DS1050U-025+

The DS1050U-025+ is a 5bit programmable pulse width modulator (PWM) with 2-wire addressable controlled interface in 8 pin µMAX package. The PWM output provides signal that swings from 0V to VCC. The device requires typical operating current of 50µA and programmable shutdown supply current of 1µA. The 2-wire addressable interface allows operation of multiple devices on single 2-wire bus and provides compatibility with other Dallas Semiconductor 2-wire devices such as real time clocks (RTCs), digital thermometers and digital potentiometers. The DS1050 is ideal for low cost LCD contrast and/or brightness control, power supply voltage adjustment and battery charging or current adjustment.

• Supply voltage range from 2.7V to 5.5V
• Operating temperature range from -40°C to 85°C
• Standard PWM output frequency of 25KHz
• 2-wire interface gives processor control of PWM functions
• Adjustable duty cycle from 0% to 100%
• SCL clock frequency of 400KHz (fast mode) and 100KHz (standard mode)
• Output frequency tolerance of ±20% and output impedance of 200 ohm
• Absolute linearity of ±0.5LSB and relative linearity of ±0.25LSB
• Frequency temperature coefficient of ±200ppm/ºc
• Frequency voltage coefficient of 1.5% per V

Applications

Signal Processing

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party