TPS63900 75 nA IQ Buck-Boost Converter

Product Highlights > TPS63900 75 nA IQ Buck-Boost Converter

            TPS63900 75 nA IQ Buck-Boost Converter
                    Texas Instruments' 1.8 V to 5.5 V converter features input current limit and dynamic voltage scaling (DVS)
    

Image of Texas Instruments' TPS63900 75nA IQ Buck-Boost Converter Texas Instruments' TPS63900 device is a high-efficiency synchronous buck-boost converter with an extremely low quiescent current of 75 nA (typ.). The device has 32 user-programmable output voltage settings from 1.8 V to 5 V. A dynamic voltage-scaling feature lets applications switch between two output voltages during operation; for example, to save power by using a lower system supply voltage during standby operation. With its wide supply voltage range and programmable input current limit (1 mA to 100 mA and unlimited), the device is ideal for use with a wide range of primary such as 3S Alkaline, 1S Li-MnO₂ or 1S Li-SOCl₂, and secondary battery types. The high-output current capability supports commonly-used RF standards including sub-1 GHz, BLE, LoRa, wM-Bus, and NB-IoT.

Features

Input voltage range: 1.8 V to 5.5 V
Output voltage range: 1.8 V to 5 V (100 mV steps):
- Programmable with external resistors
- SEL pin to toggle between two output voltage presets
Output current: >400 mA for V_I ≥2.0 V, V_O = 3.3 V (typ. 1.45 A peak switching current limit):
- Stackable: parallel multiple devices for higher output current
Safety and robust operation features:
- Integrated soft-start
- Programmable input current limit with eight settings (1 mA to 100 mA and unlimited)
- Output short-circuit and overtemperature protection

Efficiency: >90% at 10 µA load current:
- Quiescent current: 75 n
- Shutdown current: 60 nA
Single-mode operation:
- Eliminates mode transitions between buck, buck-boost, and boost operation
- Low output ripple
- Excellent transient performance
Tiny solution size of 21 mm²
- Small 2.2 µH inductor, single 22 µF output capacitor
- 10-pin, 2.5 mm × 2.5 mm, 0.5 mm pitch WSON package

Applications

Smart meters and sensor nodes
Electronic smart locks
Medical sensor patches and patient monitors

Wearable electronics
Asset tracking
Industrial IoT (smart sensors), NB-IoT