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Renesas ISL88002IE31Z-TK
- Part No.:
- ISL88002IE31Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE31Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,767
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Product details
Overview
ISL88002IE31Z-TK from Renesas Electronics is an ultra-low-power, open-drain voltage supervisor IC designed for precise 3.07V supply monitoring in battery-powered and space-constrained 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 used in microcontroller-based portable equipment to ensure reliable power-up sequencing and brownout protection.
For engineers reviewing the ISL88002IE31Z-TK datasheet, ISL88002IE31Z-TK pinout, ISL88002IE31Z-TK application, or ISL88002IE31Z-TK equivalent, this page provides verified technical context, package mapping, functional pin definitions, real-world use cases, and validated alternative options for industrial and embedded design validation.
Technical Context
The ISL88002IE31Z-TK implements a factory-trimmed bandgap reference and comparator architecture to monitor VDD against a fixed 3.07V trip point with 1% hysteresis. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it active for ≥140ms after VDD exceeds threshold, ensuring stable initialization of downstream logic.
As an open-drain RST output device, it requires an external pull-up resistor (5kΩ–100kΩ) and interfaces directly with µP reset inputs tolerant of open-drain signaling. It operates across –40°C to +85°C with no external components and exhibits immunity to fast power-supply transients due to internal filtering and hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V nominal, ±1.2% accuracy over –40°C to +85°C - ensures precise detection of 3.3V rail collapse without false triggers. |
| Supply Current | 160nA typical at VDD = 1.8V - enables multi-year operation on coin-cell batteries in always-on monitoring applications. |
| POR Timeout | 190ms typical tPOR - guarantees sufficient delay for FPGA configuration or oscillator stabilization before release. |
| Operating Voltage Range | 1.8V to 5.5V - supports supervision of 1.8V, 2.5V, 3.3V, and 5V rails with same device family. |
| Reset Output Type | Active-low open-drain - allows wired-OR reset bus sharing and compatibility with legacy µP reset inputs requiring external pull-up. |
| Valid Reset Down To | VDD = 1V - maintains supervisory function during deep brownout, preventing partial execution in low-voltage fault conditions. |
Pinout & Package
ISL88002IE31Z-TK is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, pkg drawing P3.049), measuring 2.2mm × 1.35mm × 0.95mm, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and POR circuit; must be connected to system ground plane for accurate threshold sensing. |
| 2 | RST | Active-low open-drain reset output; sinks current when asserted; requires external pull-up resistor (5kΩ–100kΩ) to host VDD or logic rail. |
| 3 | VDD | Power supply input and monitored voltage node; supplies internal circuitry and serves as analog input to voltage comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.07V threshold | Factory-trimmed for ±1.2% accuracy - eliminates need for external resistive divider calibration in 3.3V system designs. |
| 160nA supply current | Enables >10-year battery life in coin-cell-powered IoT sensors - critical for maintenance-free remote deployments. |
| 190ms POR timeout | Guarantees full stabilization of 3.3V LDOs and crystal oscillators before releasing µP reset - prevents boot failures. |
| No external components | Reduces BOM count and layout area by eliminating RC networks - accelerates design-in and improves long-term reliability. |
| SC-70 package | 0.65mm pitch, 2.2mm × 1.35mm footprint - fits into tight spaces where SOT-23 is too large, e.g., wearable sensor modules. |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensors |
|---|---|
|
Use Scenario: Ensuring safe startup of ARM Cortex-M0+ MCU in a handheld glucose meter after battery insertion or recharge. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and asserts open-drain reset until voltage stabilizes above 3.07V for ≥190ms. Use Value: Prevents corrupted flash writes or ADC misreads during unstable power ramp, meeting IEC 62304 safety requirements. |
Use Scenario: Supervising 1.8V supply to ultra-low-power BLE SoC in a disposable patch sensor worn for 72 hours. IC Role / Device Role / Timing Role: Provides brownout detection and POR using only 160nA quiescent current, extending battery runtime. Use Value: Enables continuous sensing without reset glitches during voltage sag caused by RF transmission bursts. |
| Industrial PLC I/O Modules | Smart Energy Meters |
|
Use Scenario: Protecting FPGA configuration memory in DIN-rail mounted I/O expansion module exposed to 24V field supply ripple. IC Role / Device Role / Timing Role: Detects 3.3V rail droop below 3.07V and holds system in reset until recovery, with immunity to 100ns transients. Use Value: Avoids partial reconfiguration or metastability in LVDS interface logic during EMI-induced supply noise. |
Use Scenario: Securing accurate metrology processor startup in ANSI C12.20-compliant electricity meter powered by supercapacitor backup. IC Role / Device Role / Timing Role: Asserts reset at VDD ≥ 1V and sustains it for 190ms, ensuring ADC and RTC initialize before measurement cycles begin. Use Value: Guarantees time-of-use billing integrity during grid outage transitions where VDD decays slowly from 3.3V to 1.8V. |
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, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits battery life; tighter board space tolerance required due to larger SOT-23 footprint | Select when legacy MAXIM compatibility or higher drive strength (12mA sink) is prioritized over ultra-low power. |
| TPS3808G30DBVR | 3.0V threshold, ±0.5% accuracy, 800nA supply current, adjustable delay via capacitor, SOT-23-6 | Requires external timing capacitor; 6-pin package increases layout area; superior accuracy but higher cost | Select when sub-1% threshold tolerance or programmable reset timeout is mandatory for high-reliability industrial control. |
Compared with MAX809SEUR+T and TPS3808G30DBVR, the ISL88002IE31Z-TK offers the lowest power consumption (160nA vs. 800nA/1.2µA) and smallest footprint (SC-70 vs. SOT-23), making it optimal for size- and battery-limited designs where ±1.2% threshold accuracy suffices.
