Overview
The TPS61120RSAR, manufactured by Texas Instruments, is a highly efficient and versatile power management IC designed for a variety of battery-powered applications. This device is particularly suited for products powered by one-cell Li-Ion or Li-Polymer batteries, as well as two- to four-cell Alkaline, NiCd, or NiMH batteries. It integrates a synchronous boost converter with a 200-mA low-dropout regulator (LDO) to provide dual output voltages, making it an ideal solution for handheld and mobile devices.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-VQFN (RSA) with Exposed Pad |
| Pins | 16 |
| Operating Temperature Range | -40°C to 125°C |
| Input Voltage Range | 1.8 V to 5.5 V |
| Output Voltage Range | Up to 5.5 V (Fixed and Adjustable) |
| Boost Converter Output Current | Up to 500 mA |
| LDO Output Current | Up to 200 mA |
| Quiescent Current | Typical 40 µA |
| Switch Current Limit | 1600 mA |
| Efficiency | Up to 95% |
Key Features
- Synchronous, 95% efficient boost converter with a 500-mA output current from a 1.8-V input.
- Integrated 200-mA reverse voltage protected LDO for DC-DC output voltage post-regulation or a second output voltage.
- Low total device quiescent current of 40 µA (typical).
- Fixed and adjustable output voltage options up to 5.5 V.
- Power Save Mode for improved efficiency at low output power.
- Low battery comparator and power good output.
- Low EMI-converter with integrated antiringing switch.
- Load disconnect during shutdown and overtemperature protection.
Applications
The TPS61120RSAR is designed for use in handheld and mobile devices, including but not limited to:
- Smartphones and tablets.
- Portable media players and gaming devices.
- Wearable electronics such as smartwatches and fitness trackers.
- Other battery-powered consumer electronics.
Q & A
- What is the primary function of the TPS61120RSAR?
The TPS61120RSAR is a synchronous boost converter with an integrated 200-mA LDO, designed to provide efficient power conversion for battery-powered devices.
- What are the input and output voltage ranges of the TPS61120RSAR?
The input voltage range is 1.8 V to 5.5 V, and the output voltage range is up to 5.5 V (both fixed and adjustable options are available).
- What is the maximum output current of the boost converter?
The maximum output current of the boost converter is up to 500 mA.
- What is the quiescent current of the device?
The typical quiescent current is 40 µA.
- Does the TPS61120RSAR have any built-in protection features?
Yes, it includes overtemperature protection, load disconnect during shutdown, and reverse voltage protection for the LDO.
- What is the efficiency of the boost converter?
The boost converter has an efficiency of up to 95%.
- What package options are available for the TPS61120RSAR?
The device is available in a 16-pin VQFN (RSA) package and a 16-pin TSSOP (PW) package.
- What are some common applications for the TPS61120RSAR?
Common applications include handheld and mobile devices such as smartphones, tablets, portable media players, and wearable electronics.
- Does the TPS61120RSAR have a low EMI mode?
Yes, it has a low EMI mode implemented to reduce ringing and lower radiated electromagnetic energy.
- How does the power save mode improve efficiency?
The power save mode improves efficiency at low output power by optimizing the converter's operation to minimize power loss.
