Renesas ISL88003IE46Z-TK

Overview

ISL88003IE46Z-TK from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with a fixed 4.62V reset threshold, ±1.2% accuracy, 190ms power-on reset timeout, and push-pull active-high RST output. It monitors VDD supply voltage in microcontroller systems, portable equipment, and battery-powered devices where reliable brownout detection and minimal quiescent current (160nA) are critical.

For engineers reviewing the ISL88003IE46Z-TK datasheet, ISL88003IE46Z-TK pinout, ISL88003IE46Z-TK application, or ISL88003IE46Z-TK equivalent, this device delivers precise supply supervision for industrial-grade embedded systems requiring stable reset assertion down to VDD = 1V, low-temperature drift (0.48 mV/°C), and SC-70 package compatibility with space-constrained PCB layouts.

Technical Context

The ISL88003IE46Z-TK implements a factory-programmed voltage reference comparator with hysteresis to prevent noise-induced reset chatter during supply transients. Its internal POR circuit asserts reset at VDD = 1V and holds it until VDD exceeds 4.62V for ≥190ms, ensuring microprocessor initialization only after full supply stabilization.

This variant belongs to the ISL88003 family and features a push-pull RST output that drives HIGH (to VDD) when asserted - distinct from ISL88001 (push-pull active-low) and ISL88002 (open-drain active-low). It operates across -40°C to +85°C and consumes ≤300nA at 1.8V supply, enabling multi-year battery life in always-on monitoring applications.

Key Specifications

Pinout & Package

ISL88003IE46Z-TK is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, Renesas drawing P3.049), measuring 1.8 mm × 2.2 mm × 0.9 mm with gull-wing leads. The package supports both SnPb and Pb-free reflow profiles per IPC/JEDEC J-STD-020 MSL1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88003IE46Z-TK provides superior threshold accuracy (±1.2% vs ±2.5%), lower quiescent current (160nA vs ~1.2µA), and exact 4.62V match for 5V systems - making it optimal for high-reliability, long-life, and space-constrained designs where precision and zero-compromise timing are mandatory.

Availability

ISL88003IE46Z-TK is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical sensor monitoring, and industrial PLC I/O module supervision requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.

Supply support for ISL88003IE46Z-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 analog, mixed-signal, and embedded processing solutions for automotive, industrial, and IoT markets.

The ISL88003 belongs to Renesas' ultra-low-power voltage supervisor product line, engineered specifically for battery-operated and energy-sensitive applications demanding sub-200nA operation, factory-trimmed accuracy, and robust transient immunity.

FAQ

What is the reset output polarity and drive type of the ISL88003IE46Z-TK?

The ISL88003IE46Z-TK features an active-high push-pull RST output. When VDD falls below 4.62V or during initial power-up, the RST pin is driven HIGH to VDD. This eliminates the need for an external pull-up resistor and simplifies interface with microcontrollers expecting active-high reset signals. The output can source/sink up to 10mA, with VOL ≤ 0.4V and VOH ≥ VDD – 0.4V under load.

Does the ISL88003IE46Z-TK require any external components to operate?

No, the ISL88003IE46Z-TK requires no external components for basic operation. Its 4.62V threshold is factory-programmed, and the push-pull RST output needs no pull-up. A 0.1µF ceramic capacitor on VDD is recommended for local decoupling but not strictly required for functionality. No resistors, capacitors, or trimming elements are needed - enabling true 3-pin plug-and-play supervision.

What is the minimum supply voltage at which the ISL88003IE46Z-TK guarantees valid reset assertion?

The ISL88003IE46Z-TK guarantees valid reset assertion down to VDD = 1V. This means the RST output remains correctly driven (HIGH during reset condition) even as the monitored supply collapses toward 1V - a critical capability for detecting deep brownouts in Li-ion or alkaline battery systems where voltage decay extends below 2V. Below 1V, device operation is not specified.

How does the ISL88003IE46Z-TK differ from the ISL88001IE46Z-TK and ISL88002IE46Z-TK?

The ISL88003IE46Z-TK differs in reset output polarity and drive architecture: it delivers active-high push-pull RST, whereas ISL88001IE46Z-TK is active-low push-pull and ISL88002IE46Z-TK is active-low open-drain. All three share identical 4.62V threshold, 160nA current, and SC-70 package. Pinout is identical (GND-RST-VDD), but logic interpretation of RST state differs - requiring firmware or schematic adaptation when substituting.

Is the ISL88003IE46Z-TK compatible with lead-free reflow processes?

Yes, the ISL88003IE46Z-TK is Pb-free and RoHS compliant, using NiPdAu (e4) termination finish. It meets IPC/JEDEC J-STD-020 moisture sensitivity level (MSL) requirements for Pb-free reflow, with peak temperature tolerance up to 260°C. The device is qualified for both SnPb and Pb-free soldering processes without derating or special handling beyond standard MSL1 guidelines.