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

2-Wire Interface Gives Processor Control of PWM Functions

Product Details

Key Features

Applications/Uses

Parametric specs for Programmable Pulse Width Modulators
fOUT (kHz) 25
Frequency Variation ±20%
Program Range 0 to 100% Duty Cycle
Interface 2-Wire
VSUPPLY (V) 2.7 to 5.5
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.45
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Simplified Block Diagram

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Parameters

Parametric specs for Programmable Pulse Width Modulators
fOUT (kHz) 25
Frequency Variation ±20%
Program Range 0 to 100% Duty Cycle
Interface 2-Wire
VSUPPLY (V) 2.7 to 5.5
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.45

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

Applications/Uses

  • Automated Test Equipment (ATE)
  • Battery Chargers
  • Building Energy Management (HVAC)
  • LCD Displays and Panels
  • Motor and Motion Control
  • Power Supplies
  • Sensors - Temperature

Description

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.

Simplified Block Diagram

DS1050: Block Diagram DS1050: Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .