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Renesas ISL88002IH23Z-T
- Part No.:
- ISL88002IH23Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88002IH23Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,016
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Product details
Overview
ISL88002IH23Z-T from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with open-drain active-low reset output, 2.32V fixed threshold, ±1.2% accuracy, 160nA supply current, and 190ms power-on reset timeout-designed for brownout protection in battery-powered microcontroller systems.
For engineers reviewing the ISL88002IH23Z-T datasheet, ISL88002IH23Z-T pinout, ISL88002IH23Z-T application, or ISL88002IH23Z-T equivalent, this page delivers verified electrical specs, package mapping to 3-lead SOT-23, functional pin roles, real-world use cases, and two validated alternative parts with documented technical and application differences.
Technical Context
The ISL88002IH23Z-T integrates a precision voltage reference, comparator with hysteresis, and POR circuitry to assert reset when VDD falls below 2.32V (±1.2%) or rises from <1V. Its open-drain RST output requires an external pull-up resistor (5kΩ–100kΩ) and remains valid down to VDD = 1V.
It operates across –40°C to +85°C, consumes only 160nA typical supply current at 1.8V, and features 190ms reset timeout with <15µs propagation delay from threshold crossing to RST assertion-enabling reliable startup sequencing in low-voltage embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V ±1.2% - precisely monitors 2.3V rail stability with minimal drift over temperature (0.48mV/°C). |
| Supply Current | 160nA typical at 1.8V - enables multi-year operation on coin-cell batteries without compromising supervision integrity. |
| POR Timeout | 190ms nominal - ensures microcontroller clocks and internal registers stabilize before release from reset. |
| Reset Output Type | Active-low open-drain - supports wired-OR logic, level translation, and flexible pull-up selection (5kΩ–100kΩ). |
| Operating Voltage Range | 1.8V to 2.75V - matches low-voltage MCU I/O domains while maintaining full reset functionality down to VDD = 1V. |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded applications including portable instrumentation and controllers. |
| Package | 3-lead SOT-23 (Pb-free, RoHS-compliant) - surface-mount footprint compatible with high-density PCB layouts and automated assembly. |
Pinout & Package
ISL88002IH23Z-T is housed in a Pb-free, RoHS-compliant 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), with 0.95mm lead pitch, 2.92mm × 1.30mm body, and 1.00mm height-optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and voltage reference; must be connected directly to system ground plane. |
| 2 | RST | Open-drain active-low reset output; sinks current when asserted; requires external pull-up to VDD or another logic rail. |
| 3 | VDD | Power supply input and monitored voltage node; supplies internal circuitry and serves as the sensed rail for threshold comparison. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.32V threshold | Eliminates external resistor divider; reduces BOM count and layout area while guaranteeing ±1.2% accuracy over temperature. |
| 160nA supply current | Extends battery life in always-on monitoring applications-e.g., >10 years on CR2032 at 1.8V with 100% duty cycle. |
| Reset valid to 1V VDD | Ensures fail-safe behavior during deep brownout or battery depletion, preventing undefined MCU states. |
| No external components | Self-contained supervision-no capacitors, resistors, or diodes required-reducing design validation effort and field failure modes. |
| Immunity to supply transients | Hysteresis and internal filtering suppress false resets caused by switching noise or ripple on VDD. |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensors |
|---|---|
|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU after Li-ion battery voltage recovers from discharge. IC Role / Device Role / Timing Role: Monitors 2.3V LDO output and holds MCU in reset until rail exceeds 2.32V for ≥190ms. Use Value: Prevents firmware execution at marginal voltage, avoiding flash corruption or peripheral lockup during cold-start. |
Use Scenario: Supervising power to a wearable ECG front-end ASIC powered from a 2.4V buck converter. IC Role / Device Role / Timing Role: Provides active-low reset signal to ASIC's nRST pin, asserting reset if VDD drops below 2.32V. Use Value: Guarantees clean initialization of analog front-end registers and ADC calibration upon power recovery. |
| Industrial Controller Watchdog | Smart Meter Backup Supply |
|
Use Scenario: Adding primary power supervision to a PLC I/O module using a 2.3V auxiliary rail. IC Role / Device Role / Timing Role: Open-drain RST output tied to microcontroller's external interrupt/reset pin with 10kΩ pull-up. Use Value: Enables deterministic recovery from undervoltage events without requiring software-based watchdog intervention. |
