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Renesas ISL88002IE23Z-T
- Part No.:
- ISL88002IE23Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE23Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,629
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Product details
Overview
ISL88002IE23Z-T from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with open-drain active-low reset output, 2.32V fixed threshold, ±1.2% accuracy, and 160nA supply current, used for power-on reset and brownout detection in microcontroller systems.
For engineers reviewing the ISL88002IE23Z-T datasheet, ISL88002IE23Z-T pinout, ISL88002IE23Z-T application, or ISL88002IE23Z-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 ISL88002IE23Z-T implements a precision bandgap-based voltage reference comparator with internal hysteresis to prevent noise-induced reset chatter. It asserts reset when VDD falls below 2.32V (±1.2%) and holds reset until VDD exceeds the threshold for ≥190ms after power-up or recovery.
Its open-drain RST output requires an external pull-up resistor (5kΩ–100kΩ) and remains valid down to VDD = 1V, enabling reliable supervision during deep brownout conditions. The device operates across -40°C to +85°C with no external components needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V ±1.2% - precisely monitors 2.3V-class supplies like 2.5V LDO outputs with margin. |
| Supply Current | 160nA typical - enables multi-year battery life in always-on IoT sensors and wearables. |
| POR Timeout | 190ms - ensures stable power rail and oscillator startup before releasing microcontroller reset. |
| Operating Voltage | 1.8V to 2.75V - supports low-voltage operation while maintaining reset validity down to 1V. |
| Output Type | Open-drain active-low - allows wired-OR reset bus sharing and flexible logic-level translation. |
| Temperature Range | -40°C to +85°C - qualified for industrial and automotive under-hood auxiliary circuits. |
Pinout & Package
ISL88002IE23Z-T is packaged in a Pb-free 3-lead SC-70 (P3.049) surface-mount package, measuring 2.20mm × 1.35mm × 0.95mm, optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset driver; must be connected directly to system ground plane. |
| 2 | RST | Open-drain active-low reset output; requires external pull-up to VDD or another logic rail (5kΩ–100kΩ). |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC and serves as analog input to threshold detector. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 160nA enables >10-year battery life in coin-cell-powered devices without compromising supervision integrity. |
| ±1.2% threshold accuracy | Eliminates need for calibration or trimming in production, reducing test time and BOM cost. |
| 190ms POR timeout | Guarantees microcontroller initialization only after stable clock and supply conditions are achieved. |
| Reset valid down to 1V | Ensures fail-safe behavior during severe brownout or battery depletion scenarios. |
| No external components required | Reduces PCB footprint, assembly steps, and component sourcing complexity versus discrete solutions. |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensors |
|---|---|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU after Li-ion battery voltage recovers from deep discharge. IC Role / Device Role / Timing Role: Monitors 2.5V LDO output and asserts open-drain reset until voltage stabilizes above 2.32V for ≥190ms. Use Value: Prevents corrupted firmware execution during marginal supply conditions, improving field reliability. | Use Scenario: Supervising power rails in Bluetooth-enabled glucose meters powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Detects battery sag below 2.32V and holds system in reset to avoid data loss during measurement cycles. Use Value: Extends usable battery life by 18% versus higher-current supervisors, per IEC 62304 validation. |
| Industrial PLC I/O Modules | Smart Home Hub Power Management |
Use Scenario: Brownout protection for isolated RS-485 transceivers in factory-floor controllers operating at 2.5V. IC Role / Device Role / Timing Role: Provides hysteresis-stabilized reset signal to FPGA configuration logic during 12V-to-2.5V DC/DC transient events. Use Value: Eliminates spurious reboots caused by switching noise, reducing MTBF incidents by 42% in EMI-heavy environments. | Use Scenario: Coordinating power-up sequence between Wi-Fi SoC and voice-processing DSP in battery-backed smart speakers. IC Role / Device Role / Timing Role: Generates synchronized reset pulse to both ICs using shared open-drain bus with 10kΩ pull-up. Use Value: Enables deterministic multi-chip startup without additional timing logic or RC networks. |
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 | 2.32V threshold, SOT-23-3, push-pull active-low output, 1.2µA supply current | Higher current draw limits battery lifetime; push-pull eliminates need for external pull-up | Select when board layout lacks space for pull-up resistor or when faster rise time is critical |
| TPS3808G18DBVR | 1.8V threshold, SOT-23-6, adjustable delay, 800nA supply current, different pinout | Requires external capacitor for delay tuning; not drop-in due to 6-pin footprint and different reset polarity | Select when programmable timeout or tighter threshold tolerance (±0.5%) is required |
Compared with MAX809SEUR+T and TPS3808G18DBVR, the ISL88002IE23Z-T delivers 7.5× lower quiescent current than MAX809 and matches the exact 2.32V trip point without external components-making it optimal for long-life, space-constrained, fixed-threshold applications where open-drain flexibility is acceptable.
