TPS61086DRCR - 18.5V 2A Boost Converter 1.2MHz | Texas Instruments
MPN: TPS61086DRCR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
TPS61086DRCR Overview
A boost converter, also known as a step-up converter, is a type of DC-DC switching regulator that produces an output voltage higher than its input voltage. It is a fundamental building block in power management, sitting within the hierarchy of switching regulators, which belong to the broader category of power management integrated circuits (PMICs). Boost converters are essential in battery-powered applications where the battery voltage is lower than the required system rail.
Key features include a 2.0-A switch current limit, an adjustable output voltage from 2.8 V to 18.5 V, and a power save mode for improved efficiency at light loads, with the option to force PWM operation. The device also features adjustable soft-start to limit inrush current, thermal shutdown protection, and low quiescent current. The integrated 0.13-ohm switch minimizes conduction losses, contributing to high efficiency across a wide load range.
The TPS61086 uses a current-mode control architecture with a fixed 1.2-MHz switching frequency, balancing efficiency and external component size. The high switching frequency enables small, low-profile inductors and ceramic capacitors, reducing overall solution footprint. Power save mode reduces switching frequency at light loads to maintain efficiency, and forced PWM mode supports noise-sensitive applications.
Typical applications include battery-powered portable devices, white LED drivers, OLED display bias, and general-purpose step-up voltage regulation. The wide input range and high output capability suit loads requiring voltages above the battery rail. The small package and high efficiency make it ideal for space-constrained designs.
When designing with the TPS61086DRCR, ensure proper PCB layout with short, low-inductance paths for the switch node and output capacitor. The exposed pad should be soldered to a large copper area for thermal dissipation, and the inductor saturation current must exceed the peak switch current for stable operation.
Drop-in alternatives for TPS61086DRCR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS61085DRCR
⚡ Same Package📋 Reference alternative (not in catalog)
TPS61086DRCR Maximum Ratings & Electrical Characteristics
| Topology | Step-Up (Boost) |
| Input Voltage Range | 2.3 V to 6.0 V |
| Output Voltage Range | 2.8 V to 18.5 V (adjustable) |
| Number of Outputs | 1 |
| Switch Current | 2.0 A (integrated switch) |
| Switch On-Resistance | 0.13 ohm |
| Switching Frequency | 1.2 MHz (fixed PWM) |
| Control Mode | PFM/PWM, current mode |
| Power Save Mode | Yes (improved light-load efficiency; forced PWM option) |
| Soft-Start | Adjustable |
| Protection Features | Thermal shutdown |
| Output Polarity | Positive |
| Package | 10-VFDFN Exposed Pad (VSON, DRC) |
| Mounting Type | Surface Mount |
| Category | PMIC - Voltage Regulators, DC/DC Switching Regulators |
TPS61086DRCR 10-vfdfn exposed pad (vson, drc) Pin Configuration Guide
Pin configuration for TPS61086DRCR (10-vfdfn exposed pad (vson, drc) package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPS61086DRCR.
Refer to the datasheet for full pin configuration.
Typical Applications
TPS61086DRCR is suitable for 6 applications: Battery-Powered Portable Devices, White LED Driver, OLED Display Bias, General-Purpose Step-Up Regulation, Industrial and Automation Auxiliary Supplies, Test and Measurement Equipment.
Battery-Powered Portable Devices
The TPS61086DRCR fits portable electronics because its 2.3-V to 6.0-V input range covers single-cell Li-ion and two-cell alkaline supplies, while the integrated 2.0-A, 0.13-ohm switch supplies system rails above the battery voltage without an external FET. The 1.2-MHz fixed PWM frequency allows small, low-profile inductors and ceramic capacitors, minimizing board area in handheld form factors. Power save mode maintains efficiency when the load drops during standby, extending battery runtime, and adjustable soft-start limits inrush current at power-on.
Recommended
White LED Driver
White LED strings often need more voltage than a battery can supply, and the TPS61086DRCR boosts up to 18.5 V from inputs as low as 2.3 V, enough for several series LEDs. The fixed 1.2-MHz PWM operation keeps switching artifacts above the audio band and outside the visible flicker region, while forced-PWM mode provides predictable ripple for consistent brightness. The 0.13-ohm internal switch reduces conduction loss, and the exposed thermal pad of the DRC-10 package dissipates heat from LED driver power levels.
