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Renesas ISL88002IE31Z-T7A
- Part No.:
- ISL88002IE31Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE31Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:145
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Product details
Overview
ISL88002IE31Z-T7A from Renesas Electronics is an ultra-low-power 3-pin open-drain voltage supervisor IC designed for precise monitoring of +3.07V power rails in space-constrained embedded systems. It delivers ±1.2% threshold accuracy, 160nA supply current at 1.8V, 190ms power-on reset timeout, and valid reset assertion down to VDD = 1V. It is deployed in battery-powered microcontroller systems requiring reliable brownout detection and clean startup sequencing.
For engineers reviewing the ISL88002IE31Z-T7A datasheet, ISL88002IE31Z-T7A pinout, ISL88002IE31Z-T7A application, or ISL88002IE31Z-T7A equivalent, key selection criteria include its SC-70-3 package footprint, open-drain RST output with external pull-up requirement, fixed 3.07V trip point, industrial temperature range (–40°C to +85°C), and compatibility with low-voltage logic interfaces.
Technical Context
The ISL88002IE31Z-T7A implements a precision bandgap-based voltage reference comparator with internal hysteresis to prevent noise-induced reset chatter. Its POR circuit asserts reset at VDD ≥ 1V and holds it active until VDD exceeds 3.07V for ≥190ms, ensuring stable power rail establishment before system release.
As an open-drain variant in the ISL8800x family, the ISL88002IE31Z-T7A requires an external pull-up resistor (5kΩ–100kΩ) on the RST pin to generate an active-low reset signal compatible with µP/µC reset inputs. It operates across 1.8V–5.5V supply range but maintains full functionality-including valid reset output-down to VDD = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V nominal (±1.2% over –40°C to +85°C); ensures accurate detection of 3.3V rail brownout at 3.07V. |
| Supply Current | 160nA typical at VDD = 1.8V; enables multi-year battery life in always-on supervisory applications. |
| POR Timeout | 190ms typical; guarantees sufficient delay for power rail stabilization and oscillator startup before release. |
| Reset Valid Down To | VDD = 1V; allows functional reset assertion even during deep undervoltage conditions. |
| Output Type | Open-drain RST; supports wired-OR reset buses and level translation via external pull-up. |
| Package | 3-lead SC-70 (P3.049); 1.8mm × 1.2mm footprint ideal for portable and wearables PCBs. |
| Temperature Range | –40°C to +85°C industrial grade; validated for operation in harsh ambient environments. |
Pinout & Package
ISL88002IE31Z-T7A is housed in a Pb-free 3-lead SC-70 plastic package (JEDEC MO-203AA, Renesas pkg drawing P3.049), measuring 1.80mm × 1.20mm × 0.95mm with gull-wing leads. The package is RoHS-compliant and MSL3 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset logic; must be connected to system ground plane. |
| 2 | RST | Active-low open-drain reset output; requires external pull-up (5kΩ–100kΩ) to VDD or higher logic rail. |
| 3 | VDD | Power supply input and monitored voltage source; supplies IC and provides input to threshold comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 160nA at 1.8V enables >10-year battery life in coin-cell-powered IoT sensors. |
| High threshold accuracy | ±1.2% over temperature eliminates need for calibration in production test. |
| Valid reset at 1V VDD | Ensures deterministic system halt during deep brownout, preventing undefined MCU states. |
| No external components required | Integrated POR and hysteresis eliminate capacitors, resistors, or trimming networks. |
| SC-70 and SOT-23 compatibility | Same pinout as MAX803/MAX809/MAX810 simplifies drop-in replacement in legacy designs. |
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: Voltage supervisor providing active-low reset signal synchronized to 3.07V rail recovery with 190ms hold time. Use Value: Prevents MCU execution under marginal voltage, avoiding flash corruption and peripheral lockup. |
Use Scenario: Monitoring regulated 3.3V supply in wearable ECG patch operating on CR2032 coin cell. IC Role / Device Role / Timing Role: Low-power supervisor asserting reset when battery drops below 3.07V, extending usable runtime. Use Value: 160nA current draw minimizes standby drain, directly increasing device operational lifespan. |
| Industrial PLC I/O Modules | Smart Home Hub Controllers |
Use Scenario: Detecting AC/DC converter output sag during transient load steps in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Immune-to-transient supervisor triggering reset only on sustained <3.07V condition with built-in hysteresis. Use Value: Eliminates false resets caused by switching noise, improving system uptime and diagnostics reliability. |
