Renesas ISL88001IE26Z-TK

Overview

ISL88001IE26Z-TK from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with push-pull active-low reset output, 2.63V fixed threshold, ±1.2% accuracy, 160nA supply current, and 190ms power-on reset timeout. It monitors VDD in microcontroller systems to ensure reliable boot-up and brownout protection.

For engineers reviewing the ISL88001IE26Z-TK datasheet, ISL88001IE26Z-TK pinout, ISL88001IE26Z-TK application, or ISL88001IE26Z-TK equivalent, key selection criteria include reset polarity (active-low), output drive type (push-pull), minimum operating voltage (1V), hysteresis-enabled noise immunity, and SC-70 package compatibility for space-constrained portable designs.

Technical Context

The ISL88001IE26Z-TK implements a precision bandgap-based voltage reference comparator with internal hysteresis to prevent reset chatter during supply transients. Its POR circuit asserts reset at VDD = 1V and holds it until VDD exceeds 2.63V for ≥190ms.

It operates as a single-supply, single-threshold monitor with no external components required. The push-pull RST output drives low (≤0.4V @ 0.5mA) during reset and high (VDD–0.4V) otherwise, eliminating need for external pull-up resistors.

Key Specifications

Pinout & Package

ISL88001IE26Z-TK is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, Renesas pkg drawing P3.049), optimized for automated placement and reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G18DBVR, the ISL88001IE26Z-TK delivers 10× lower supply current and SC-70 size advantage for wearables and miniaturized medical devices, while maintaining identical 2.63V trip point and push-pull simplicity.

Availability

ISL88001IE26Z-TK is available at Aetrix Electronics and suitable for microcontroller power sequencing, battery-powered sensor nodes, industrial PLC modules, handheld medical diagnostics, and portable instrumentation requiring stable component supply and long-term lifecycle support.

Supply support for ISL88001IE26Z-TK 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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.

The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, designed specifically for energy-sensitive applications where minimal quiescent current, precise threshold accuracy, and small-footprint packaging are essential.

FAQ

What is the reset output configuration of the ISL88001IE26Z-TK?

The ISL88001IE26Z-TK features an active-low push-pull RST output. During reset assertion (when VDD falls below 2.63V), the RST pin is driven low to ≤0.4V. When released, it actively drives high to VDD–0.4V. This eliminates the need for an external pull-up resistor, simplifying design and improving noise immunity compared to open-drain alternatives like the ISL88002IE26Z-TK.

Does the ISL88001IE26Z-TK require any external components to operate?

No, the ISL88001IE26Z-TK operates autonomously with no external components required. Its integrated voltage reference, comparator, POR timer, and push-pull output enable full functionality using only the three connections: VDD, GND, and RST. This reduces BOM cost, PCB area, and design validation effort-unlike open-drain supervisors that mandate external pull-up resistors.

What is the minimum supply voltage at which the ISL88001IE26Z-TK remains functional?

The ISL88001IE26Z-TK guarantees valid reset signaling down to VDD = 1V. Its POR circuit activates at exactly 1V, and the reset output remains asserted until VDD rises above 2.63V and sustains that level for ≥190ms. This capability supports use with deeply discharged batteries or low-voltage rails where other supervisors fail to assert reset reliably.

How accurate is the 2.63V threshold of the ISL88001IE26Z-TK over temperature?

The ISL88001IE26Z-TK maintains ±1.2% threshold accuracy across its full operating temperature range of –40°C to +85°C. At +25°C, the typical VTHVDD is 2.630V with min/max of 2.598V/2.662V. Over temperature, drift is characterized at 0.48mV/°C, ensuring predictable performance in automotive and industrial environments without calibration.

Is the ISL88001IE26Z-TK pin-compatible with industry-standard voltage supervisors?

Yes, the ISL88001IE26Z-TK is pin-compatible with MAX803, MAX809, and MAX810 in the same SC-70 or SOT-23 packages. Its pin 1 (GND), pin 2 (RST), and pin 3 (VDD) match the standard 3-lead supervisor pinout. However, note that MAX809 variants often use SOT-23; SC-70 variants like ISL88001IE26Z-TK require matching footprint verification for drop-in replacement.