MAX5389

The MAX5389 features an up/down interface. The MAX5389 dual, 256-tap, volatile, low-voltage linear taper digital potentiometer offers three end-to-end resistance values of 10kI, 50kI, and 100kI. Operating from a single +2.6V to +5.5V power supply, the device provides a low 35ppm/°C end-to-end temperature coefficient. The MAX5389 is specified over the automotive -40°C to +125°C temperature range and is available in a 14-pin TSSOP package. The small package size, low supply operating voltage, low supply current, and automotive temperature range of the MAX5389 make the device uniquely suited for the portable consumer market, battery backup industrial applications, and the automotive market.

The features of MAX5389 can be summarized as (1)dual, 256-tap linear taper positions; (2)single +2.6V to +5.5V supply operation; (3)low (< 1A)quiescent supply current; (4)10k, 50k, 100k end-to-end resistance values; (5)up/down interface; (6)power-on sets wiper to midscale; (7)-40°C to +125°C operating temperature range.

The absolute maximum ratings of MAX5389 are (1)VDD to GND : -0.3V to +6V; (2)H_, W_, L_ to GND: -0.3V to the lower of (VDD + 0.3V)and +6V; (3)all other pins to GND: -0.3V to +6V; (4)continuous current into H_, W_, and L_ MAX5389L: Q5mA / MAX5389M: ±2mA / MAX5389N: ±1mA; (5)continuous power dissipation (TA = +70°C) 14-pin TSSOP (derate 10mW/°C above +70°C): 796.8mW; (6)operating temperature range: -40°C to +125°C; (7)junction temperature: +150°C; (8)storage temperature range: -65°C to +150°C; (9)lead temperature (soldering, 10s): +300°C; (10)soldering temperature (reflow): +260°C.