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Renesas ISL88002IH31Z-TK
- Part No.:
- ISL88002IH31Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88002IH31Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,360
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Product details
Overview
ISL88002IH31Z-TK from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with open-drain active-low reset output, 3.07V fixed threshold, ±1.2% accuracy, and 190ms power-on reset timeout-designed for brownout detection in battery-powered microcontroller systems.
For engineers reviewing the ISL88002IH31Z-TK datasheet, ISL88002IH31Z-TK pinout, ISL88002IH31Z-TK application, or ISL88002IH31Z-TK equivalent, this device delivers precise supply monitoring down to 1V VDD, consumes only 160nA quiescent current, and supports industrial temperature range (–40°C to +85°C) in a compact 3-lead SOT-23 package.
Technical Context
The ISL88002IH31Z-TK integrates a precision voltage reference, comparator with hysteresis, and power-on reset timer into a single die. It continuously monitors VDD against a factory-trimmed 3.07V trip point and asserts RST low when VDD falls below threshold or during initial power-up until VDD stabilizes above 3.07V for ≥190ms.
Its open-drain RST output requires an external pull-up resistor (5kΩ–100kΩ), enabling wired-OR configuration and compatibility with multiple logic families. The device operates from 1.8V to 5.5V supply and maintains reset validity down to VDD = 1V, ensuring reliable initialization even under deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V ±1.2% - precisely monitors 3.3V rails with minimal tolerance drift over temperature. |
| Supply Current | 160nA typical - enables multi-year operation on coin-cell batteries without compromising supervision integrity. |
| POR Timeout | 190ms nominal - ensures sufficient delay for 3.3V supply stabilization and microcontroller core/oscillator readiness. |
| Reset Validity | Down to VDD = 1V - guarantees reset assertion during severe undervoltage events before system collapse. |
| Output Type | Active-low open-drain - supports flexible logic-level translation and multi-device reset bus sharing. |
| Operating Temp | –40°C to +85°C - qualified for industrial and portable equipment environments without derating. |
| Package | 3-lead SOT-23 (P3.064) - footprint-compatible with legacy supervisory ICs and optimized for high-density PCB layouts. |
Pinout & Package
ISL88002IH31Z-TK is housed in a Pb-free 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), measuring 2.92mm × 1.30mm × 1.00mm with 0.95mm lead pitch. The package supports standard SnPb and Pb-free reflow profiles (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal circuitry and reset comparator; must be connected to system ground plane for stable operation. |
| 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 source; supplies internal circuitry and serves as the input to the voltage threshold comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.07V threshold | Accurately supervises 3.3V systems without external resistors or calibration overhead. |
| 160nA supply current | Reduces standby power by >90% versus legacy supervisors, extending battery life in always-on devices. |
| 190ms POR timeout | Guarantees microcontroller reset hold time exceeds typical 3.3V LDO startup and clock stabilization delays. |
| Reset valid to 1V VDD | Prevents spurious release during deep brownouts where VDD collapses below 2V but remains >1V. |
| Immunity to transients | Internal hysteresis and filtering reject fast supply glitches that could falsely trigger reset release. |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU after Li-ion battery voltage recovers from discharge-induced sag. IC Role / Device Role / Timing Role: Voltage supervisor providing active-low reset signal synchronized to 3.3V rail recovery, with 190ms hold time matching MCU internal regulator lock time. Use Value: Prevents firmware execution at marginal VDD, eliminating undefined behavior and flash corruption during partial power restoration. |
Use Scenario: Maintaining deterministic reset state in a Bluetooth LE pulse oximeter powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Ultra-low-quiescent supervisor asserting RST until VDD ≥3.07V and stable for ≥190ms, enabling reliable sensor initialization. Use Value: Achieves >5-year shelf life with <200nA average current draw while guaranteeing full reset assertion across battery aging and temperature extremes. |
| Industrial PLC I/O Module | Smart Energy Meter MCU Subsystem |
|
Use Scenario: Detecting AC/DC converter output droop during line sags in DIN-rail mounted control modules. IC Role / Device Role / Timing Role: Open-drain reset supervisor interfaced to FPGA reset controller, allowing shared reset bus with other peripherals. Use Value: Enables coordinated system-wide reset via wired-OR topology without level-shifting components or additional drivers. |
Use Scenario: Supervising auxiliary 3.3V supply powering metrology ADC and real-time clock in ANSI C12.22-compliant meters. IC Role / Device Role / Timing Role: Precision 3.07V monitor with ±1.2% accuracy ensuring reset assertion before ADC reference voltage drops below spec. Use Value: Eliminates measurement errors caused by out-of-spec supply during transient grid events, meeting Class 0.2 accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | 3.08V threshold, ±2.5% accuracy, 140ms POR, SOT-23-3 package | Higher threshold tolerance and shorter timeout reduce margin for slow-rising 3.3V rails | Acceptable where tighter cost control outweighs need for 190ms hold time and ±1.2% accuracy |
| TPS3808G30DBVR | 3.0V threshold, ±0.5% accuracy, 200ms POR, 1.6µA supply current, SOT-23-6 | Higher quiescent current and 6-pin package increase board area and reduce battery life | Preferred only when sub-1% threshold accuracy is mandatory and power budget allows >10× higher IDD |
Compared with MAX809TRD2+T and TPS3808G30DBVR, the ISL88002IH31Z-TK uniquely balances ultra-low 160nA current, tight ±1.2% threshold accuracy, and 190ms POR timeout in a 3-pin SOT-23-making it optimal for space-constrained, long-life battery applications where both precision and efficiency are critical.
