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Renesas ISL88002IH31Z-T
- Part No.:
- ISL88002IH31Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88002IH31Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
ISL88002IH31Z-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-based systems to ensure reliable power-on reset and brownout protection down to 1V supply.
For engineers reviewing the ISL88002IH31Z-T datasheet, ISL88002IH31Z-T pinout, ISL88002IH31Z-T application, or ISL88002IH31Z-T equivalent, key selection criteria include reset output type (open-drain), trip point tolerance, POR timeout stability across temperature, and compatibility with low-voltage portable designs requiring minimal quiescent current.
Technical Context
The ISL88002IH31Z-T integrates a precision voltage reference, comparator with hysteresis, and power-on reset timer into a single 3-pin SOT-23 package. Its internal POR circuit asserts reset at VDD = 1V and maintains it for 190ms (typical) after VDD exceeds the 3.07V threshold.
Designed for direct integration into power rails of microcontrollers and FPGAs, the device uses no external components and features immunity to supply transients. The open-drain RST output requires an external pull-up resistor (5kΩ–100kΩ) to interface with diverse logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V ±1.2% - ensures accurate detection of 3.3V rail brownout without false triggering. |
| Supply Current | 160nA typical at 1.8V - enables multi-year battery life in always-on sensor nodes. |
| POR Timeout | 190ms typical - guarantees sufficient stabilization time for MCU oscillator and register initialization. |
| Operating Voltage Range | 1.8V to 5.5V - supports supervision of 1.8V, 2.5V, 3.3V, and 5V supplies with same part. |
| Reset Output Type | Active-low open-drain - allows wired-OR configuration and flexible logic-level translation via external pull-up. |
| Min Valid VDD for Reset | 1V - enables reliable reset assertion even during deep brownout or battery depletion. |
| Temp Range | -40°C to +85°C - qualified for industrial and automotive cabin applications. |
Pinout & Package
ISL88002IH31Z-T 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. Pin 1 = GND, Pin 2 = RST (open-drain active-low), Pin 3 = VDD (monitored supply input and power pin).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | IC ground reference; must be connected directly to system power plane for stable threshold reference. |
| 2 | RST | Open-drain active-low reset output; requires external pull-up resistor to host logic supply (e.g., 10kΩ to 3.3V). |
| 3 | VDD | Power supply input and monitored voltage source; connects directly to the rail under supervision (e.g., 3.3V MCU VCC). |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.07V threshold | Matches nominal 3.3V supply with 300mV hysteresis margin - eliminates need for external resistor divider or trimming. |
| 160nA supply current | Reduces standby power by >90% vs. legacy supervisors - critical for coin-cell-powered IoT endpoints. |
| 190ms POR timeout | Guarantees MCU clock stabilization and firmware boot readiness before release - prevents race conditions. |
| Reset valid down to 1V | Ensures fail-safe shutdown during battery sag or LDO dropout - avoids undefined MCU state. |
| SC-70/SOT-23 footprint | Enables drop-in replacement across package variants - simplifies PCB design reuse and inventory consolidation. |
Applications
| Microcontroller Power Supervision | Portable Medical Sensors |
|---|---|
Use Scenario: Monitoring 3.3V supply to ARM Cortex-M0+ MCU in a wearable ECG patch. IC Role / Device Role / Timing Role: Voltage supervisor providing active-low reset signal to MCU's nRESET pin during power-up and brownout. Use Value: 160nA quiescent current extends CR2032 battery life beyond 3 years; 3.07V threshold ensures reset deassertion only after stable 3.3V rail operation. | Use Scenario: Ensuring safe startup and shutdown of a Bluetooth LE pulse oximeter powered by a single Li-ion cell. IC Role / Device Role / Timing Role: Supervisor asserting reset when cell voltage drops below 3.07V, preventing corrupted ADC readings or BLE radio instability. Use Value: Open-drain RST output interfaces cleanly with 1.8V BLE SoC reset input using 1.8V pull-up; 1V minimum operating voltage covers full discharge curve. |
| Industrial PLC I/O Modules | Smart Energy Meters |
