8059 is an adjustable-output 1 A synchronous buck DC-DC converter IC in a compact TSOT23-5 package. Key specs: 1 A output current, adjustable output voltage, high efficiency PWM control for low-power applications. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- RT8059 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1 A output current capacity in a tiny TSOT23-5 package enables efficient power delivery in space-constrained portable designs
- Adjustable output voltage via external resistor divider provides design flexibility for 1.0 V to 3.3 V power rails
- High-efficiency PWM switching topology minimizes power loss and heat generation in battery-powered IoT and wearable devices
Applications
RT8059 is suited for point-of-load DC-DC conversion in portable electronics, IoT devices, and wearables requiring a regulated 1 A output from a higher-voltage input rail. Its adjustable output voltage allows the same device to generate 1.8 V, 2.5 V, or 3.3 V supply rails by changing two external resistors, reducing BOM complexity in multi-rail designs. The TSOT23-5 package fits easily into compact power management circuits on single-board computers and sensor modules.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What output current does RT8059 deliver and at what efficiency level for a typical 5 V to 3.3 V conversion?
RT8059 delivers up to 1 A of continuous output current. In a typical 5 V input to 3.3 V output conversion, synchronous buck topology achieves efficiencies above 90% under moderate loads of 500 mA, significantly reducing power dissipation compared to linear regulators. This makes it suitable for powering microcontrollers, wireless modules, and sensors in battery-operated devices where thermal management and battery life are critical.
How is the output voltage of RT8059 set, and what output voltage range does it support?
RT8059's output voltage is set using an external resistor divider connected to the feedback pin. By selecting appropriate resistor values, the output can be adjusted from approximately 0.8 V up to the input voltage minus the dropout, typically covering the 1.0 V to 3.3 V range used by modern microcontrollers and digital ICs. A standard 100 kΩ top resistor combined with a calculated bottom resistor sets the output with less than 2% accuracy across temperature.
How does the RT8059 TSOT23-5 package size benefit designs compared to larger SOT-23 or SO-8 regulator packages?
The TSOT23-5 package used by RT8059 measures approximately 1.6 mm × 1.6 mm, significantly smaller than a standard SOT-23 (2.9 mm × 1.6 mm) and much smaller than an SO-8 package (5 mm × 4 mm). This size reduction allows engineers to place the 1 A buck regulator within 5 mm of the load IC, reducing parasitic inductance on the input rail and improving transient response in battery-powered modules with tight PCB real estate constraints.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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