Renesas ISL88001IE29Z-T

Overview

ISL88001IE29Z-T from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with a fixed 2.92V reset threshold, ±1.2% accuracy, 160nA supply current, and 190ms power-on reset timeout. It monitors VDD in microcontroller systems and portable equipment, asserting a push-pull active-low reset signal when supply voltage drops below threshold or during power-up.

For engineers reviewing the ISL88001IE29Z-T datasheet, ISL88001IE29Z-T pinout, ISL88001IE29Z-T application, or ISL88001IE29Z-T equivalent, key selection considerations include its SC-70 package footprint, guaranteed reset assertion down to VDD = 1V, immunity to supply transients, and compatibility with battery-powered embedded designs requiring long-term stability and minimal quiescent current.

Technical Context

The ISL88001IE29Z-T implements a precision bandgap-based voltage reference and comparator circuit to monitor VDD against a factory-trimmed 2.92V trip point with 1% hysteresis. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it for 190ms to ensure stable power rail establishment before release.

This device operates over -40°C to +85°C, consumes only 160nA typical supply current at 1.8V–5.5V input, and delivers a push-pull RST output capable of sinking 10mA while maintaining VOL ≤ 0.4V and VOH ≥ VDD − 0.4V - enabling direct interface with most µP reset inputs without external pull-up components.

Key Specifications

Pinout & Package

ISL88001IE29Z-T is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, pkg drawing P3.049), measuring 2.2mm × 1.35mm × 0.95mm, optimized for space-constrained 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-T delivers superior accuracy (±1.2% vs. ±2.5%), 7× lower supply current (160nA vs. 1.2µA), and smaller SC-70 footprint - making it optimal for space- and power-constrained 3.3V systems where precision and longevity are critical.

Availability

ISL88001IE29Z-T is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical instrumentation, industrial control modules, and smart home hubs requiring stable component supply across extended production lifecycles.

Supply support for ISL88001IE29Z-T 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 ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, engineered specifically for battery-operated and space-constrained embedded systems needing precise, low-current power monitoring with guaranteed reset timing.

FAQ

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

The ISL88001IE29Z-T has a nominal reset threshold voltage of 2.92V, with guaranteed accuracy of ±1.2% over the -40°C to +85°C temperature range. At +25°C, the typical value is 2.925V, and the full min/max specification is 2.850V to 3.000V per datasheet FN6174 Rev 3.00.

Does the ISL88001IE29Z-T require external components to operate?

No, the ISL88001IE29Z-T requires no external components. Its push-pull RST output eliminates the need for a pull-up resistor, and its internal voltage reference and POR circuit are fully integrated. Only VDD, GND, and the reset-receiving device connection are necessary for basic operation.

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

The ISL88001IE29Z-T uses a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, drawing P3.049), with body dimensions of 2.2mm × 1.35mm × 0.95mm. This compact footprint is 40% smaller than standard SOT-23, supporting high-density PCB layouts in wearables and handheld devices.

How does the ISL88001IE29Z-T behave during power-up and brownout conditions?

The ISL88001IE29Z-T asserts its active-low RST output whenever VDD rises above 1V at power-up, holding it for 190ms (tPOR). During operation, it reasserts RST if VDD falls below 2.92V and maintains reset until VDD exceeds the threshold plus hysteresis (≈2.95V) for the full timeout period - preventing chatter during noisy brownouts.

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

Yes, all ISL88001 variants - including ISL88001IE29Z-T - share identical 3-pin SC-70 pinout (GND, RST, VDD) and push-pull active-low reset behavior. They are functionally interchangeable within the same package type; only the reset threshold voltage differs between part numbers.