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DS1050：5 Bit Programmable, Pulse-Width Modulator: 1kHz, 5kHz, 10kHz, and 25kHz

2-Wire Interface Gives Processor Control of PWM Functions

The DS1050 is a programmable, 5-bit, pulse-width modulator featuring a 2-wire addressable controlled interface. The DS1050 operates from power supplies ranging from 2.7V up to 5.5V. The PWM output provides a signal that swings from 0V to VCC. The DS1050 requires a typical operating current of 50µA and a programmable shutdown supply current of 1µA. Four standard PWM output frequencies are offered and include 1kHz, 5kHz, 10kHz, and 25kHz. The 2-wire addressable interface allows operation of multiple devices on a 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 device is ideal for low-cost LCD contrast and/or brightness control, power supply voltage adjustment, and battery charging or current adjustment. The DS1050 is offered in standard integrated circuit packaging including the 8-pin (150-mil) SOIC and space-saving 8-pin (118-mil) µSOP.

Key Features Single 5-bit, programmable, pulse-width modulator (PWM) Adjustable Duty Cycle: 0% to 100% 2.7V to 5.5V Operation Standard Frequency Values: 1kHz, 5kHz, 10kHz, and 25kHz 2-Wire Addressable Interface Packages: 8-Pin (150-mil) SOIC and 8-Pin (118-mil) µSOP Operating Temperature: -40°C to +85°C

DS1050: Block Diagram Applications/Uses Automated Test Equipment (ATE) Battery Chargers Building Energy Management (HVAC) LCD Displays and Panels Motor and Motion Control Power Supplies Sensors - Temperature

DataSheet

Parametrics

Quality and Environmental Data

• DS1050.pdf

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