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TPS82085SILR
Texas Instruments - 3A Continuous, DCS-Control, 17uA IQ, 2.4MHz, 8-uSiP 2.8x3.0mm, -40 to +125C
MFR Part #: TPS82085SILRSuperb SKU: SUP-TPS82085SILR
In Stock - Ready to Ship
The TPS82085SILR is a 3A step-down DC-DC converter MicroSiP module from Texas Instruments, integrating the buck converter IC and power inductor into a single 2.8x3.0mm package. Optimized for 2.5V to 6V input (single Li-Ion, USB 5V, 3.3V rails), it delivers up to 3A with 95% peak efficiency at 2.4MHz switching frequency. The DCS-Control topology provides fast transient response with seamless PWM-to-Power-Save transition, and the 17uA quiescent current extends battery life in always-on applications. With -40C to +125C operation and an ultra-compact footprint requiring only 4-5 external passives, it is the ideal power solution for IoT wearables, portable medical devices, and space-constrained battery-powered embedded systems.
Product Specifications
TPS82085SILR - TI MicroSiP Buck Module, 3A, 2.5V-6V Input, Integrated Inductor
Texas Instruments - 3A Continuous, DCS-Control, 17uA IQ, 2.4MHz, 8-uSiP 2.8x3.0mm, -40 to +125C
MFR Part #: TPS82085SILRSuperb SKU: SUP-TPS82085SILR
In Stock - Ready to Ship
The TPS82085SILR is a 3A step-down DC-DC converter MicroSiP module from Texas Instruments, integrating the buck converter IC and power inductor into a single 2.8x3.0mm package. Optimized for 2.5V to 6V input (single Li-Ion, USB 5V, 3.3V rails), it delivers up to 3A with 95% peak efficiency at 2.4MHz switching frequency. The DCS-Control topology provides fast transient response with seamless PWM-to-Power-Save transition, and the 17uA quiescent current extends battery life in always-on applications. With -40C to +125C operation and an ultra-compact footprint requiring only 4-5 external passives, it is the ideal power solution for IoT wearables, portable medical devices, and space-constrained battery-powered embedded systems.
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Key Performance Highlights
Output Current
3 A Continuous
Input / Output
2.5-6V in / 0.8-Vin out
Quiescent Current
17 uA (typical)
Switching Frequency
2.4 MHz (fixed)
Peak Efficiency
Up to 95%
Temperature Range
-40 to +125 C
Technical Specifications
| Manufacturer | Texas Instruments |
| Part Number | TPS82085SILR |
| Device Type | Step-Down (Buck) DC-DC Converter Module |
| Technology | MicroSiP (Micro System-in-Package) |
| Input Voltage | 2.5 V to 6.0 V |
| Output Voltage | 0.8 V to Vin (adjustable via resistor divider) |
| Output Current | 3 A continuous |
| Switching Frequency | 2.4 MHz (fixed) |
| Control Topology | DCS-Control (seamless PWM to Power Save Mode) |
| Quiescent Current (IQ) | 17 uA (typical) |
| Shutdown Current | < 0.2 uA (EN = low) |
| Efficiency | Up to 95% (5V to 3.3V, 1A typical) |
| 100% Duty Cycle | Yes (low-dropout operation) |
| Features | Power Good, Enable, output discharge, thermal shutdown, UVLO |
| Operating Temperature | -40C to +125C (junction) |
| Package | 8-uSiP (2.8 mm x 3.0 mm) |
| Mounting | Surface Mount (SMT) |
| RoHS | RoHS Compliant |
TI MicroSiP Buck Module Selection
| Feature | TPS82085SILR | TPS82130SILR | TPS82084SILR |
|---|---|---|---|
| Output Current | 3 A | 3 A | 2 A |
| Input Voltage | 2.5 V - 6 V | 3 V - 17 V | 2.5 V - 6 V |
| Quiescent Current | 17 uA | 1.7 uA | 17 uA |
| Temperature | -40 to +125C | -40 to +85C | -40 to +125C |
| Frequency | 2.4 MHz | 2.5 MHz | 2.4 MHz |
| Ideal Use | Li-Ion battery apps | 12V/industrial rails | Lower-power IoT devices |
Product Details
Low-Voltage Battery Power Optimization
The TPS82085SILR is purpose-built for the 2.5V-6V input range, making it ideal for single-cell Li-Ion/Li-Po, USB 5V, and 3.3V point-of-load applications. The 100% duty cycle capability allows output to follow the declining battery voltage, maximizing usable discharge — critical in wearables, IoT sensors, and portable medical devices where every milliwatt-hour counts.
Extended Temperature: The -40C to +125C junction temperature rating supports harsh environments — factory floors, outdoor IoT gateways, and under-hood automotive accessories — where industrial-grade components are mandatory and commercial-grade ICs fail.
Key Applications
Li-Ion Battery-Powered Devices - Wearables, portable medical, handheld instruments
5V USB-Powered Designs - USB dongles, portable speakers, power banks
3.3V Point-of-Load - FPGA/DSP core rails, sensor power, MCU sub-regulation
Industrial IoT Nodes - Environmental sensors, asset trackers, remote monitors
Automotive Accessories - Dashcams, OBD-II dongles, telematics (12V to 5V pre-reg downstream)
Compact Embedded Modules - System-on-module carrier boards, M.2 power supplies
Why Source TPS82085SILR from Superb Automation?
Power Rail BOM Kitting - TPS82085 + input/output capacitors + feedback resistors - one PO
Compact PCB Design - Optimized MicroSiP footprint, proper grounding for low EMI, 4mm^2 total solution
Battery Life Validation - 17uA IQ verification and battery drain profiling for IoT/wearables designs
SMT Assembly - uSiP module reflow with proper pad stencil for reliable solder joints
25 Years Trusted - Electronic components + PCBA partner since 2000
Genuine Parts - Direct from trusted TI channels, full lot traceability
Frequently Asked Questions
What is the TPS82085SILR used for?
The TPS82085SILR is a 3A buck converter module optimized for low-voltage (2.5-6V) input rails. It powers Li-Ion battery devices, USB 5V point-of-load converters, IoT wearables, and industrial sensors. Its integrated inductor and 17uA quiescent current make it ideal where both board space and battery drain matter.
What is the difference between TPS82085 and TPS82130?
TPS82085: 2.5-6V input, up to +125C, 17uA IQ — optimized for battery-powered, high-temperature applications. TPS82130: 3-17V input, up to +85C, 1.7uA IQ — optimized for 12V industrial rails and ultra-low standby power. Both deliver 3A with integrated inductors.
Can it operate direct from a Li-Ion battery?
Yes. With 2.5V minimum input, it operates down to near-depleted Li-Ion cells. 100% duty cycle mode tracks output down with the battery, maximizing usable capacity. The 17uA IQ is low enough for always-on wearables and IoT sensors running months on a single charge.
What external components are required?
Just 4-5 passives: 1x input capacitor, 1x output capacitor, 2x feedback resistors, and optional PG pull-up. The inductor and compensation are integrated. No external inductor, Schottky diode, or compensation network needed — the complete 3A power supply fits under 40mm^2.
What is the output voltage setting formula?
VOUT = 0.8V x (1 + R1/R2), where R1 connects from VOUT to FB, and R2 connects from FB to GND. Reference voltage is 0.8V. Use 1% or better resistors for accurate output. TI provides recommended values for common voltages in the datasheet. Compensation is internal — no external selection.