Silicon Labs' low power TS3310, TS3312, and TS3314 boost switching regulators have an industry leading low quiescent current as low as 150 nA. This 150 nA is the actual current consumed from the battery while the output is in regulation. These device’s extremely low power internal circuitry consumes 90 nA on average, with periodic switching cycles which service the load occurring at intervals of up to 25 seconds, together yielding the average 150 nA. The dc-dc converter steps up input voltages from 0.9 V to 3.6 V to eight digitally selectable output voltages ranging from 1.8 V to 5 V (TS3310 & TS3312), or 4.0 V to 4.9 V (TS3314). The TS331x devices are available with under voltage lock out of 0.85 V (TS3310 & TS3314), or 1.9 V (TS3312). These devices include two outputs, one is always on, the second is controlled by a load switch to allow a leaky load to be powered down when not needed and turned ‘instantly’ on to support bursts of current, which can exceed the rate current output of the battery if a storage capacitor is used.
The extremely low quiescent current combined with the output load switch make the TS331x converters an ideal choice for applications where the load can be periodically powered from the output, while being disconnected from the output storage capacitor when the load is powered off to isolate the load’s leakage current.
The TS3310, TS2212, and TS3314 are fully specified over the -40 to +85°C temperature range and are available in a low-profile, thermally-enhanced 10-pin 2 x 2 mm TDFN package with an exposed back-side paddle.
- Ultra-Efficient Boost Converter
- Ultra low power (IQ as low as 150 nA)
- Instant on for burst loads, e.g. Zigbee radios
- Anti-Crush maintains power with depleted batteries
- Single-inductor, Discontinuous Conduction Mode Operation
- No External Schottky Diode Required
- Pin-Selectable Output Voltages