Overview
The TPS62740DSSR from Texas Instruments is a highly efficient, ultra-low quiescent current step-down converter designed for low-power applications. This device features TI's advanced DCS-Control™ topology, which combines the benefits of hysteretic and voltage mode control to achieve excellent AC load regulation, transient response, and low output ripple voltage. The TPS62740DSSR is optimized for use in battery-powered devices, energy harvesting systems, and other applications where power efficiency is critical.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN) | 2.2 | - | 5.5 | V |
| Output Voltage Range (VOUT) | 1.8 | - | 3.3 | V |
| Output Current (IOUT) | - | - | 300 | mA |
| Quiescent Current (IQ) | - | 360 | 1800 | nA |
| Switching Frequency | - | Up to 2 | - | MHz |
| Operating Junction Temperature Range | -40 | - | 125 | °C |
| Ambient Temperature Range | -40 | - | 85 | °C |
| Package Type | - | - | WSON (12-pin, 2x3 mm²) | - |
Key Features
- Ultra-Low Quiescent Current: Typical 360nA quiescent current, making it suitable for low-power applications.
- DCS-Control™ Topology: Combines the advantages of hysteretic and voltage mode control for excellent AC load regulation and transient response.
- High Efficiency: Up to 90% efficiency at 10µA output current, extending high efficiency operation to very low load currents.
- Selectable Output Voltage: Output voltage is selectable in 100mV steps from 1.8V to 3.3V using four VSEL pins.
- Low Output Ripple Voltage: Low noise operation with a small output capacitor.
- Automatic Transition to No Ripple 100% Mode: The device enters no ripple 100% mode operation when the battery voltage approaches the output voltage.
- Slew Rate Controlled Load Switch: Integrated load switch with a typical on-resistance of 0.6Ω.
- Power Good Output: Indicates when the output voltage is within the specified range.
- Small Solution Size: Total solution size less than 31mm² with a tiny 2.2µH inductor and 10µF output capacitor.
Applications
- Bluetooth® Low Energy, RF4CE, Zigbee: Suitable for wireless communication devices requiring low power consumption.
- Industrial Metering: Used in industrial metering applications where power efficiency is crucial.
- Energy Harvesting: Ideal for energy harvesting systems due to its high efficiency at low load currents.
- Low Power MCU and RF Subsystem (Sensors): Supports low power microcontrollers and RF subsystems in sensor applications.
Q & A
- What is the input voltage range of the TPS62740DSSR?
The input voltage range is from 2.2V to 5.5V.
- What is the typical quiescent current of the TPS62740DSSR?
The typical quiescent current is 360nA.
- What is the maximum output current of the TPS62740DSSR?
The maximum output current is 300mA.
- What is the switching frequency range of the TPS62740DSSR?
The switching frequency can go up to 2 MHz.
- How is the output voltage selected on the TPS62740DSSR?
The output voltage is selectable in 100mV steps from 1.8V to 3.3V using four VSEL pins.
- What is the DCS-Control™ topology used in the TPS62740DSSR?
DCS-Control™ is an advanced regulation topology that combines the advantages of hysteretic and voltage mode control for excellent AC load regulation and transient response.
- What is the package type and size of the TPS62740DSSR?
The device is available in a 12-pin WSON package with a size of 2x3 mm².
- What are some typical applications of the TPS62740DSSR?
Typical applications include Bluetooth® Low Energy, RF4CE, Zigbee, industrial metering, energy harvesting, and low power MCU and RF subsystems (sensors).
- How does the TPS62740DSSR handle low load conditions?
The device enters no ripple 100% mode operation when the battery voltage approaches the output voltage, preventing an increase in output ripple voltage.
- What is the operating junction temperature range of the TPS62740DSSR?
The operating junction temperature range is from -40°C to 125°C.
