DS1050Z-001+T&R

Overview

The DS1050Z-001+T&R is a single-channel, 5-bit programmable pulse-width modulator (PWM) from the DS1050 family. It operates on a 2-wire addressable serial interface and generates a PWM output with frequencies of 1kHz. The device supports a supply voltage range of 2.7V to 5.5V and draws a typical active current of 50µA. It features adjustable duty cycles from 0% to 96.88% in 3.125% steps, or 100% via a dedicated command. Packaged in an 8-pin SOIC, it functions as a slave on the bus, allowing multiple units to be controlled simultaneously.

Feature Summary

• Single 5-bit PWM generator with 1kHz fixed output frequency
• 2-Wire addressable serial interface supporting standard and fast modes
• Adjustable duty cycle from 0% to 96.88% or 100% full-on
• Low power consumption: 50µA active, 1µA standby

Applications

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

Procurement Notes

Verify the + suffix indicates RoHS compliance and halogen-free status. Confirm the T&R suffix denotes tape and reel packaging for automated assembly. Ensure the Z suffix corresponds to the 150-mil SOIC package variant. Check for obsolescence status as older Maxim Integrated parts may have limited availability.

Selection Notes

Select this part for applications requiring a low-cost, single-channel PWM signal at 1kHz. Choose alternative suffixes (005, 010, 025) if different output frequencies are needed. Use the U-series variants for space-constrained designs requiring the 118-mil µSOP package instead of the standard SOIC.

Part Context

This component belongs to the DS1050 series of programmable PWMs. The 'Z' suffix identifies the 8-pin 150-mil SOIC package, while '001' specifies the 1kHz frequency option. The '+T&R' designation confirms lead-free manufacturing and tape-and-reel shipping format.

Replacement Considerations

Direct pin-compatible replacements within the same family include DS1050Z-005, DS1050Z-010, and DS1050Z-025 for different frequencies. For package changes, consider the DS1050U-001 in the smaller µSOP package. Cross-vendor equivalents require verification of 2-wire interface compatibility and electrical parameters.

FAQ

What is the maximum duty cycle resolution?

The device offers 5-bit resolution, allowing duty cycle adjustments in steps of 3.125% from 0% to 96.88%. A separate command enables a 100% duty cycle.

How many devices can be addressed on a single bus?

Eight devices can be uniquely addressed using the three hardware address pins (A0, A1, A2), which determine the slave address bits.

What is the shutdown current specification?

In shutdown mode, the supply current drops to a maximum of 1µA, and the PWM output enters a high-impedance state.