Overview
The TPS62120DCNR, produced by Texas Instruments, is a highly efficient synchronous step-down DC-DC converter designed for low-power applications. This device supports up to 75-mA output current and operates over a wide input voltage range of 2 V to 15 V, making it suitable for various power sources including energy harvesting, battery-powered, and line-powered systems. The TPS62120DCNR features an advanced hysteretic control scheme that ensures high efficiency across the entire load current range, transitioning between pulse frequency modulation (PFM) and pulse width modulation (PWM) modes. It is available in a small 8-pin SOT-23 package, enhancing its suitability for space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2 V to 15 V |
| Output Current | Up to 75 mA |
| Output Voltage Range | 1.2 V to 5.5 V |
| Efficiency | Up to 96% |
| Switch Frequency | Up to 800 kHz |
| Quiescent Current in PFM Mode | 10 µA |
| Package Type | 8-pin SOT-23 |
| Operating Temperature Range | -40°C to 85°C |
| UVLO Thresholds | 2.5 V rising, 1.85 V falling |
Key Features
- Advanced hysteretic control scheme for high efficiency in both PFM and PWM modes
- Power save mode with 11-µA quiescent current
- Synchronous converter with no external rectifier needed
- Low output ripple voltage
- 100% duty cycle for lowest dropout
- Internal soft start
- Open-drain power good output (TPS62120)
- Open-drain output for output discharge (TPS62120)
- Small package size (8-pin SOT-23)
Applications
- Low power RF applications
- Ultra low power microprocessors
- Energy harvesting
- Industrial measuring devices
- Battery-powered and line-powered systems
Q & A
- What is the input voltage range of the TPS62120DCNR?
The input voltage range is from 2 V to 15 V.
- What is the maximum output current of the TPS62120DCNR?
The maximum output current is up to 75 mA.
- What is the efficiency of the TPS62120DCNR?
The efficiency can be up to 96%.
- What is the switch frequency of the TPS62120DCNR?
The switch frequency can be up to 800 kHz.
- What is the quiescent current in PFM mode?
The quiescent current in PFM mode is 10 µA.
- What package types are available for the TPS62120DCNR?
The device is available in an 8-pin SOT-23 package.
- What is the operating temperature range of the TPS62120DCNR?
The operating temperature range is from -40°C to 85°C.
- What are the UVLO thresholds for the TPS62120DCNR?
The UVLO thresholds are 2.5 V rising and 1.85 V falling.
- Does the TPS62120DCNR have a power good output?
- How does the TPS62120DCNR manage output discharge during shutdown?
The device has an additional SGND pin that connects to GND during shutdown, which can be used to discharge the output capacitor.