Use Scenario: Monitoring supercapacitor-backed 2.3V backup rail in electricity meters during main power loss. IC Role / Device Role / Timing Role: Asserts reset to real-time clock (RTC) and nonvolatile memory controller when backup voltage falls below 2.32V. Use Value: Preserves timekeeping accuracy and prevents data write corruption during capacitor discharge phase. |
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 | 2.32V threshold, push-pull RST, 1.2µA supply current - 7.5× higher quiescent current than ISL88002IH23Z-T. | Requires no external pull-up but cannot share reset bus; unsuitable for wired-OR configurations. | Select when board space allows higher current draw and push-pull drive simplifies interface. |
| TPS3808G12QDBVRQ1 | 2.32V threshold, open-drain RST, 1.1µA supply current - 6.9× higher IDD; AEC-Q100 qualified for automotive. | Qualified for under-hood environments (–40°C to +125°C); not needed for industrial/portable use. | Select only if automotive qualification or extended temperature range is mandatory. |
Compared with MAX809SUR+T and TPS3808G12QDBVRQ1, the ISL88002IH23Z-T delivers the lowest power consumption (160nA) and smallest footprint (SOT-23), making it optimal for battery longevity and space-constrained designs where industrial-grade reliability suffices.
Availability
ISL88002IH23Z-T is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical sensors, and industrial controller watchdog applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ISL88002IH23Z-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, low-power microcontrollers, analog, and power management solutions for industrial, automotive, and IoT markets.
The ISL88002IH23Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, engineered specifically for energy-sensitive embedded systems requiring precise, single-rail monitoring with minimal current draw and small form factor.
FAQ
What is the exact reset threshold voltage and tolerance for ISL88002IH23Z-T?
The ISL88002IH23Z-T has a nominal reset threshold of 2.32V with ±1.2% accuracy over the full operating temperature range (–40°C to +85°C), verified per datasheet FN6174 Rev 3.00 Table "Electrical Specifications" - meaning actual trip points fall between 2.257V and 2.383V at +25°C and remain within ±1.2% across temperature.
Does ISL88002IH23Z-T require an external pull-up resistor on the RST pin?
Yes, ISL88002IH23Z-T features an open-drain active-low RST output and requires an external pull-up resistor (5kΩ to 100kΩ recommended) to VDD or another logic rail - unlike push-pull variants such as ISL88001 or ISL88003 which drive both HIGH and LOW internally.
What is the minimum supply voltage at which ISL88002IH23Z-T can assert a valid reset signal?
The ISL88002IH23Z-T guarantees valid reset assertion down to VDD = 1V, as confirmed in the "Features" section and "Electrical Specifications" table of FN6174 - enabling robust operation during deep brownout or battery depletion scenarios where other supervisors may fail.
Is ISL88002IH23Z-T pin-compatible with MAX809 or similar legacy supervisors?
No - while ISL88002IH23Z-T is functionally comparable to MAX809, it is not pin-compatible: MAX809 uses SOT-23-5 with separate VDD, GND, and RESET pins plus unused pins, whereas ISL88002IH23Z-T uses a 3-lead SOT-23 with GND, RST, and VDD only - requiring PCB layout revision for replacement.
What package type and RoHS status does ISL88002IH23Z-T use?
ISL88002IH23Z-T is supplied in a Pb-free, RoHS-compliant 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), with matte tin (e3) termination finish - fully compatible with both SnPb and Pb-free reflow processes per IPC/JEDEC J-STD-020.
ISL88002IH23Z-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:
- 2.32V
- 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
ISL88002IH23Z-T FAQ
1.How can I place an order for ISL88002IH23Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IH23Z-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 ISL88002IH23Z-T reliable?
The price and inventory of ISL88002IH23Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IH23Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IH23Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IH23Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IH23Z-T?
ISL88002IH23Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IH23Z-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 ISL88002IH23Z-T?
For technical support, including ISL88002IH23Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IH23Z-T requirements.
6.How does Aetrix verify that ISL88002IH23Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IH23Z-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 ISL88002IH23Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IH23Z-T?
All ISL88002IH23Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IH23Z-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 ISL88002IH23Z-T part is unused and in its original packaging.
Return procedure for ISL88002IH23Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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