Electronic Design
Regulator Integrates Power-On Reset And Watchdog Timer

Regulator Integrates Power-On Reset And Watchdog Timer

The LT3688 dual, 800-mA, 36V input step-down switching regulator integrates a dual power-on reset and a watchdog timer. The device resides in a 4 mm x 4 mm QFN-24 or thermally enhanced TSSOP–24 package. Other features include an input range from 3.8V to 36V, a ripple of less than 25 mVp-p, synchronizable and adjustable 350-kHz to 2.2 -MHz switching frequency, two 800-mA switching regulators with power switches, and programmable input under-voltage lockout with hysteresis. LINEAR TECHNOLOGY CORP., Milpitas, CA. (800) 454-6327.

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