DS1050Z-001

Overview

The DS1050Z-001 is a single 5-bit programmable pulse-width modulator (PWM) from Analog Devices/Maxim Integrated. It operates on a 2.7V to 5.5V supply with a typical active current of 50µA and standby current under 1µA. The device generates a fixed output frequency of 1kHz, with duty cycles adjustable from 0% to 96.88% in 3.125% steps, or set to 100%. It features an addressable 2-wire serial interface for communication. The component is housed in an 8-pin 150-mil SOIC package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• 5-bit PWM resolution with duty cycle adjustment from 0% to 96.88% (3.125% steps) plus a dedicated 100% full-on command
• Fixed 1kHz output frequency with ±20% tolerance and low power consumption (50µA active, <1µA shutdown)
• 2-Wire addressable serial interface supporting standard (100kHz) and fast (400kHz) modes
• 8-pin 150-mil SOIC package with industrial temperature rating (-40°C to +85°C)

Applications

• LCD contrast and brightness control
• Power supply voltage adjustment
• Battery charging or current adjustment

Procurement Notes

Verify the specific ordering suffix '001' confirms the 1kHz frequency variant. Confirm the 'Z' suffix indicates the 150-mil SOIC package style. Check RoHS compliance status as historical data may vary by production batch. Ensure the source document matches the manufacturer designation for Analog Devices/Maxim Integrated components.

Selection Notes

Select this part when a fixed 1kHz PWM signal is required. Use the DS1050Z-005, Z-010, or Z-025 variants if higher frequencies of 5kHz, 10kHz, or 25kHz are needed. Choose the DS1050U series for the smaller 118-mil µSOP package. Ensure the system bus supports the 2-wire protocol and that address pins A0-A2 can be configured for unique device selection.

Part Context

The DS1050Z-001 belongs to the DS1050 family of 5-bit programmable PWMs. It shares the same core architecture and interface as other frequency variants (005, 010, 025) and package options (U-series). The 'Z' suffix specifically denotes the standard 150-mil SOIC footprint, distinguishing it from the space-saving µSOP option.

Replacement Considerations

Direct functional replacements within the same family include DS1050Z-005 (5kHz), DS1050Z-010 (10kHz), and DS1050Z-025 (25kHz) for different frequency requirements. For package changes, the DS1050U-001 offers the same electrical characteristics in a 118-mil µSOP package.