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Renesas ISL88002IE31Z-T
- Part No.:
- ISL88002IE31Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE31Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,838
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Product details
Overview
ISL88002IE31Z-T 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 160nA supply current. It monitors VDD in microcontroller systems and portable equipment, asserting reset when supply drops below threshold or during power-up until VDD stabilizes for 190ms.
For engineers reviewing the ISL88002IE31Z-T datasheet, ISL88002IE31Z-T pinout, ISL88002IE31Z-T application, or ISL88002IE31Z-T equivalent, key selection criteria include reset output type (open-drain), trip point tolerance, minimum operating voltage (1V), package footprint (SC-70), and compatibility with battery-powered or space-constrained designs.
Technical Context
The ISL88002IE31Z-T implements a precision bandgap-based voltage reference comparator with built-in hysteresis to prevent noise-induced reset chatter. Its internal POR circuit asserts reset at VDD = 1V and holds it for a guaranteed 140–260ms timeout after VDD exceeds the 3.07V threshold.
As an open-drain RST device, ISL88002IE31Z-T requires an external pull-up resistor (5kΩ–100kΩ) to define the high state. It operates across -40°C to +85°C with thermal resistance θJA = 640°C/W in the SC-70 package and draws only 160nA at 1.8V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V nominal, ±1.2% accuracy ensures reliable detection of 3.3V rail brownouts. |
| Supply Current | 160nA typical at 1.8V - enables multi-year operation on coin-cell batteries. |
| POR Timeout | 190ms typical - guarantees sufficient stabilization time for µC/FPGA initialization. |
| Reset Output Type | Active-low open-drain - supports wired-OR configurations and flexible logic-level translation. |
| Operating Voltage Range | 1.8V to 5.5V supply, with reset valid down to VDD = 1V - supports deep brownout detection. |
| Package | 3-lead SC-70 (P3.049), 1.8 × 2.2 mm footprint - saves PCB area vs. SOT-23. |
| Temperature Range | -40°C to +85°C industrial grade - suitable for embedded and portable environments. |
Pinout & Package
ISL88002IE31Z-T is housed in a Pb-free 3-lead SC-70 plastic package (JEDEC MO-203AA, Renesas drawing P3.049), measuring 1.8 mm × 2.2 mm × 0.95 mm with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset driver - must be low-impedance connection. |
| 2 | RST | Active-low open-drain reset output - requires external pull-up; sinks ≤0.5mA at VOL ≤0.4V. |
| 3 | VDD | Power supply input and monitored voltage node - supplies IC and serves as threshold reference. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 160nA enables >10-year battery life in always-on monitoring applications. |
| ±1.2% threshold accuracy | Reduces design margin requirements and eliminates need for external calibration. |
| 1V minimum reset validity | Ensures system remains held in reset even during severe brownout conditions. |
| No external components required | Integrated POR, hysteresis, and reference eliminate capacitors, resistors, or trimming. |
| SC-70 footprint | 1.8 × 2.2 mm size reduces board area by ~30% vs. standard SOT-23 packages. |
Applications
| Microprocessor Power-Up Sequencing | Battery-Powered IoT Sensor Node |
|---|---|
Use Scenario: Ensuring clean boot of ARM Cortex-M0+ MCU after Li-ion battery wake-up from deep sleep. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and asserts open-drain reset until rail stabilizes for ≥190ms post-wake. Use Value: Prevents firmware crash due to premature clock enable or register access before power integrity is achieved. | Use Scenario: Supervising supply to BLE SoC and environmental sensor in coin-cell-powered asset tracker. IC Role / Device Role / Timing Role: Detects 3.07V threshold crossing during cold-start and maintains reset until VDD > 3.07V + hysteresis for full POR duration. Use Value: Eliminates erratic behavior during marginal battery voltage transitions without adding passive BOM cost. |
| Industrial Controller Watchdog Interface | Portable Medical Diagnostic Device |
Use Scenario: Providing hardware reset signal to FPGA-based motion controller during AC/DC converter startup. IC Role / Device Role / Timing Role: Acts as POR generator and brownout detector on 3.3V auxiliary rail, interfacing via open-drain to FPGA's global reset net. Use Value: Guarantees deterministic FPGA configuration load and prevents metastability in safety-critical I/O initialization. | Use Scenario: Monitoring regulated 3.3V supply in handheld ECG analyzer powered by rechargeable Li-Poly battery. IC Role / Device Role / Timing Role: Holds microcontroller in reset during battery undervoltage events below 3.07V, with reset release only after stable POR timeout. Use Value: Avoids corrupted ADC sampling or false arrhythmia alerts caused by supply droop during high-current LED flash pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | 3.08V threshold, ±2.5% accuracy, 2.5µA supply current, SOT-23-3 package. | Higher quiescent current limits battery lifetime; larger SOT-23 footprint increases PCB area. | Select when legacy MAX809 compatibility is required and ultra-low power is not critical. |
| TPS3801K33DBVR | 3.3V threshold, ±0.5% accuracy, 1.8µA supply current, SOT-23-3 package. | Higher trip point may miss early brownout detection on 3.3V rails; higher current impacts energy budget. | Choose for tighter threshold tolerance where 3.3V nominal supervision suffices and layout allows SOT-23. |
Compared with MAX809SEUR+T and TPS3801K33DBVR, ISL88002IE31Z-T delivers superior energy efficiency (160nA vs. >1.8µA), smaller SC-70 footprint, and tighter threshold accuracy (±1.2% vs. ±2.5% or ±0.5% at different voltages), making it optimal for compact, long-life portable designs requiring precise 3.07V monitoring.
