DS1052Z-100+

Overview

The DS1052Z-100+ is a single-channel, 5-bit programmable pulse-width modulator (PWM) from Analog Devices Inc./Maxim Integrated. It operates on a 2-wire addressable serial interface and supports supply voltages from 2.7V to 5.5V. The device provides a standard PWM output frequency of 100kHz with an adjustable duty cycle ranging from 0% to 100%. It features low power consumption, drawing a typical operating current of 100µA and a shutdown current of 1µA. The component is housed in an 8-pin SOIC package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

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

Applications

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

Procurement Notes

Verify the ordering suffix Z-100+ corresponds to the 8-pin 150-mil SOIC package variant. Confirm the manufacturer designation as Analog Devices Inc./Maxim Integrated. Ensure compatibility with the specified 2.7V to 5.5V supply range and -40°C to +85°C operating temperature for the target application environment.

Selection Notes

Select this component when a low-cost, single-channel PWM solution with digital control is required. The 5-bit resolution offers 32 discrete duty cycle steps. Ensure the system design accommodates the 2-wire serial bus protocol and that the master controller can handle the specific command structure for setting duty cycles and managing shutdown states.

Part Context

The DS1052 series includes variants such as the DS1052U-100 in an 8-pin μSOP package. The Z-100 suffix specifically denotes the standard 8-pin SOIC form factor. This part belongs to the broader family of Dallas Semiconductor/Maxim Integrated devices compatible with other 2-wire peripherals like RTCs and digital potentiometers.

Replacement Considerations

The DS1052U-100 serves as a pin-compatible alternative if the 8-pin μSOP package is preferred over the SOIC. No other direct functional substitutes are documented in the provided source material.

FAQ

What is the default state of the DS1052 upon power-up?

The device powers up to half-scale (binary 10000), providing a 50% duty cycle at the specified frequency.

How many devices can be addressed on a single 2-wire bus?

Eight different devices can be uniquely controlled using the three hardware address pins (A0, A1, A2).

What is the maximum duty cycle achievable via software commands?

While the 5-bit register sets duty cycles up to 96.88%, a specific 'Set PWM Duty Cycle 100%' command allows for a full-on state.