Availability
ISL88002IE31Z-TK is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical sensors, industrial PLC I/O modules, smart energy meters, and battery-backed data loggers requiring stable component supply and long-term lifecycle support.
Supply support for ISL88002IE31Z-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, low-power analog and mixed-signal solutions for automotive, industrial, and IoT markets.
The ISL88002IE31Z-TK belongs to Renesas' Ultra Low Power Voltage Supervisor family, engineered specifically for reliable power monitoring in battery-operated and space-constrained embedded systems where minimal current draw and small form factor are critical.
FAQ
What is the exact reset threshold voltage of the ISL88002IE31Z-TK?
The ISL88002IE31Z-TK has a nominal reset threshold of 3.07V, with guaranteed accuracy of ±1.2% over the full operating temperature range (–40°C to +85°C). 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 ISL88002IE31Z-TK require an external pull-up resistor on the RST pin?
Yes, the ISL88002IE31Z-TK features an open-drain RST output and requires an external pull-up resistor. The datasheet recommends values between 5kΩ and 100kΩ, connected from RST to the host logic rail (e.g., 3.3V or 1.8V). This configuration enables wired-OR reset bus architectures and ensures proper logic-high level when reset is inactive.
Can the ISL88002IE31Z-TK operate reliably at VDD = 1.8V?
Yes, the ISL88002IE31Z-TK is fully specified to operate at VDD = 1.8V, drawing only 160nA typical supply current under those conditions. Its reset function remains valid down to VDD = 1V, allowing robust brownout detection even as the supply decays below nominal levels - a key capability confirmed in the Electrical Specifications table of FN6174.
What is the power-on reset timeout duration for the ISL88002IE31Z-TK?
The ISL88002IE31Z-TK provides a typical power-on reset timeout (tPOR) of 190ms. The datasheet specifies a range of 140ms to 260ms over temperature, ensuring sufficient hold time for microcontrollers, FPGAs, and oscillators to stabilize before release. Figure 4 in FN6174 confirms ~155ms typical for ISL88002 variants under test conditions.
Is the ISL88002IE31Z-TK pin-compatible with other members of the ISL8800x family?
Yes, the ISL88002IE31Z-TK shares identical pinout and package (3-lead SC-70) with all ISL88001/88002/88003 variants, including ISL88001IE31Z-TK (push-pull) and ISL88003IE31Z-TK (push-pull high-active). Only the RST output type differs - ISL88002IE31Z-TK uses open-drain, while ISL88001/88003 use push-pull - so PCB layout is reusable across the family with firmware or external circuit adjustments.
ISL88002IE31Z-TK 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-TK FAQ
1.How can I place an order for ISL88002IE31Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE31Z-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 ISL88002IE31Z-TK reliable?
The price and inventory of ISL88002IE31Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE31Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88002IE31Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE31Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE31Z-TK?
ISL88002IE31Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE31Z-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 ISL88002IE31Z-TK?
For technical support, including ISL88002IE31Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE31Z-TK requirements.
6.How does Aetrix verify that ISL88002IE31Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88002IE31Z-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 ISL88002IE31Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88002IE31Z-TK?
All ISL88002IE31Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE31Z-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 ISL88002IE31Z-TK part is unused and in its original packaging.
Return procedure for ISL88002IE31Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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