Low-Voltage, Dual/Triple/Quad Monitors Offer Capacitor-Adjustable Delay Timing for Power Sequencing
| Note to Editor: The MAX16025-MAX16030 and MAX16041/MAX16042/MAX16043 are dual-/triple-/quad-voltage monitors that can sequence voltages and provide a power-on reset when all the voltages are within their specification. These voltage monitors offer capacitor-adjustable timing to meet complex sequence timing requirements. These devices can be used to sequence multiple voltages or as independent supervisory devices. With their flexibility maximized for designer convenience, one device can be purchased and held in inventory across multiple projects. |
SUNNYVALE, CA-August 18, 2006-Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX16025/MAX16026/MAX16041 (dual), the MAX16027/MAX16028/MAX16042 (triple), and the MAX16029/MAX16030/MAX16043 (quad) voltage monitors with capacitor-adjustable timing delays to meet today's complex power-sequencing requirements.
The MAX16025/MAX16027/MAX16029 have open-drain outputs and reset outputs, the MAX16026/MAX16028/MAX16030 have push-pull outputs, and the MAX16041/MAX16042/MAX16043 have open-drain outputs with a push-pull reset output. When all the monitored voltages are above their respective specified threshold, a separate reset output de-asserts to allow the microcontroller to operate. All these devices can operate from 2.2V to 28V with outputs capable of handling up to 28V, which allows them to easily interface to standard bus voltages.
Two logic inputs are used to select one of nine threshold options. These nine options offer fixed (3.3V, 2.5V, 1.8V, 1.5V, and 1.2V) and user-adjustable thresholds for monitoring voltages as low as 0.5V. The combination of selectable and adjustable thresholds and capacitor timing makes these devices ideal for use across multiple design platforms, and thus simplifies inventory management.
The MAX16025-MAX16030 and MAX16041/MAX16042/MAX16043 also include enable inputs for controlling each monitor, a tolerance input to select for a -7.5% or -12.5% nominal threshold, a manual-reset input, and a fixed- or adjustable-reset timeout feature. All devices are specified from -40°C to +125°C, and are offered in a small, lead-free, 4mm x 4mm TQFN package. Prices start at $1.19 (1000-up, FOB USA).
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