Renesas ISL88002IE23Z-T7A

Overview

ISL88002IE23Z-T7A from Renesas Electronics is an ultra-low-power (160nA) open-drain voltage supervisor IC in a 3-lead SC-70 package, with a fixed 2.32V reset threshold, ±1.2% accuracy, and 190ms power-on reset timeout. It monitors VDD supply voltage and asserts an active-low reset signal to microcontrollers during brownout or startup, supporting portable/battery-powered systems requiring high reliability and minimal quiescent current.

For engineers reviewing the ISL88002IE23Z-T7A datasheet, ISL88002IE23Z-T7A pinout, ISL88002IE23Z-T7A application, or ISL88002IE23Z-T7A equivalent, key selection criteria include its open-drain RST output configuration, 2.32V trip point, SC-70 package footprint, guaranteed operation down to VDD = 1V, and compatibility with low-voltage microcontroller reset inputs requiring external pull-up.

Technical Context

The ISL88002IE23Z-T7A implements a precision bandgap-based voltage reference comparator with internal hysteresis (1%) to prevent noise-induced reset chatter. Its POR circuit activates at VDD = 1V and holds RST asserted until VDD exceeds 2.32V for ≥190ms, ensuring stable power rail establishment before system release.

As an open-drain output device, ISL88002IE23Z-T7A requires an external pull-up resistor (5kΩ–100kΩ) on the RST line to interface with standard logic inputs. It operates across -40°C to +85°C and draws only 160nA typical supply current at 1.8V, enabling multi-year battery life in always-on monitoring applications.

Key Specifications

Pinout & Package

ISL88002IE23Z-T7A is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, pkg drawing P3.049), measuring 2.20mm × 1.35mm × 0.95mm, optimized for space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Compared with MAX809SEUR+T and TPS3801K23DBVR, ISL88002IE23Z-T7A delivers superior energy efficiency (160nA vs >1µA) and adequate accuracy (±1.2%) for cost-sensitive portable designs, while its open-drain RST supports shared reset buses and level-shifting flexibility not available in push-pull alternatives.

Availability

ISL88002IE23Z-T7A is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and wearable fitness trackers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ISL88002IE23Z-T7A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader delivering high-performance analog, mixed-signal, and embedded processing solutions for automotive, industrial, and IoT markets.

The ISL88002IE23Z-T7A belongs to Renesas' Ultra Low Power Voltage Supervisor family, engineered specifically for battery-critical applications where nanoscale current draw, small footprint, and precise reset thresholds ensure system reliability without compromising energy budget.

FAQ

What is the reset threshold voltage of the ISL88002IE23Z-T7A?

The ISL88002IE23Z-T7A has a nominal reset threshold voltage of 2.32V, with guaranteed accuracy of ±1.2% over the -40°C to +85°C temperature range. This value is factory-trimmed and applies to the VDD pin, which serves both as power supply and monitored input. The device asserts an active-low reset signal when VDD falls below this threshold and releases it after VDD exceeds 2.32V for ≥190ms.

Does the ISL88002IE23Z-T7A require an external pull-up resistor on the RST pin?

Yes, the ISL88002IE23Z-T7A features an open-drain RST output and requires an external pull-up resistor between the RST pin and the target logic supply voltage. Renesas specifies a recommended range of 5kΩ to 100kΩ. The exact value depends on bus capacitance and rise-time requirements; lower values improve speed but increase static current, while higher values reduce current but slow edge transitions.

Can the ISL88002IE23Z-T7A operate with a supply voltage below 2.32V?

Yes, the ISL88002IE23Z-T7A remains functional and asserts a valid reset signal down to VDD = 1V. Its internal POR circuit activates at 1V, and the reset output remains asserted as long as VDD stays below 2.32V. This capability ensures deterministic behavior during deep brownout conditions where the monitored rail collapses well below its nominal value.

What package type and dimensions does the ISL88002IE23Z-T7A use?

The ISL88002IE23Z-T7A uses a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, Renesas pkg drawing P3.049), with dimensions of 2.20mm × 1.35mm × 0.95mm. It is compatible with standard SC-70 reflow profiles and offers a smaller footprint than SOT-23-3, making it ideal for space-constrained PCBs in portable electronics.

How does the ISL88002IE23Z-T7A differ from the ISL88001IE23Z-T7A and ISL88003IE23Z-T7A?

The ISL88002IE23Z-T7A differs from ISL88001IE23Z-T7A and ISL88003IE23Z-T7A solely in its RST output configuration: ISL88002IE23Z-T7A uses open-drain, ISL88001IE23Z-T7A uses push-pull active-low, and ISL88003IE23Z-T7A uses push-pull active-high. All three share identical 2.32V threshold, ±1.2% accuracy, 160nA supply current, SC-70 package, and 190ms POR timeout.