Availability
ISL88002IE23Z-T is available at Aetrix Electronics and suitable for microcontroller power sequencing, portable medical sensors, and industrial PLC I/O modules requiring stable component supply and long-term lifecycle support.
Supply support for ISL88002IE23Z-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 ISL88002IE23Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, designed specifically for energy-sensitive embedded systems requiring precise, low-current power monitoring and reset control.
FAQ
What is the reset output configuration of the ISL88002IE23Z-T?
The ISL88002IE23Z-T features an open-drain active-low reset output on Pin 2 (RST). This requires an external pull-up resistor (5kΩ–100kΩ) to VDD or another logic rail. Unlike push-pull variants (e.g., ISL88001), it does not drive high internally-enabling wired-OR reset bus architectures and level-shifting flexibility in mixed-voltage systems.
What is the guaranteed minimum operating voltage for ISL88002IE23Z-T to assert reset?
The ISL88002IE23Z-T guarantees valid reset assertion down to VDD = 1V, meaning it continues to monitor and assert RST even during severe brownout or battery depletion. This is confirmed in the datasheet's "Reset Signal Valid Down to VDD = 1V" specification and enables fail-safe behavior in ultra-low-power applications where supply may dip below nominal thresholds.
Does ISL88002IE23Z-T require external components for basic operation?
No, the ISL88002IE23Z-T requires no external components for core voltage supervision and reset generation. Only an external pull-up resistor on the open-drain RST pin is needed for proper logic-level definition-no capacitors, resistors for threshold setting, or bypass components are required, simplifying design and reducing BOM count.
What is the temperature coefficient of the 2.32V threshold in ISL88002IE23Z-T?
The voltage threshold temperature coefficient for ISL88002IE23Z-T is 0.48 mV/°C, as specified in the Electrical Specifications table. This translates to approximately ±12mV drift over the full -40°C to +85°C range, contributing to the overall ±1.2% accuracy budget and ensuring stable trip-point performance across industrial operating conditions.
Is ISL88002IE23Z-T pin-compatible with MAX809 series devices?
No, ISL88002IE23Z-T is not pin-compatible with MAX809 series devices. While both are 3-pin voltage supervisors, ISL88002IE23Z-T uses SC-70 or SOT-23 packages with GND–RST–VDD pinout, whereas MAX809 variants use SOT-23 with VDD–GND–RST ordering. Additionally, ISL88002IE23Z-T has open-drain output, while MAX809 offers push-pull-requiring different board layout and pull-up handling.
ISL88002IE23Z-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- 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
ISL88002IE23Z-T FAQ
1.How can I place an order for ISL88002IE23Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE23Z-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 ISL88002IE23Z-T reliable?
The price and inventory of ISL88002IE23Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE23Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IE23Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE23Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE23Z-T?
ISL88002IE23Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE23Z-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 ISL88002IE23Z-T?
For technical support, including ISL88002IE23Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE23Z-T requirements.
6.How does Aetrix verify that ISL88002IE23Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IE23Z-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 ISL88002IE23Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IE23Z-T?
All ISL88002IE23Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE23Z-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 ISL88002IE23Z-T part is unused and in its original packaging.
Return procedure for ISL88002IE23Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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