Use Scenario: Enabling graceful shutdown and state preservation in voice-controlled hubs during USB-C adapter disconnect. IC Role / Device Role / Timing Role: Open-drain RST output pulled to 3.3V logic rail, enabling shared reset bus with PMIC and Wi-Fi SoC. Use Value: Wired-OR capability allows coordinated reset across multiple subsystems without additional logic. |
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 (±1.5%), 1.2µA supply current, SOT-23-3 package. | Higher quiescent current limits use in multi-year battery applications; same pinout. | Select when legacy MAX809 footprint compatibility is mandatory and 1.2µA is acceptable. |
| TPS3808G33DBVR | 3.3V threshold (±0.5%), 1.1µA supply current, adjustable delay, SOT-23-6 package. | Requires 3 extra pins for delay configuration; tighter threshold tolerance but higher current. | Select when higher accuracy and programmable timeout outweigh board space and current penalties. |
Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88002IE31Z-T7A offers the lowest power consumption (160nA vs >1µA) and smallest footprint (SC-70-3), making it optimal for ultra-low-power, size-sensitive designs where 3.07V threshold and open-drain output meet system requirements.
Availability
ISL88002IE31Z-T7A is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical sensors, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ISL88002IE31Z-T7A 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 engineered specifically for ultra-low-power voltage supervision in battery-operated and space-constrained electronics, emphasizing nanoscale current draw, factory-trimmed accuracy, and minimal external component count.
FAQ
What is the exact reset threshold voltage of the ISL88002IE31Z-T7A?
The ISL88002IE31Z-T7A has a nominal reset threshold voltage of 3.07V, with guaranteed accuracy of ±1.2% over the full industrial temperature range (–40°C to +85°C). At +25°C, the typical value is 3.075V, and the min/max limits are 3.000V and 3.150V respectively per the FN6174 datasheet.
Does the ISL88002IE31Z-T7A require an external pull-up resistor on the RST pin?
Yes, the ISL88002IE31Z-T7A features an open-drain RST output and requires an external pull-up resistor between the RST pin and a logic supply (typically VDD or 3.3V). The recommended value is 5kΩ to 100kΩ, as specified in the datasheet's Pin Descriptions section.
What is the power-on reset timeout duration for the ISL88002IE31Z-T7A?
The ISL88002IE31Z-T7A provides a typical power-on reset timeout of 190ms. Per the Electrical Specifications table, the guaranteed range is 140ms to 260ms over temperature, ensuring robust delay for power rail stabilization and oscillator startup before releasing the reset signal.
Can the ISL88002IE31Z-T7A operate with supply voltages below 1.8V?
Yes - while the ISL88002IE31Z-T7A is fully specified for VDD = 1.8V to 5.5V, its reset function remains valid down to VDD = 1V. This allows the device to assert reset during deep brownout conditions where other supervisors may fail, enhancing system reliability.
Is the ISL88002IE31Z-T7A pin-compatible with MAX809 devices?
Yes, the ISL88002IE31Z-T7A shares identical pinout and package dimensions with MAX803, MAX809, and MAX810 in both SC-70-3 and SOT-23-3 variants. However, note that ISL88002IE31Z-T7A uses an open-drain RST output, whereas MAX809 is push-pull - external pull-up is required for direct functional equivalence.
ISL88002IE31Z-T7A 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-T7A FAQ
1.How can I place an order for ISL88002IE31Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE31Z-T7A 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-T7A reliable?
The price and inventory of ISL88002IE31Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE31Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88002IE31Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE31Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE31Z-T7A?
ISL88002IE31Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE31Z-T7A 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-T7A?
For technical support, including ISL88002IE31Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE31Z-T7A requirements.
6.How does Aetrix verify that ISL88002IE31Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88002IE31Z-T7A 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-T7A meets industry standards.
7.What is the process for return or replacement of ISL88002IE31Z-T7A?
All ISL88002IE31Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE31Z-T7A, 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-T7A part is unused and in its original packaging.
Return procedure for ISL88002IE31Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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