Recommended
OLED Display Bias
OLED panels require stable positive rails higher than the battery voltage, and the TPS61086DRCR generates up to 18.5 V with the 2.0-A switch providing headroom for panel brightness transients. The fast transient response of the 1.2-MHz current-mode control handles dynamic load changes when display content changes, and forced-PWM operation holds ripple low and constant, which matters for avoiding visible artifacts. Adjustable soft-start prevents inrush that could brown out the shared battery rail during panel startup.
Recommended
General-Purpose Step-Up Regulation
For boards that need a 12-V or 15-V auxiliary rail from a 5-V or 3.3-V supply, the TPS61086DRCR provides a compact single-IC solution: the integrated 2.0-A switch and adjustable feedback divider set any output from 2.8 V to 18.5 V with two resistors. The 1.2-MHz frequency keeps external magnetics small for space-constrained industrial boards, and the exposed-pad VSON package with thermal shutdown gives robustness at sustained loads. Power save mode keeps light-load efficiency high for always-on systems.
Recommended
Industrial and Automation Auxiliary Supplies
Industrial control boards frequently need a boosted analog or gate-drive rail derived from a low-voltage logic supply, and the TPS61086DRCR's 2.3-V to 6.0-V input and 18.5-V maximum output cover these cases. Thermal shutdown and adjustable soft-start improve fault tolerance on factory floors, while the fixed 1.2-MHz switching frequency simplifies EMI filter design with a predictable spectral signature. Forced-PWM mode keeps output impedance low and predictable for sensitive analog circuits sharing the boosted rail.
Recommended
Test and Measurement Equipment
Portable instruments and probe accessories often run from battery packs yet need bias rails well above the battery voltage, and the TPS61086DRCR provides up to 18.5 V with fast 1.2-MHz regulation for load steps. The low 0.13-ohm switch resistance limits self-heating in enclosed instruments, and the exposed pad enables copper-pour heat spreading on multilayer boards. Adjustable soft-start sequencing prevents supply contention with other converters during power-up of measurement front ends.
Recommended
Recommended Products Summary
Engineering reference data for TPS61086DRCR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS61085DRCR |
|---|---|---|
| Package | 10-VFDFN Exposed Pad (DRC) | 10-VFDFN Exposed Pad (DRC) - same |
| Brand | Texas Instruments | Texas Instruments |
| Maximum Output Voltage | 18.5 V | 18.5 V |
| Package Match | Baseline | Same DRC-10 footprint |
Key Differentiators
- Higher switch current in the same family footprint (vs TPS61085DRCR)
- Low on-resistance integrated switch (vs TPS61085DRCR)
- Forced-PWM option for noise-sensitive rails (vs TPS61085DRCR)
Design Notes
Place the input capacitor, output capacitor, and inductor as close as possible to the TPS61086DRCR with short, low-inductance switch-node traces. The exposed pad on the bottom of the 10-pin VSON (DRC) package must be soldered to a substantial copper pour connected to ground to dissipate switching losses; a poor exposed-pad connection is the most common cause of thermal shutdown in production boards.
Select an inductor with a saturation current rating above the peak switch current, which can reach the 2.0-A limit of the integrated switch. If the inductor saturates before the current limit, regulation collapses and ripple spikes. The 1.2-MHz fixed frequency allows smaller inductance values, but verify the DC-bias derating curve of the chosen inductor at the actual peak current.
The TPS61086 operates at a fixed 1.2 MHz, which concentrates switching energy at a predictable frequency and simplifies EMI filter design compared with variable-frequency converters. If radiated emissions are marginal, use forced-PWM mode only where necessary and add a small RC snubber on the switch node; power save mode naturally reduces average switching activity at light load.
Use the adjustable soft-start pin to limit inrush current when the boost output charges the output capacitance from a weak battery or a current-limited upstream supply. Omitting soft-start can cause the input rail to sag below the 2.3-V minimum UVLO and trigger nuisance restart loops during startup into large loads.
Compliance Information
Compliance data not present in the provided verified web data; consult the TI product page quality section for RoHS/REACH status.