Availability
ISL88002IH31Z-TK is available at Aetrix Electronics and suitable for microcontroller-based portable instrumentation, industrial sensor nodes, and smart energy metering systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL88002IH31Z-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 ISL8800x family was designed specifically for ultra-low-power voltage supervision in battery-critical applications-emphasizing nanoscale quiescent current, factory-trimmed accuracy, and robust reset timing across industrial temperature ranges.
FAQ
What is the exact reset threshold voltage of the ISL88002IH31Z-TK?
The ISL88002IH31Z-TK has a nominal reset threshold of 3.07V, with guaranteed accuracy of ±1.2% over the –40°C to +85°C operating temperature range. At +25°C, the typical value is 3.075V, and the full min/max range is 3.000V to 3.150V per the FN6174 datasheet.
Does the ISL88002IH31Z-TK require an external pull-up resistor on the RST pin?
Yes, the ISL88002IH31Z-TK features an open-drain RST output and requires an external pull-up resistor between RST and the target logic rail (typically VDD). The recommended value is 5kΩ to 100kΩ, balancing speed, power, and noise immunity per the datasheet's Figure 1 and Pin Descriptions section.
Can the ISL88002IH31Z-TK operate reliably when VDD drops below 2.0V?
Yes-the ISL88002IH31Z-TK guarantees valid reset assertion down to VDD = 1.0V. Its internal circuitry remains functional and the RST output stays asserted (low) as long as VDD remains below 3.07V, even during deep brownout conditions well below 2.0V.
What is the power-on reset timeout duration for the ISL88002IH31Z-TK?
The ISL88002IH31Z-TK provides a nominal power-on reset timeout of 190ms, with a specified range of 140ms to 260ms over temperature. This delay ensures the 3.3V supply and connected microcontroller have fully stabilized before releasing reset.
Is the ISL88002IH31Z-TK pin-compatible with the MAX809 series?
No-the ISL88002IH31Z-TK is not pin-compatible with the MAX809 series. While both are 3-pin SOT-23 voltage supervisors, the ISL88002IH31Z-TK uses Pin 1 = GND, Pin 2 = RST, Pin 3 = VDD, whereas MAX809 variants use Pin 1 = VDD, Pin 2 = GND, Pin 3 = RST. Board layout changes are required for substitution.
ISL88002IH31Z-TK 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:
- 3.075V
- 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
ISL88002IH31Z-TK FAQ
1.How can I place an order for ISL88002IH31Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IH31Z-TK 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 ISL88002IH31Z-TK reliable?
The price and inventory of ISL88002IH31Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IH31Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88002IH31Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IH31Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IH31Z-TK?
ISL88002IH31Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IH31Z-TK 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 ISL88002IH31Z-TK?
For technical support, including ISL88002IH31Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IH31Z-TK requirements.
6.How does Aetrix verify that ISL88002IH31Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88002IH31Z-TK 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 ISL88002IH31Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88002IH31Z-TK?
All ISL88002IH31Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IH31Z-TK, 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 ISL88002IH31Z-TK part is unused and in its original packaging.
Return procedure for ISL88002IH31Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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