Availability
ISL88002IE31Z-T is available at Aetrix Electronics and suitable for microcontroller power sequencing, battery-powered IoT nodes, and portable medical devices requiring stable component supply and long-term lifecycle support.
Supply support for ISL88002IE31Z-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 microcontrollers, analog, power, and connectivity solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88002IE31Z-T belongs to Renesas' ultra-low-power voltage supervisor family, designed specifically for reliable power-on reset and brownout detection in space- and energy-constrained portable and embedded systems.
FAQ
What is the exact reset threshold voltage of ISL88002IE31Z-T and how tightly is it specified?
The ISL88002IE31Z-T has a nominal reset threshold of 3.07V, with guaranteed accuracy of ±1.2% over the -40°C to +85°C temperature range. At +25°C, the typical value is 3.075V, and the full min/max specification is 3.000V to 3.150V. This tight tolerance eliminates need for external trimming in precision 3.3V rail supervision.
Does ISL88002IE31Z-T require an external pull-up resistor on the RST pin?
Yes, ISL88002IE31Z-T features an open-drain RST output and requires an external pull-up resistor. The datasheet recommends values between 5kΩ and 100kΩ. Typical use employs a 10kΩ resistor to 3.3V, enabling wired-OR reset bus configurations and compatibility with various logic families.
Can ISL88002IE31Z-T operate reliably at supply voltages below 1.8V?
No - while the reset signal remains valid down to VDD = 1V (enabling brownout detection), the ISL88002IE31Z-T's specified supply voltage range is 1.8V to 5.5V. Operation below 1.8V is outside absolute maximum ratings and not characterized; sustained use below 1.8V may result in undefined behavior or parametric failure.
How does the power-on reset (POR) timeout of ISL88002IE31Z-T compare to similar supervisors?
The ISL88002IE31Z-T provides a typical POR timeout of 190ms, with a guaranteed range of 140–260ms. This exceeds the 140ms minimum of ISL88001 and matches ISL88003 timing closely. It is longer than MAX809's 140ms typical, offering additional margin for slow-ramping supplies or FPGA configuration loading.
Is ISL88002IE31Z-T pin-compatible with other members of the ISL8800x family?
Yes - ISL88002IE31Z-T shares identical 3-lead SC-70 pinout and footprint with all ISL88001/88002/88003 variants in the same package (e.g., ISL88001IE31Z-T, ISL88003IE31Z-T). Pin 1 = GND, Pin 2 = RST, Pin 3 = VDD. Only the reset output type (open-drain vs. push-pull) and threshold differ - no PCB redesign is needed when swapping within the same package variant.
ISL88002IE31Z-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- SC-70-3
ISL88002IE31Z-T FAQ
1.How can I place an order for ISL88002IE31Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE31Z-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 ISL88002IE31Z-T reliable?
The price and inventory of ISL88002IE31Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE31Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IE31Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE31Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE31Z-T?
ISL88002IE31Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE31Z-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 ISL88002IE31Z-T?
For technical support, including ISL88002IE31Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE31Z-T requirements.
6.How does Aetrix verify that ISL88002IE31Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IE31Z-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 ISL88002IE31Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IE31Z-T?
All ISL88002IE31Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE31Z-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 ISL88002IE31Z-T part is unused and in its original packaging.
Return procedure for ISL88002IE31Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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