DS1050Z-001+

Overview

The DS1050Z-001+ is a single-channel, 5-bit programmable pulse-width modulator (PWM) from Analog Devices/Maxim Integrated. It operates on a 2.7V to 5.5V supply and features a standard 1kHz output frequency. The device utilizes a 2-wire addressable serial interface for control, allowing duty cycle adjustment from 0% to 100%. It supports multiple devices on a single bus via hardware address pins A0-A2. The component is housed in an 8-pin (150-mil) SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• 5-bit PWM resolution with adjustable duty cycle from 0% to 100%
• Standard 1kHz output frequency
• 2-Wire addressable serial interface compatible with standard/fast modes
• Low power consumption: 50µA active current, 1µA standby current

Applications

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

Procurement Notes

Verify the ordering suffix Z indicates the 150-mil SOIC package variant. Confirm RoHS compliance status as '+'. Check availability as this series may be discontinued or have limited stock. Ensure the master controller supports the required 2-wire protocol timing for standard or fast mode operation.

Selection Notes

Select DS1050Z-001+ specifically for 1kHz applications. Use DS1050U variants for space-saving 118-mil µSOP packages. Verify address pin configurations (A0-A2) to ensure unique addressing if multiple units are used on the same bus. Consider the ±20% frequency tolerance for precision requirements.

Part Context

The DS1050Z-001+ belongs to the DS1050 family of programmable PWMs. It shares functional characteristics with other frequency variants like DS1050Z-005 (5kHz), DS1050Z-010 (10kHz), and DS1050Z-025 (25kHz). The 'Z' suffix denotes the standard 150-mil SOIC package, while 'U' denotes the smaller µSOP.

Replacement Considerations

Direct substitutes include other DS1050Z frequency variants (DS1050Z-005, DS1050Z-010, DS1050Z-025) if frequency flexibility allows. Package alternatives exist in the DS1050U series for different footprint requirements.