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Renesas ISL88001IH26Z-T
- Part No.:
- ISL88001IH26Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH26Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,831
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Product details
Overview
ISL88001IH26Z-T 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 over -40°C to +85°C, and 160nA supply current - used for power-on reset and brownout detection in microcontroller-based portable systems.
For engineers reviewing the ISL88001IH26Z-T datasheet, ISL88001IH26Z-T pinout, ISL88001IH26Z-T application, or ISL88001IH26Z-T equivalent, key selection criteria include reset threshold tolerance, VDD operating range down to 1V, 190ms POR timeout, SC-70/SOT-23 package compatibility, and immunity to supply transients without external components.
Technical Context
The ISL88001IH26Z-T integrates a precision bandgap reference, comparator with hysteresis, and power-on reset timer to assert a clean active-low reset signal when VDD falls below 2.63V or during initial power-up. It operates continuously from VDD = 1V, ensuring reliable supervision even under deep brownout conditions.
Its push-pull RST output drives directly to GND (LOW) or VDD (HIGH) without requiring an external pull-up resistor, distinguishing it from open-drain variants like ISL88002. The device uses factory-trimmed threshold circuitry to achieve ±1.2% accuracy across temperature and supply variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±1.2% accuracy ensures precise brownout detection for 2.7V–2.8V rail monitoring. |
| Supply Current | 160nA typical at 1.8V enables multi-year battery life in always-on IoT sensors and wearables. |
| POR Timeout | 190ms minimum delay guarantees stable MCU initialization after power ramp-up. |
| Operating Voltage | Valid reset assertion down to VDD = 1V supports ultra-low-voltage operation and deep brownout recovery. |
| Output Type | Push-pull active-low RST eliminates need for external pull-up, simplifying PCB layout and reducing BOM count. |
| Package | 3-lead SOT-23 (P3.064), 2.92mm × 1.30mm footprint ideal for space-constrained portable designs. |
| Temperature Range | -40°C to +85°C industrial grade rating suitable for automotive cabin electronics and industrial controllers. |
Pinout & Package
ISL88001IH26Z-T is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), with 0.95mm lead pitch and 1.00mm body height. Pin 1 is GND, Pin 2 is RST (active-low push-pull), and Pin 3 is VDD (monitored supply input).
| 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) | Active-low reset output | Push-pull driver asserts LOW when VDD < 2.63V or during POR; sinks up to 10mA, no external pull-up required. |
| 3 (VDD) | Supply input & monitored rail | Single terminal serves as both power source and voltage sense point; valid operation from 1.8V to 5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.63V threshold | Factory-trimmed for ±1.2% accuracy - eliminates calibration overhead and supports direct replacement of legacy 2.6V supervisors. |
| 160nA supply current | Enables >10-year battery life in coin-cell-powered devices such as medical patches and remote sensors. |
| 190ms POR timeout | Guarantees sufficient delay for FPGA configuration load and oscillator stabilization before releasing reset. |
| VDD = 1V reset validity | Ensures deterministic reset assertion even during severe brownout, preventing MCU lockup or undefined state. |
| No external components | Reduces bill-of-materials cost and board area by eliminating RC timing networks or pull-up resistors. |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensors |
|---|---|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU in a handheld glucose meter powered by a single Li-ion cell. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and asserts active-low reset until voltage stabilizes above 2.63V for ≥190ms. Use Value: Prevents firmware execution during unstable power-up, avoiding corrupted EEPROM writes and sensor initialization errors. |
Use Scenario: Supervising 2.5V supply in a wearable ECG patch with CR2032 coin cell and low-power BLE SoC. IC Role / Device Role / Timing Role: Detects brownout when battery drops below 2.63V and holds SoC in reset until recharge or shutdown. Use Value: Eliminates erratic BLE transmission and false arrhythmia alerts caused by marginal supply voltage. |
| Industrial PLC I/O Modules | Smart Home Hub Controllers |
Use Scenario: Protecting field-programmable gate array (FPGA) configuration in a DIN-rail mounted I/O module exposed to 24V DC bus fluctuations. IC Role / Device Role / Timing Role: Provides POR and continuous voltage supervision on 2.7V auxiliary rail feeding FPGA configuration memory. Use Value: Guarantees FPGA reconfiguration only after stable power, preventing logic corruption due to undervoltage startup. |
Use Scenario: Monitoring 3.0V PMIC output in a voice-controlled smart speaker with always-on wake-word engine. IC Role / Device Role / Timing Role: Asserts reset if 3.0V rail dips below 2.63V during high-current Wi-Fi transmit bursts. Use Value: Avoids audio dropouts and firmware crashes by forcing controlled reboot instead of silent hang. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T-T | 2.63V threshold, ±1.5% accuracy, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits battery lifetime in energy-harvesting designs | Select when legacy MAX809 footprint compatibility is required and ultra-low IQ is not critical. |
| TPS3808G125DBVR | 2.63V threshold, ±0.5% accuracy, 1.1µA supply current, adjustable delay option, SOT-23-6 | Requires external capacitor for delay tuning and occupies larger PCB area | Choose when tighter threshold tolerance or programmable POR timeout is needed despite higher IQ. |
Compared with MAX809TRD2T-T and TPS3808G125DBVR, the ISL88001IH26Z-T delivers 7× lower supply current and eliminates external components while maintaining industrial-grade accuracy - making it optimal for long-life, space-constrained, and cost-sensitive embedded systems.