Use Scenario: Supervising 5V auxiliary supply in DIN-rail mounted programmable logic controller I/O expansion module. IC Role / Device Role / Timing Role: Single-supply monitor generating reset pulse to FPGA configuration controller during cold start. Use Value: ±1.2% threshold accuracy over -40°C to +85°C eliminates calibration drift; 190ms POR aligns with FPGA bitstream load timing. | Use Scenario: Brownout protection for metrology ASIC and real-time clock in Class 0.5S electricity meter. IC Role / Device Role / Timing Role: Reset generator tied to 3.3V metrology rail, holding system in reset until voltage stabilizes post-mains interruption. Use Value: Immunity to power transients prevents spurious resets during relay switching; small SOT-23 footprint saves space on high-density meter PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 3.08V threshold, ±2.5% accuracy, 2.5µA supply current, SOT-23-3, push-pull RST | Higher quiescent current limits use in battery-critical designs; push-pull eliminates need for external pull-up but lacks wired-OR capability | Select MAX809TRD3-T only if board layout already uses push-pull reset and power budget permits 15× higher IDD. |
| TPS3808G30DBVR | 3.0V threshold, ±0.5% accuracy, 800nA supply current, SOT-23-6, adjustable delay, open-drain RST | Requires external capacitor for delay tuning; 6-pin package increases footprint; tighter threshold spec suits precision analog systems | Choose TPS3808G30DBVR when ±0.5% threshold accuracy is mandatory and PCB area allows 6-pin variant. |
Compared with ISL88002IH31Z-T, MAX809TRD3-T consumes significantly more current and lacks brownout robustness below 1.5V, while TPS3808G30DBVR offers superior accuracy and flexibility at the cost of larger size and design complexity - making ISL88002IH31Z-T optimal for space-constrained, ultra-low-power 3.3V supervision.
Availability
ISL88002IH31Z-T is available at Aetrix Electronics and suitable for microcontroller power supervision, portable medical sensors, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88002IH31Z-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 ISL88002IH31Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, engineered specifically for battery-operated and energy-sensitive applications where nanoscale current draw and precise reset control are essential.
FAQ
What is the exact reset threshold voltage of the ISL88002IH31Z-T?
The ISL88002IH31Z-T has a nominal reset threshold voltage of 3.07V, with guaranteed accuracy of ±1.2% over the full -40°C to +85°C operating range. At +25°C, the typical trip point is 3.075V, and the min/max limits are 3.000V and 3.150V respectively per the FN6174 datasheet.
Does the ISL88002IH31Z-T require external components to operate?
No, the ISL88002IH31Z-T operates autonomously with no external components required for basic supervision. Only an external pull-up resistor (5kΩ–100kΩ) on the RST pin is needed due to its open-drain output configuration - no capacitors, resistors, or dividers are necessary for threshold setting or timing.
Can the ISL88002IH31Z-T supervise a 1.8V supply?
Yes, the ISL88002IH31Z-T supports operation with VDD as low as 1.8V, and its reset signal remains valid down to VDD = 1V. However, its fixed 3.07V threshold is optimized for 3.3V rails; for 1.8V supervision, a different variant such as ISL88002IE17Z-T (1.67V threshold) should be selected.
What is the power-on reset timeout duration for the ISL88002IH31Z-T?
The ISL88002IH31Z-T provides a typical power-on reset timeout of 190ms, with a specified range of 140ms to 260ms over temperature. This delay ensures the monitored microcontroller or FPGA has sufficient time to stabilize clocks and initialize internal registers before release from reset.
Is the ISL88002IH31Z-T pin-compatible with other members of the ISL8800x family?
Yes, the ISL88002IH31Z-T shares identical pinout (GND-RST-VDD), package (3-lead SOT-23), and footprint with all ISL88001/002/003 variants in SOT-23 and SC-70 packages. This enables direct substitution across threshold voltages and reset output types without PCB changes.
ISL88002IH31Z-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:
- 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-T FAQ
1.How can I place an order for ISL88002IH31Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IH31Z-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 ISL88002IH31Z-T reliable?
The price and inventory of ISL88002IH31Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IH31Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IH31Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IH31Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IH31Z-T?
ISL88002IH31Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IH31Z-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 ISL88002IH31Z-T?
For technical support, including ISL88002IH31Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IH31Z-T requirements.
6.How does Aetrix verify that ISL88002IH31Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IH31Z-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 ISL88002IH31Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IH31Z-T?
All ISL88002IH31Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IH31Z-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 ISL88002IH31Z-T part is unused and in its original packaging.
Return procedure for ISL88002IH31Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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