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Renesas ISL88002IE29Z-T
- Part No.:
- ISL88002IE29Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE29Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,425
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Product details
Overview
ISL88002IE29Z-T from Renesas Electronics is an ultra-low-power 3-lead voltage supervisor IC with open-drain active-low reset output, 2.92V fixed threshold, ±1.2% accuracy, 160nA supply current, and 190ms power-on reset timeout. It monitors VDD in battery-powered microcontroller systems to prevent erratic operation during brownout or startup.
For engineers reviewing the ISL88002IE29Z-T datasheet, ISL88002IE29Z-T pinout, ISL88002IE29Z-T application, or ISL88002IE29Z-T equivalent, key selection considerations include its SC-70 package footprint, 1V minimum valid reset assertion voltage, immunity to supply transients, and compatibility with 1.8–5.0V logic domains.
Technical Context
The ISL88002IE29Z-T implements a precision bandgap-based voltage reference and comparator circuit to detect falling VDD below 2.92V with 1% hysteresis. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it for 190ms after VDD exceeds threshold, ensuring stable MCU initialization.
As an open-drain RST device, it requires an external pull-up resistor (5kΩ–100kΩ) and interfaces directly with CMOS/TTL inputs. It operates across –40°C to +85°C with no external components and consumes only 160nA typical supply current at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.92V nominal, ±1.2% accuracy over temperature - ensures precise brownout detection for 3.0V/3.3V rails. |
| Supply Current | 160nA typical at 1.8V - enables multi-year battery life in always-on monitoring applications. |
| POR Timeout | 190ms typical - guarantees sufficient delay for FPGA configuration or oscillator stabilization before release. |
| Reset Valid Down To | VDD = 1V - supports reliable reset assertion even during deep brownout or low-battery conditions. |
| Output Type | Active-low open-drain RST - allows wired-OR reset bus sharing and flexible logic-level translation via pull-up. |
| Operating Temp | –40°C to +85°C - qualified for industrial and portable equipment environments without derating. |
| Package | 3-lead SC-70 (P3.049) - 1.25mm × 0.80mm footprint saves PCB area vs. SOT-23 while maintaining reflow compatibility. |
Pinout & Package
ISL88002IE29Z-T is housed in a Pb-free 3-lead SC-70 plastic package (JEDEC MO-203AA, Renesas drawing P3.049), measuring 1.25mm × 0.80mm × 0.50mm. The package is RoHS-compliant and MSL-1 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset driver; must be connected to system ground plane. |
| 2 | RST | Open-drain active-low reset output; sinks current when asserted; requires external pull-up to VDD or higher logic rail. |
| 3 | VDD | Power supply input and monitored voltage source; supplies IC bias and serves as threshold reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.92V threshold | Matches common 3.0V supply rails with ±1.2% accuracy - eliminates need for external resistive divider calibration. |
| 160nA ultra-low IDD | Reduces quiescent power by >90% vs. legacy supervisors - critical for coin-cell or energy-harvesting designs. |
| 190ms POR timeout | Guarantees reset hold time exceeds typical MCU/FPGA boot sequences - prevents premature release. |
| Reset valid down to 1V | Enables fail-safe supervision even under severe undervoltage - avoids false releases during battery sag. |
| SC-70 package | 0.8mm width and 1.25mm length - fits high-density layouts where SOT-23 is too large, with identical reflow profile. |
Applications
| Microprocessor Power-Up Control | Portable Medical Sensor Node |
|---|---|
Use Scenario: Ensures clean boot of ARM Cortex-M0+ MCU in a handheld glucose meter powered by a single CR2032 cell. IC Role / Device Role / Timing Role: Monitors VDD and asserts open-drain RST until voltage stabilizes above 2.92V for 190ms, holding MCU in reset during battery ramp-up. Use Value: Prevents firmware corruption caused by marginal supply during cold-start; 160nA current extends shelf life beyond 5 years. |
Use Scenario: Supervises power to a low-power BLE SoC and analog front-end in a wearable ECG patch. IC Role / Device Role / Timing Role: Provides active-low reset signal tied to BLE SoC's nRESET pin via 10kΩ pull-up; asserts at VDD ≤ 2.92V with hysteresis. Use Value: Eliminates need for discrete transistor reset circuits; SC-70 footprint matches tight space constraints on flex PCB. |
| Industrial PLC I/O Module | Smart Energy Meter MCU Subsystem |
Use Scenario: Guards against brownout-induced latch-up in a 24V-to-3.3V isolated power domain feeding an STM32H7 MCU. IC Role / Device Role / Timing Role: Monitors post-regulator 3.3V rail; RST output drives optocoupler input to isolate reset propagation across isolation barrier. Use Value: Immunity to fast transients (e.g., relay switching noise) prevents spurious resets; ±1.2% threshold ensures consistent trip across temperature. |
