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Renesas ISL88002IE46Z-T
- Part No.:
- ISL88002IE46Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE46Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,348
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Product details
Overview
ISL88002IE46Z-T from Renesas is an ultra-low-power 3-pin voltage supervisor IC with open-drain active-low reset output, 4.62V fixed threshold, ±1.2% accuracy, and 160nA supply current - used for power-on reset and brownout detection in microcontroller systems requiring high reliability and minimal board space.
For engineers reviewing the ISL88002IE46Z-T datasheet, ISL88002IE46Z-T pinout, ISL88002IE46Z-T application, or ISL88002IE46Z-T equivalent, this page delivers verified technical context, package mapping, functional pin definitions, real-world use cases, and validated alternative options for industrial and portable embedded designs.
Technical Context
The ISL88002IE46Z-T integrates a precision bandgap reference, comparator with hysteresis, and POR circuitry to assert reset when VDD falls below 4.62V (±1.2%) or rises above 1V at power-up. Its open-drain RST output requires an external pull-up resistor (5kΩ–100kΩ) and remains valid down to VDD = 1V.
It operates across –40°C to +85°C, consumes only 160nA typical supply current at 1.8V, and features 190ms nominal POR timeout delay with <±0.5% temperature stability over its full range - enabling robust supervision in battery-powered and thermally variable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62V ±1.2% - ensures accurate detection of 4.6V rail collapse without false triggering due to tolerance drift. |
| Supply Current | 160nA typical - enables multi-year operation on coin-cell batteries in always-on monitoring applications. |
| POR Timeout | 190ms nominal - guarantees sufficient hold time for µP/µC initialization and oscillator stabilization after power ramp. |
| 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 configuration and flexible logic-level translation via external pull-up. |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded systems including controllers and portable instrumentation. |
| VDD Validity Limit | Reset signal remains functional down to VDD = 1V - critical for detecting deep brownouts before system lockup. |
Pinout & Package
ISL88002IE46Z-T 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, with gull-wing leads and NiPdAu e4 termination compatible with SnPb and Pb-free reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | IC substrate and comparator reference node; must be connected to system ground plane for stable threshold accuracy. |
| 2 RST | Open-drain active-low reset output | Drives LOW when VDD < 4.62V or during POR; requires external pull-up resistor (5kΩ–100kΩ) to define logic HIGH level. |
| 3 VDD | Power supply and monitored input | Supplies IC bias and serves as the voltage source for threshold comparison; no external components needed. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.62V trip point | Eliminates need for external resistive divider, reducing BOM count and layout area in 4.6V rail supervision. |
| 160nA supply current | Enables integration into energy-harvesting and long-life battery systems without measurable impact on runtime. |
| ±1.2% threshold accuracy | Guarantees reliable reset assertion across temperature and process variation, avoiding marginal brownout behavior. |
| 190ms POR timeout | Meets JEDEC JESD22-A102 requirements for microprocessor reset timing, ensuring deterministic boot sequence. |
| Immunity to supply transients | Hysteresis and internal filtering prevent false resets during fast-rising noise spikes on VDD lines. |
Applications
| Microcontroller Power Supervision | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Monitoring 4.6V analog front-end supply in handheld ECG device during battery discharge. IC Role / Device Role / Timing Role: Voltage supervisor providing active-low reset to MCU upon VDD drop below 4.62V, holding system in reset until stable. Use Value: Prevents corrupted ADC sampling and firmware execution during low-battery brownout, improving diagnostic reliability. |
Use Scenario: Ensuring clean boot of ARM Cortex-M4 in wireless pulse oximeter powered by single Li-ion cell. IC Role / Device Role / Timing Role: Generates 190ms power-on reset pulse at VDD ≥1V, synchronizing MCU startup with LDO stabilization. Use Value: Eliminates need for discrete RC reset circuit, saving 2.5mm² PCB area and reducing component count by 3 parts. |
| Industrial PLC I/O Module | Smart Sensor Node |
|
Use Scenario: Supervising isolated 4.6V auxiliary rail powering CAN transceiver and digital isolator in DIN-rail controller. IC Role / Device Role / Timing Role: Open-drain RST output wired-OR'd with other supervisors to shared reset bus for multi-chip coordination. Use Value: Enables fault-tolerant reset architecture where any rail failure triggers system-wide reset without additional logic. |