Availability
ISL88001IH26Z-T is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and battery-powered instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for ISL88001IH26Z-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 ISL88001IH26Z-T belongs to Renesas' ultra-low-power voltage supervisor family, designed specifically for reliable power monitoring in battery-operated and space-constrained embedded systems where minimal IQ and guaranteed reset behavior are critical.
FAQ
What is the exact reset threshold voltage of the ISL88001IH26Z-T?
The ISL88001IH26Z-T has a nominal reset threshold of 2.63V, with guaranteed accuracy of ±1.2% over the full -40°C to +85°C temperature range. At +25°C, the typical trip point is 2.630V, bounded between 2.598V (min) and 2.662V (max) per the datasheet's electrical specifications table.
Does the ISL88001IH26Z-T require an external pull-up resistor on the RST pin?
No, the ISL88001IH26Z-T features a push-pull active-low RST output that drives HIGH to VDD and LOW to GND internally. Unlike open-drain supervisors such as ISL88002, it requires no external pull-up resistor - reducing component count and simplifying layout.
Can the ISL88001IH26Z-T operate reliably when VDD drops below 1.8V?
Yes - the ISL88001IH26Z-T asserts a valid reset signal down to VDD = 1.0V, as confirmed in the datasheet's "Reset Signal Valid Down to VDD = 1V" feature and absolute maximum ratings. This enables robust brownout protection even during deep discharge of lithium batteries.
What is the power-on reset timeout duration for the ISL88001IH26Z-T?
The ISL88001IH26Z-T provides a minimum POR timeout of 140ms, typical 190ms, and maximum 260ms. The 190ms typical value ensures sufficient delay for microcontroller clock stabilization, register initialization, and peripheral readiness before releasing the reset signal.
Is the ISL88001IH26Z-T pin-compatible with other members of the ISL8800x family?
Yes - all ISL88001/88002/88003 variants share identical 3-lead SOT-23 pinout (GND-RST-VDD). The ISL88001IH26Z-T is functionally interchangeable with other ISL88001 variants (e.g., ISL88001IH31Z-T) in the same package, differing only in reset threshold voltage and marking code.
ISL88001IH26Z-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:
- Push-Pull, Totem Pole
- 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
ISL88001IH26Z-T FAQ
1.How can I place an order for ISL88001IH26Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH26Z-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 ISL88001IH26Z-T reliable?
The price and inventory of ISL88001IH26Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH26Z-T is usually 5 days.
3.What payment methods are accepted for ISL88001IH26Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH26Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH26Z-T?
ISL88001IH26Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH26Z-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 ISL88001IH26Z-T?
For technical support, including ISL88001IH26Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH26Z-T requirements.
6.How does Aetrix verify that ISL88001IH26Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88001IH26Z-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 ISL88001IH26Z-T meets industry standards.
7.What is the process for return or replacement of ISL88001IH26Z-T?
All ISL88001IH26Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH26Z-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 ISL88001IH26Z-T part is unused and in its original packaging.
Return procedure for ISL88001IH26Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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