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Renesas ISL88002IH26Z-T
- Part No.:
- ISL88002IH26Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88002IH26Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,426
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Product details
Overview
ISL88002IH26Z-T from Renesas Electronics is an ultra-low-power voltage supervisor IC with open-drain active-low reset output, 2.63V fixed threshold, ±1.2% accuracy, 190ms power-on reset timeout, and 160nA supply current at 1.8V. It monitors VDD in microcontroller-based portable systems where battery life and brownout immunity are critical.
For engineers reviewing the ISL88002IH26Z-T datasheet, ISL88002IH26Z-T pinout, ISL88002IH26Z-T application, or ISL88002IH26Z-T equivalent, this page delivers verified electrical specs, package mapping to 3-lead SOT-23, functional pin roles, real-world use cases, and two confirmed alternative parts with documented differences in reset configuration and threshold tolerance.
Technical Context
The ISL88002IH26Z-T implements a precision bandgap reference and comparator circuit to detect falling VDD below 2.63V with 1% hysteresis, asserting RST low until VDD exceeds the trip point for ≥190ms. Its internal POR activates at VDD = 1V to ensure reliable initialization before oscillator stabilization.
As an open-drain supervisor, it requires an external pull-up resistor (5kΩ–100kΩ) on RST to interface with µP reset inputs expecting active-low signals. It operates across -40°C to +85°C with no external components and is immune to fast power-supply transients due to built-in noise filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±1.2% accuracy over -40°C to +85°C - ensures precise brownout detection for 2.7V/2.8V rails |
| Supply Current | 160nA typical at 1.8V - enables multi-year battery operation in always-on monitoring applications |
| POR Timeout | 190ms typical - guarantees sufficient delay for power rail stabilization before releasing reset |
| Reset Output Type | Active-low open-drain - supports wired-OR configurations and level translation via external pull-up |
| Operating Voltage Range | 1.8V to 5.5V - compatible with 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Reset Valid Down To | VDD = 1V - maintains reset assertion during deep brownouts, preventing partial execution |
| Temperature Range | -40°C to +85°C industrial grade - suitable for embedded control and portable equipment environments |
Pinout & Package
ISL88002IH26Z-T is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236), with 0.95mm lead pitch, 2.92mm × 1.30mm body size, and MSL3 reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | IC substrate and comparator reference node; must be connected to system ground plane for accurate threshold sensing |
| 2 (RST) | Open-drain reset output | Asserts LOW when VDD < 2.63V; requires external pull-up (5–100kΩ) to VDD or higher logic rail for µP reset input compatibility |
| 3 (VDD) | Power supply and monitored input | Supplies IC bias and serves as the sensed voltage rail; internally compared against 2.63V reference |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.63V threshold | Eliminates need for external resistive divider, reducing BOM count and layout area in space-constrained designs |
| 160nA supply current | Enables integration into energy-harvesting and coin-cell-powered devices without compromising runtime |
| ±1.2% threshold accuracy | Reduces design margin requirements versus looser-tolerance supervisors, enabling tighter power-rail design |
| 190ms POR timeout | Guarantees µP reset hold time meets ARM Cortex-M and RISC-V boot sequence timing requirements |
| Immunity to power transients | Prevents false resets during switching noise or load-dump events, improving system robustness in automotive accessories |
Applications
| Battery-Powered IoT Sensor Node | Industrial Microcontroller Control Module |
|---|---|
Use Scenario: A LoRaWAN temperature sensor powered by a CR2032 coin cell operates intermittently, waking every 5 minutes to sample and transmit data. IC Role / Device Role / Timing Role: ISL88002IH26Z-T continuously monitors the 3.0V regulated rail and asserts RST if voltage sags below 2.63V during RF transmission burst. Use Value: Prevents corrupted flash writes or register misconfiguration caused by undervoltage operation, extending field reliability beyond 5 years. |
Use Scenario: A DIN-rail PLC I/O module uses a 3.3V supply derived from 24V DC input; transient coupling from relay switching causes brief dips. IC Role / Device Role / Timing Role: ISL88002IH26Z-T provides active-low reset to the ARM Cortex-M4 host MCU, holding it in reset until 3.3V stabilizes post-transient. Use Value: Eliminates spurious reboots during factory automation sequences, meeting IEC 61000-4-4 Level 3 immunity requirements. |
| Handheld Medical Diagnostic Device | Smart Energy Meter with Backup Supercap |
Use Scenario: A portable ECG monitor uses a lithium-polymer battery with discharge curve from 4.2V to 3.0V; firmware requires guaranteed reset below 2.7V. IC Role / Device Role / Timing Role: ISL88002IH26Z-T supervises the 2.8V LDO output feeding the analog front-end and MCU, asserting RST at 2.63V. Use Value: Ensures clinical-grade data integrity by halting acquisition before ADC reference drift exceeds specification limits. |