Use Scenario: Low-power wake-up supervision in LoRaWAN soil moisture sensor operating on CR2032 battery. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output feeding MCU and RF IC; asserts reset if voltage sags below 4.62V during transmit burst. Use Value: Maintains 160nA quiescent current while delivering precise 4.62V threshold - critical for >5-year battery life. |
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 | 4.63V threshold, ±2.5% accuracy, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits use in ultra-low-power battery systems; tighter thermal drift spec (±50ppm/°C vs ISL88002's ±0.48mV/°C) | Select when legacy MAX809 footprint compatibility is required and 1.2µA current is acceptable. |
| TPS3808G33DBVR | 3.3V threshold (not 4.62V), adjustable via external resistor, 1.5µA supply current, SOT-23-6 package | Requires external resistor network and occupies larger footprint; lacks factory-trimmed 4.62V option | Choose only if programmable threshold is mandatory and 4.62V fixed-point supervision is not required. |
Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88002IE46Z-T delivers superior ultra-low-power operation (160nA vs >1µA), factory-trimmed 4.62V accuracy (±1.2% vs ±2.5%), and smaller SC-70 footprint - making it optimal for space-constrained, long-life 4.6V rail supervision.
Availability
ISL88002IE46Z-T is available at Aetrix Electronics and suitable for microcontroller power supervision, portable medical instrumentation, and industrial PLC I/O modules requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.
Supply support for ISL88002IE46Z-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 analog, mixed-signal, and embedded processing solutions for automotive, industrial, and IoT markets.
The ISL88002IE46Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, designed specifically for reliable power-on reset and brownout protection in space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and accuracy of the ISL88002IE46Z-T?
The ISL88002IE46Z-T has a nominal reset threshold of 4.62V with ±1.2% accuracy over –40°C to +85°C, verified per FN6174 Rev 3.00 datasheet Table "Electrical Specifications". This applies to all units shipped under this part number and is factory-trimmed - no external calibration required.
Does the ISL88002IE46Z-T require an external pull-up resistor on the RST pin?
Yes, the ISL88002IE46Z-T features an open-drain active-low RST output and requires an external pull-up resistor between RST and VDD. The datasheet recommends 5kΩ to 100kΩ; typical design uses 10kΩ for fast rise time and low power consumption. Without this resistor, RST cannot drive HIGH.
What is the minimum supply voltage at which the ISL88002IE46Z-T can assert a valid reset signal?
The ISL88002IE46Z-T guarantees valid reset assertion down to VDD = 1V, as confirmed in the "Features" section and "Electrical Specifications" table of FN6174. This enables reliable brownout detection even during severe undervoltage conditions before complete power loss.
Is the ISL88002IE46Z-T pin-compatible with the MAX809 series?
No - while the ISL88002IE46Z-T is functionally comparable to MAX809 variants and shares the same 3-pin SC-70 footprint, it is not pin-compatible with MAX809 (which uses SOT-23-3). The ISL88002IE46Z-T uses SC-70 (P3.049), whereas MAX809 uses SOT-23 (P3.064); land patterns and thermal characteristics differ.
What is the typical power-on reset timeout duration for the ISL88002IE46Z-T?
The ISL88002IE46Z-T provides a nominal POR timeout of 190ms, with a specified range of 140ms to 260ms per FN6174 Rev 3.00. This delay begins when VDD reaches 1V and ensures µP/µC initialization completes before release from reset - meeting JEDEC JESD22-A102 requirements.
ISL88002IE46Z-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:
- 4.625V
- 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
ISL88002IE46Z-T FAQ
1.How can I place an order for ISL88002IE46Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE46Z-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 ISL88002IE46Z-T reliable?
The price and inventory of ISL88002IE46Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE46Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IE46Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE46Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE46Z-T?
ISL88002IE46Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE46Z-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 ISL88002IE46Z-T?
For technical support, including ISL88002IE46Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE46Z-T requirements.
6.How does Aetrix verify that ISL88002IE46Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IE46Z-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 ISL88002IE46Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IE46Z-T?
All ISL88002IE46Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE46Z-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 ISL88002IE46Z-T part is unused and in its original packaging.
Return procedure for ISL88002IE46Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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