Item specifics
Description
TPS61288LRQQR Product Overview
The TPS61288LRQQR is a high-power-density, fully integrated synchronous boost converter from Texas Instruments, housed in a 2.5mm × 3.0mm VQFN-HR-11 package featuring HotRod™ Lite technology for optimized thermal performance. With an integrated 6.5mΩ power switch and an 8.5mΩ rectifier switch, the device achieves up to 15A switch current capability and 18V output voltage across a wide 2V (2.4V rising) to 18V input voltage range, delivering a high-efficiency, small-size power solution for portable systems powered by single-cell or two-cell Lithium batteries.
| Brand | Texas Instruments |
| Model | TPS61288LRQQR |
| Device Type | Fully Integrated Synchronous Boost Converter |
| Topology | Boost |
| Input Voltage (VIN) | 2.0V ~ 18V (2.4V min for startup) |
| Output Voltage (VOUT) | 4.5V ~ 18V (Adjustable) |
| Peak Switch Current Limit | 15 A |
| Low-Side MOSFET RDS(on) | 6.5 mΩ |
| High-Side MOSFET RDS(on) | 8.5 mΩ |
| Switching Frequency | 500 kHz |
| Efficiency (Typical) | 94.7% @ VIN=3.6V, VOUT=13V, IOUT=2A; 96.9% @ VIN=7.2V, VOUT=16V, IOUT=2.5A |
| Quiescent Current (VOUT Pin) | 110 µA (Typical) |
| Shutdown Current (VIN Pin) | 2.1 µA Max |
| Control Mode | Peak Current Mode, SOO Modulation |
| Protections | Output OVP (19V), Cycle-by-Cycle OCP, Thermal Shutdown |
| Package | VQFN-HR (RQQ), 11 pins |
| Package Size | 2.5 mm × 3.0 mm |
| Operating Temp (TJ) | -40℃ ~ +125℃ |
| MSL | Level-2-260C-1 YEAR |
TPS61288LRQQR Applications
Bluetooth speaker power amplifier boost supply (40W output from single-cell Li-ion)
LCD display source driver power
USB Type-C Power Delivery (PD)
Portable audio devices and power banks
Single-cell or two-cell Li-ion battery-powered systems
Space-constrained designs requiring high-power-density boost solutions
FAQ
Q: What is the difference between TPS61288LRQQR and TPS61288RQQR?
A: Both share essentially identical electrical specifications (18V/15A/500kHz/VQFN-HR-11). The primary difference is package: TPS61288RQQR uses standard HotRod, TPS61288LRQQR uses HotRod Lite. The L version is recommended for thermal improvement.
Q: Can it output 40W from a single-cell Li-ion battery?
A: Yes. With a 15A peak switch current limit, the TPS61288 can deliver 40W output from a single-cell Li-ion battery, suitable for Bluetooth speaker power amplifier boost supply.
Q: What protection features are integrated?
A: 19V output overvoltage protection, cycle-by-cycle overcurrent protection, and thermal shutdown.
Q: How is loop response optimized?
A: The TPS61288 requires external compensation. The COMP pin is the output of the internal error amplifier. Adjusting the external RC network on COMP optimizes loop response for each application.
Q: How is light-load efficiency?
A: The device automatically transitions from PWM to PFM mode at light load and low duty cycle, with SOO modulation maintaining high efficiency and low output ripple over wide load/VIN ranges without DC offset between PFM and PWM.
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