One-Time Programmable Industrial Sensor Output Driver

The MAX14832 is a 24V, 100mA driver for industrial binary sensors. The device is configurable through one-time programming (OTP) and integrates the common high-voltage circuitry needed for industrial binary sensors into a single-device solution. Integrated transient protection meets IEC60255-5 surges up to ±1.3kV.

The output of the device can be configured for high-side (pnp), low-side (npn), or push-pull operation through OTP. Additionally, the device features an OTP option for the internal low-dropout (LDO) regulator, allowing the user to select a 3.3V or 5V output, as well as an option to configure the device for sensors with normally open (NO) or normally closed (NC) logic. Also configurable during OTP is the timing of the power-on reset (POR) delay. OTP programming options are performed with the sensor interface pins (VCC, DO, and GND) using the 1-Wire® interface protocol.

The MAX14832 operates from a wide 4.75V to 34V supply and is available in a 10-pin TDFN-EP (3mm x 3mm) package and 9-bump wafer-level package (WLP) (1.6mm x 2.0mm). The device functions over the extended -40°C to +85°C temperature range.

Applications

* Capacitive and Inductive Sensors * Industrial Binary Sensors * Proximity Switches

* High Configurability

* OTP Configurable Through Sensor Interface Pins

* Programmable High-Side (pnp), Low-Side (npn), or Push-Pull Driver

* LDO with Selectable 3.3V or 5V Output Voltage

* Optional Pulse Stretching

* Programmable POR Delay

* Programmable NO/NC Logic

* Robust Design

* Reverse-Polarity Protection

* Hot-Plug Protection

* Short-Circuit Protection on DO

* Surge Protection

* ±1.3kV/500Ω IEC 60255-5

* ESD Protection

* ±12kV IEC61000-4-2 Air-Gap Discharge Method

* ±8kV IEC61000-4-2 Contact Discharge Method

* Glitch Filtering on Logic Input

* Accelerated Demagnetization of Inductive Load

* Overtemperature Protection

* Saves Space on Board

* 10-Pin TDFN-EP Package

* Ultra-Small (1.6mm x 2.0mm) 9-Bump WLP

* Dual, Integrated 4.5mA LED Drivers