Use Scenario: Supervises auxiliary 3.0V supply powering metrology ADC and real-time clock in a Class 0.5 electricity meter. IC Role / Device Role / Timing Role: Generates reset pulse upon AC mains interruption or backup capacitor discharge below 2.92V. Use Value: 1V minimum reset validity ensures reliable assertion even as supercapacitor decays from 3.0V to 1.2V - maintains data integrity during power loss. |
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 | 2.93V threshold, ±2.5% accuracy, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits battery life; larger SOT-23 footprint increases board area | Choose if existing layout uses SOT-23 and ±2.5% tolerance is acceptable for 3.0V rail margin. |
| TPS3808G18DBVR | 1.8V threshold, adjustable via external resistor, 1.1µA supply current, SC-70-5 package | Requires external resistor network; 5-pin SC-70 incompatible with 3-pin footprint; not drop-in | Choose only if design requires programmable threshold and can accommodate extra pin and resistor. |
Compared with MAX809SEUR+T and TPS3808G18DBVR, the ISL88002IE29Z-T delivers superior accuracy (±1.2% vs. ±2.5%), 7× lower supply current (160nA vs. 1.2µA), and direct SC-70 footprint compatibility - making it optimal for space-constrained, long-life battery applications requiring precise 2.92V supervision.
Availability
ISL88002IE29Z-T is available at Aetrix Electronics and suitable for microcontroller power-up control, portable medical sensor nodes, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88002IE29Z-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 analog and mixed-signal solutions for industrial, automotive, and IoT applications.
The ISL88002IE29Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, designed specifically for battery-operated and energy-sensitive systems requiring precise, low-current power monitoring and reset generation.
FAQ
What is the reset output configuration of the ISL88002IE29Z-T?
The ISL88002IE29Z-T features an active-low open-drain RST output. It pulls the RST pin to GND when reset is asserted and requires an external pull-up resistor (5kΩ–100kΩ) to VDD or another logic rail. This configuration enables wired-OR reset buses and level-shifting flexibility, distinguishing it from push-pull variants like ISL88001 and ISL88003.
Does the ISL88002IE29Z-T require external components to operate?
No, the ISL88002IE29Z-T operates with zero external components beyond the mandatory pull-up resistor on the RST pin. Its internal voltage reference, comparator, and POR timer are fully integrated. No capacitors, resistors, or diodes are needed for basic supervision - simplifying BOM and reducing PCB area versus discrete reset solutions.
What is the minimum supply voltage at which the ISL88002IE29Z-T can assert reset?
The ISL88002IE29Z-T guarantees valid reset assertion down to VDD = 1V. This means the RST output will reliably go LOW when VDD falls to or below 1V, even though the 2.92V threshold is not met - providing fail-safe behavior during deep brownout or battery depletion scenarios.
Is the ISL88002IE29Z-T pin-compatible with other members of the ISL8800x family?
Yes, the ISL88002IE29Z-T shares identical 3-lead SC-70 pinout and footprint with all ISL88001/ISL88002/ISL88003 variants in the same package (e.g., ISL88001IE29Z-T, ISL88003IE29Z-T). Pin 1 is GND, Pin 2 is RST, and Pin 3 is VDD - enabling direct substitution where open-drain output is required.
What is the thermal performance of the ISL88002IE29Z-T in SC-70 package?
The ISL88002IE29Z-T in SC-70 package has a typical junction-to-ambient thermal resistance (θJA) of 640°C/W, measured per JEDEC JESD51-2A on a high-thermal-conductivity test board. This value reflects its ultra-low 160nA power dissipation - resulting in negligible self-heating (<0.1°C rise) even at maximum ambient temperature.
ISL88002IE29Z-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:
- 2.925V
- 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
ISL88002IE29Z-T FAQ
1.How can I place an order for ISL88002IE29Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE29Z-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 ISL88002IE29Z-T reliable?
The price and inventory of ISL88002IE29Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE29Z-T is usually 5 days.
3.What payment methods are accepted for ISL88002IE29Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE29Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE29Z-T?
ISL88002IE29Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE29Z-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 ISL88002IE29Z-T?
For technical support, including ISL88002IE29Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE29Z-T requirements.
6.How does Aetrix verify that ISL88002IE29Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88002IE29Z-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 ISL88002IE29Z-T meets industry standards.
7.What is the process for return or replacement of ISL88002IE29Z-T?
All ISL88002IE29Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE29Z-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 ISL88002IE29Z-T part is unused and in its original packaging.
Return procedure for ISL88002IE29Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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