Overview
The TPS61085DGKR is a high-frequency, high-efficiency DC-DC converter produced by Texas Instruments. This device features an integrated 2.0-A, 0.13-Ω power switch, enabling it to provide an output voltage up to 18.5 V. The converter is designed for applications requiring a boost voltage from a lower input voltage range of 2.3 V to 6 V. It operates in a current mode scheme with quasi-constant frequency and is externally compensated for maximum flexibility and stability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 to 6 | V |
| Output Voltage Range | VIN + 0.5 to 18.5 | V |
| Switch Peak Current Limit | 2.0 A (min) | A |
| Switching Frequency | 650 kHz / 1.2 MHz (selectable) | kHz / MHz |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | VSSOP-8, TSSOP-8 | |
| Package Size (VSSOP) | 3.00 mm × 3.00 mm | mm |
| Package Size (TSSOP) | 3.00 mm × 4.40 mm | mm |
Key Features
- High-frequency operation with selectable switching frequency of 650 kHz or 1.2 MHz
- Integrated 2.0-A, 0.13-Ω power switch
- Adjustable soft-start to minimize inrush current at startup
- Thermal shutdown and undervoltage lockout for protection
- External compensation for optimizing application-specific conditions
- 8-pin VSSOP and TSSOP packages
Applications
- Handheld devices
- GPS receivers
- Digital still cameras
- Portable applications
- DSL modems
- PCMCIA cards
- TFT LCD bias supply
Q & A
- What is the input voltage range of the TPS61085DGKR?
The input voltage range is from 2.3 V to 6 V.
- What is the maximum output voltage of the TPS61085DGKR?
The maximum output voltage is up to 18.5 V.
- What are the selectable switching frequencies of the TPS61085DGKR?
The switching frequencies are 650 kHz and 1.2 MHz.
- What is the purpose of the soft-start feature in the TPS61085DGKR?
The soft-start feature minimizes inrush current at startup.
- What types of packages are available for the TPS61085DGKR?
The device is available in 8-pin VSSOP and TSSOP packages.
- What are some common applications for the TPS61085DGKR?
Common applications include handheld devices, GPS receivers, digital still cameras, portable applications, DSL modems, PCMCIA cards, and TFT LCD bias supply.
- How does the external compensation feature work in the TPS61085DGKR?
The external compensation allows optimizing the application for specific conditions by adjusting the compensation components.
- What are the thermal protection features of the TPS61085DGKR?
The device features thermal shutdown and undervoltage lockout for protection.
- What is the operating temperature range of the TPS61085DGKR?
The operating temperature range is from -40°C to 125°C.
- How does the selectable switching frequency impact the design of the TPS61085DGKR?
The selectable switching frequency allows the use of small external inductors and capacitors for higher frequency (1.2 MHz) or higher system efficiency for lower frequency (650 kHz).
