DS1050Z-005+

Overview

The DS1050Z-005+ is a programmable, 5-bit pulse-width modulator (PWM) manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single power supply ranging from 2.7V to 5.5V and features a standard output frequency of 5kHz. The device includes a 2-wire addressable serial interface for communication. Key electrical parameters include an active supply current of 50µA and a standby current of 1µA. It supports duty cycles from 0% to 96.88% in 3.125% steps, with a command for 100% full-on operation. The component is housed in an 8-pin SOIC package.

Feature Summary

• Single 5-bit programmable PWM with adjustable duty cycle from 0% to 100%
• Standard 5kHz output frequency with ±20% tolerance
• 2-Wire addressable serial interface supporting Standard (100kHz) and Fast (400kHz) modes
• Low power consumption: 50µA active current and 1µA shutdown current

Applications

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

Procurement Notes

Verify the specific suffix 'Z' indicates the 8-pin 150-mil SOIC package variant when sourcing. Confirm that the required operating temperature range aligns with the -40°C to +85°C specification. Ensure the master controller supports the 2-wire protocol for proper addressing via pins A0, A1, and A2.

Selection Notes

Select this model specifically for applications requiring a fixed 5kHz PWM frequency. Choose between Z (SOIC) and U (µSOP) suffixes based on board space constraints. Ensure the system voltage remains within the 2.7V to 5.5V range to maintain specified electrical characteristics.

Part Context

This component belongs to the DS1050 family of 5-bit programmable pulse-width modulators. Other variants in the series include DS1050Z-001+ (1kHz), DS1050Z-010+ (10kHz), and DS1050Z-025+ (25kHz). All share identical pinouts, interfaces, and electrical specifications except for the nominal output frequency.

Replacement Considerations

Direct substitutes within the same family are DS1050U-005+ (same function, µSOP package). Cross-family replacements require verification of 2-wire compatibility and 5-bit resolution.