Renesas ISL88001IE29Z-TK

Overview

ISL88001IE29Z-TK from Renesas is an ultra-low-power 3-lead voltage supervisor IC with a fixed 2.92V reset threshold, 160nA supply current, ±1.2% threshold accuracy, and 190ms power-on reset timeout. It features a push-pull active-low RST output and operates from VDD = 1V to 5.5V, serving as a system-level power monitor and reset generator in battery-powered microcontroller systems.

For engineers reviewing the ISL88001IE29Z-TK datasheet, ISL88001IE29Z-TK pinout, ISL88001IE29Z-TK application, or ISL88001IE29Z-TK equivalent, key selection criteria include its SC-70 package footprint, guaranteed reset assertion down to VDD = 1V, immunity to supply transients, and compatibility with 1.8–5.0V logic rails in space-constrained portable designs.

Technical Context

The ISL88001IE29Z-TK implements a precision bandgap-based voltage reference and comparator architecture to detect falling VDD below its factory-trimmed 2.92V threshold. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it for a guaranteed 140–260ms timeout, ensuring stable power-up sequencing before µP/µC release.

It uses hysteresis (1% typical) to prevent noise-induced reset chatter during brownout recovery and requires no external components-RST is internally driven as a push-pull output, eliminating need for pull-up resistors unlike open-drain variants (e.g., ISL88002).

Key Specifications

Pinout & Package

ISL88001IE29Z-TK is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, pkg drawing P3.049), measuring 2.0mm × 2.1mm × 0.9mm with 0.65mm lead pitch. This compact footprint enables placement adjacent to µP power pins on dense PCBs.

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 ISL88001IE29Z-TK delivers 22× lower supply current and 40% smaller footprint while maintaining identical 2.92V trip accuracy-making it optimal for long-life, space-constrained 3.0V system supervision.

Availability

ISL88001IE29Z-TK is available at Aetrix Electronics and suitable for microcontroller power-up sequencing, battery-powered IoT sensor nodes, and industrial controller watchdog interfaces requiring stable component supply across production lifecycles.

Supply support for ISL88001IE29Z-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 high-performance, low-power analog and mixed-signal solutions for industrial, automotive, and embedded markets.

The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, designed specifically for reliable power monitoring in portable, battery-operated, and energy-harvesting systems where nanoscale current draw and minimal board area are critical.

FAQ

What is the exact reset threshold voltage of the ISL88001IE29Z-TK?

The ISL88001IE29Z-TK has a factory-trimmed nominal reset threshold of 2.92V, with guaranteed accuracy of ±1.2% over -40°C to +85°C. At +25°C, the typical value is 2.925V, and the full range spans 2.850V to 3.000V per datasheet FN6174 Rev 3.00. This matches standard 3.0V supply rails and ensures robust brownout detection before functional failure occurs in the ISL88001IE29Z-TK's target systems.

Does the ISL88001IE29Z-TK require external components for basic operation?

No, the ISL88001IE29Z-TK requires no external components for fundamental voltage supervision and power-on reset functionality. Its push-pull RST output drives directly to GND or VDD, eliminating the need for pull-up resistors required by open-drain alternatives like ISL88002. Only proper decoupling (e.g., 0.1µF ceramic) on VDD is recommended per standard analog IC practice-no timing capacitors, dividers, or bias networks are needed for the ISL88001IE29Z-TK to operate as specified.

What package type and dimensions does the ISL88001IE29Z-TK use?

The ISL88001IE29Z-TK is packaged in a Pb-free 3-lead SC-70 (JEDEC MO-203AA) with package drawing P3.049. Its dimensions are 2.0mm × 2.1mm × 0.9mm, with 0.65mm lead pitch and 0.25–0.46mm foot length. This compact footprint occupies less than 2.5mm² of PCB area-significantly smaller than SOT-23-3-and is optimized for high-density layouts in portable and wearable electronics where the ISL88001IE29Z-TK is commonly deployed.

How does the ISL88001IE29Z-TK behave during deep brownout conditions?

The ISL88001IE29Z-TK guarantees reset assertion remains valid down to VDD = 1V, enabling reliable detection even during severe brownouts where other supervisors may lose functionality. When VDD falls below 2.92V, RST goes LOW within 15µs and stays asserted until VDD rises above threshold for ≥140ms. This behavior-combined with 1% hysteresis-prevents chattering near the trip point and ensures deterministic recovery in the ISL88001IE29Z-TK's industrial and medical applications.

Is the ISL88001IE29Z-TK pin-compatible with other members of the ISL8800x family?

Yes, the ISL88001IE29Z-TK shares identical 3-lead SC-70 pinout (GND–RST–VDD) and electrical interface with all ISL88001 variants (e.g., ISL88001IE31Z-TK), ISL88002, and ISL88003 in the same package. However, functional differences exist: ISL88001 offers push-pull RST, ISL88002 uses open-drain RST (requiring external pull-up), and ISL88003 provides push-pull active-high RST. Thus, while physically interchangeable, direct substitution requires verification of reset polarity and drive strength in the ISL88001IE29Z-TK's circuit context.