Overview
The TPS82740BSIPR from Texas Instruments is a highly integrated step-down converter module designed for ultra-low power applications. It features an industry-leading typical quiescent current consumption of 360 nA, making it ideal for battery-powered devices and energy harvesting systems. The module includes a switching regulator, inductor, and input/output capacitors, all integrated into a small 2.3 mm × 2.9 mm MicroSIP™ package. This compact solution supports output currents up to 200 mA and operates from input voltages ranging from 2.2 V to 5.5 V, including rechargeable Li-Ion batteries, Li-primary battery chemistries, and USB ports.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | uSiP (SIP) | - |
| Pins | 9 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Quiescent Current | 360 nA (typ.) | nA |
| Input Voltage Range | 2.2 to 5.5 | V |
| Output Voltage Range | 2.6 to 3.3 V (TPS82740B) | V |
| Output Current | Up to 200 mA | mA |
| Efficiency at 10-µA Output Current | Up to 90% | % |
| Output Voltage Ripple | Low | - |
| Load Switch ON-Resistance | 0.6 Ω (typ.) | Ω |
| Package Size | 2.3 mm × 2.9 mm | mm |
Key Features
- 360-nA typical quiescent current consumption, ideal for ultra-low power applications.
- Up to 90% efficiency at 10-µA output current.
- Pin-selectable output voltages in 100-mV steps.
- Integrated slew rate controlled load switch with a typical ON-resistance of 0.6 Ω.
- RF friendly DCS-Control™ topology for excellent AC load regulation and transient response.
- Low output voltage ripple and automatic transition to no ripple 100% mode.
- Discharge function on VOUT and LOAD.
- Sub 1.1-mm profile solution with a total solution size of less than 6.7 mm².
Applications
- Bluetooth® Low Energy, RF4CE, and Zigbee devices.
- Wearable electronics.
- Energy harvesting systems.
- Battery-powered devices, including those using rechargeable Li-Ion batteries, Li-primary battery chemistries, and alkaline batteries.
- Systems powered by USB ports or thin-film solar modules.
Q & A
- What is the typical quiescent current consumption of the TPS82740BSIPR?
The typical quiescent current consumption is 360 nA.
- What is the input voltage range for the TPS82740BSIPR?
The input voltage range is from 2.2 V to 5.5 V.
- How is the output voltage selected for the TPS82740BSIPR?
The output voltage is user-selectable by three voltage select pins (VSEL) in 100-mV steps.
- What is the maximum output current supported by the TPS82740BSIPR?
The maximum output current supported is up to 200 mA.
- What is the DCS-Control™ topology and its benefits?
DCS-Control™ is an advanced regulation topology that combines the advantages of hysteretic and voltage mode control, offering excellent AC load regulation, transient response, and low output ripple voltage. It seamlessly transitions between PFM and PWM mode operation.
- What are the typical applications for the TPS82740BSIPR?
Typical applications include Bluetooth® Low Energy, RF4CE, Zigbee devices, wearable electronics, and energy harvesting systems.
- How does the device handle low load conditions?
The device enters Power Save Mode at light loads, maintaining high efficiency down to very low load currents. It also transitions to no ripple 100% mode when the battery voltage is close to the output voltage.
- What is the package size of the TPS82740BSIPR?
The package size is 2.3 mm × 2.9 mm in a MicroSIP™ package.
- Does the TPS82740BSIPR have an integrated load switch?
Yes, it features an integrated slew rate controlled load switch with a typical ON-resistance of 0.6 Ω.
- What is the thermal performance of the TPS82740BSIPR?
The junction-to-ambient thermal resistance (RθJA) is 83 °C/W.
