SWRT026 September 2023 CC2340R5 , TPS22916 , TPS61299
Description
With the growing push for smaller and low-power connected devices, systems face a dual challenge: achieving ultra-low quiescent and shutdown currents while adapting to lower supply voltages. Advancements in battery manufacturing bring high-power density chemistries such as Silver-Oxide and Zinc-Air to more devices including medical wearables, Internet of Things (IoT) devices, and measurement instrumentation. This results in a need for small connected systems that operate with supply voltages as low as 1 V and shutdown currents in the 10s of nA range.
Block Diagram |
Example Implementation |
Features
- Active standby system-level currents down to 1 µA with 1.5-V supplies and minimal component count.
- System level shelf-mode and ship-mode currents as low as 60 nA without a load switch and down to 10 nA with a load switch.
Applications
Recommended Devices
| Part Number | Range | Standby Current | Shutdown Current | Package | Features |
|---|---|---|---|---|---|
| CC2340R5 | 1.71 V – 3.8 V | 700 nA | 150 nA | QFN (4 mm
× 4 mm) WCSP (2.2 mm × 2.6 mm) |
Bluetooth® 5.3 Low
Energy, 12-bit ADC |
| TPS61299 | 0.7 V – 5.5 V | 155 nA | 60 nA | WCSP (1.2 mm × 0.8 mm) | High efficiency across load ranges |
| TPS22916 | 1.0 V – 5.5 V | 500 nA | 10 nA | WCSP (0.78 mm × 0.78 mm) | Low-leakage load switch |