Sub-1-V analog timer revolutionizes the conventional 555 timer
The SX8122 sub-1-V analog timer platform is said to revolutionize the conventional 555 timer for low-voltage, battery-operated small appliances. The device is claimed to offer the best-in-class battery life via its intrinsic 0.9-V operation, without the need for an external boost converter and inductor, saving board space and cost.
It also adds low-voltage features to the legacy 555 timer, with one output that controls a dc motor or another continuous low-voltage element and another output that generates a pulse train to drive a high-brightness LED from a single battery. This combination of features makes the SX8122 suitable for a wide range of small consumer home and office appliances, such as electric toothbrushes, buzzers, toys, and LED pointers. The device also includes a voltage monitor to enable a simple USB charger for NiMH- or NiCd-supplied devices.
The timer operates between 0.9 and 2 V over the full industrial temperature range of –40° to 85°C, making it ideally suited to run from one AA or AAA alkaline, NiMH, or NiCd battery. It provides battery safe operation with 0.6-V I/O control. Housed in an 8-pin SOIC package, the timer also directly provides dc and burst outputs, allowing it to drive continuous loads, as well as loads with high threshold voltage. ($0.36 ea/2,500 — available now.)
Semtech , Camarillo , CA
Sales 805-498-2111
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