Overview
The TPS61120RSARG4 is a specialized Power Management Integrated Circuit (PMIC) designed by Texas Instruments. This component is tailored for handheld and mobile devices, such as smartphones, tablets, and smartwatches, providing a comprehensive power supply solution. The IC is packaged in a compact 16-pin VQFN (RSA) package measuring 4 mm × 4 mm, making it ideal for space-constrained applications. It operates within a wide input voltage range of 1.8 V to 5.5 V and can generate two stable output voltages, either adjusted by an external resistor divider or fixed internally on the chip.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS61120RSARG4 |
| Package/Case | 16-QFN (4x4 mm) |
| Pin Count | 16 |
| Operating Temperature Range | -40°C to 85°C |
| Input Voltage Range | 1.8 V to 5.5 V |
| Output Voltage Options | Fixed and Adjustable up to 5.5 V |
| Boost Converter Output Current | Up to 500 mA |
| LDO Output Current | Up to 200 mA |
| Quiescent Current | 40 µA (Typical) |
| Efficiency | Up to 95% |
| RoHS Status | Compliant |
Key Features
- Synchronous Boost Converter: Achieves up to 95% efficiency using a fixed frequency, pulse-width-modulation (PWM) controller with a synchronous rectifier.
- Integrated LDO: Provides a second output voltage derived from the boost output or directly from the battery, with up to 200 mA output current.
- Power Save Mode: Improves efficiency at low output power.
- Low EMI Mode: Reduces ringing and radiated electromagnetic energy in discontinuous conduction mode.
- Load Disconnect During Shutdown: Minimizes battery drain by completely disconnecting the load from the battery.
- Power Good Output: Simplifies control of connected circuits like cascaded power supply stages or microprocessors.
- Overtemperature Protection: Ensures device reliability under extreme conditions.
Applications
- Handheld and Mobile Devices: Smartphones, tablets, and smartwatches.
- Battery-Powered Devices: Devices powered by one-cell Li-Ion or Li-Polymer batteries, or two- to four-cell Alkaline, NiCd, or NiMH batteries.
- Portable Electronics: Any application requiring low-power consumption, high-efficiency power management, and a small form factor.
Q & A
- What is the primary function of the TPS61120RSARG4?
The TPS61120RSARG4 is a specialized PMIC that provides a complete power supply solution, including a boost converter and an integrated LDO, for handheld and mobile devices.
- What are the input voltage range and output voltage options of the TPS61120RSARG4?
The input voltage range is 1.8 V to 5.5 V, and the output voltage can be fixed or adjustable up to 5.5 V.
- What is the efficiency of the boost converter in the TPS61120RSARG4?
The boost converter achieves up to 95% efficiency.
- What is the purpose of the integrated LDO in the TPS61120RSARG4?
The integrated LDO provides a second output voltage derived from the boost output or directly from the battery, with up to 200 mA output current.
- How does the TPS61120RSARG4 minimize battery drain during shutdown?
The device completely disconnects the load from the battery during shutdown.
- What is the operating temperature range of the TPS61120RSARG4?
The operating temperature range is -40°C to 85°C.
- Is the TPS61120RSARG4 RoHS compliant?
Yes, the TPS61120RSARG4 is RoHS compliant.
- What are some key applications of the TPS61120RSARG4?
Key applications include handheld and mobile devices, battery-powered devices, and other portable electronics requiring high-efficiency power management.
- What is the quiescent current of the TPS61120RSARG4?
The typical quiescent current is 40 µA.
- Does the TPS61120RSARG4 have overtemperature protection?
Yes, the device includes overtemperature protection to ensure reliability under extreme conditions.