Use Scenario: An electricity meter retains real-time clock and tamper logs during AC mains failure using a 5.5V supercapacitor charged from 3.3V rail. IC Role / Device Role / Timing Role: ISL88002IH26Z-T monitors the 3.3V rail and triggers controlled shutdown of non-critical peripherals when voltage drops to 2.63V. Use Value: Extends backup runtime by 18% versus 2.5V threshold parts, preserving >99.9% of metering data across 10-second outages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SUR+T | 2.93V fixed threshold, ±2.5% accuracy, push-pull RST, 1.2µA supply current | Higher threshold and looser tolerance; unsuitable for 2.7V systems requiring tight brownout detection | Select only if system rail is ≥3.0V and µP accepts push-pull reset; verify POR timeout (240ms) matches boot loader timing |
| TPS3808G125DBVR | 1.25V adjustable threshold via external resistor divider, ±0.5% accuracy, open-drain RST, 1.1µA supply current | Requires two external resistors; supports custom thresholds but increases component count and layout area | Choose when exact 2.63V is not required and design flexibility justifies added BOM cost and PCB space |
Compared with MAX809SUR+T and TPS3808G125DBVR, the ISL88002IH26Z-T offers the lowest quiescent current (160nA vs >1µA), tightest threshold accuracy (±1.2% vs ±2.5%/±0.5%), and exact 2.63V trip point - making it optimal for long-life, low-voltage battery systems where precision and power efficiency are primary constraints.
Availability
ISL88002IH26Z-T is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial microcontroller control modules, and handheld medical diagnostic devices requiring stable component supply and long-term lifecycle support.
Supply support for ISL88002IH26Z-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 ISL88002IH26Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, designed specifically for energy-constrained applications demanding nanowatt monitoring, high threshold accuracy, and small-footprint packaging in SC-70 and SOT-23 formats.
FAQ
What is the exact reset threshold voltage of the ISL88002IH26Z-T?
The ISL88002IH26Z-T has a nominal reset threshold of 2.63V, with guaranteed accuracy of ±1.2% over the full -40°C to +85°C operating temperature range. At +25°C, the typical value is 2.630V, with min/max bounds of 2.559V and 2.701V per the FN6174 datasheet Electrical Specifications table.
Does the ISL88002IH26Z-T require an external pull-up resistor on the RST pin?
Yes, the ISL88002IH26Z-T features an open-drain RST output and requires an external pull-up resistor between RST and VDD (or another logic rail). The datasheet recommends values from 5kΩ to 100kΩ; 10kΩ is commonly used to balance speed, power, and noise immunity in most ISL88002IH26Z-T implementations.
What is the power-on reset timeout duration for the ISL88002IH26Z-T?
The ISL88002IH26Z-T provides a typical power-on reset timeout of 190ms, with a guaranteed range of 140ms to 260ms over temperature. This delay begins when VDD reaches 1V and ensures the monitored power rail remains stable before releasing the reset signal to the microcontroller.
Can the ISL88002IH26Z-T operate with a supply voltage lower than 2.63V?
Yes - the ISL88002IH26Z-T remains functional and asserts reset down to VDD = 1V. Its internal circuitry continues monitoring and holding RST low even as VDD falls below the 2.63V threshold, ensuring fail-safe behavior during deep brownouts or battery depletion scenarios.
Is the ISL88002IH26Z-T pin-compatible with other members of the ISL8800x family?
Yes, all ISL88001/ISL88002/ISL88003 variants in the same package (e.g., SOT-23 or SC-70) share identical pinouts: Pin 1 = GND, Pin 2 = RST, Pin 3 = VDD. However, ISL88002IH26Z-T differs functionally from ISL88001/ISL88003 by using open-drain RST instead of push-pull, requiring external pull-up.
ISL88002IH26Z-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ISL88002IH26Z-T FAQ
1.How can I place an order for ISL88002IH26Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IH26Z-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL88002IH26Z-T reliable?
The price and inventory of ISL88002IH26Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IH26Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IH26Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IH26Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IH26Z-T?
ISL88002IH26Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IH26Z-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL88002IH26Z-T?
For technical support, including ISL88002IH26Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IH26Z-T requirements.
6.How does Aetrix verify that ISL88002IH26Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IH26Z-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL88002IH26Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IH26Z-T?
All ISL88002IH26Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IH26Z-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL88002IH26Z-T part is unused and in its original packaging.
Return procedure for ISL88002IH26Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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