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Renesas ISL88002IH31Z-T7A
- Part No.:
- ISL88002IH31Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88002IH31Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,487
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Product details
Overview
ISL88002IH31Z-T7A from Renesas is an ultra-low-power 3-pin voltage supervisor IC with open-drain active-low reset output, 3.07V fixed threshold, ±1.2% accuracy, 190ms power-on reset timeout, and operation down to VDD = 1V. It monitors single-supply rails in portable microcontroller systems requiring reliable brownout detection and minimal quiescent current.
For engineers reviewing the ISL88002IH31Z-T7A datasheet, ISL88002IH31Z-T7A pinout, ISL88002IH31Z-T7A application, or ISL88002IH31Z-T7A equivalent, key selection criteria include its 160nA supply current, SOT-23-3 package compatibility, open-drain RST interface for flexible logic-level translation, and industrial temperature range (-40°C to +85°C) suitability for battery-powered embedded designs.
Technical Context
The ISL88002IH31Z-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 until VDD exceeds 3.07V for ≥190ms, ensuring stable initialization of downstream microcontrollers.
As an open-drain variant in the ISL8800x family, it requires an external pull-up resistor (5kΩ–100kΩ) on the RST pin to define the high-state logic level, enabling direct interfacing with diverse I/O voltages (e.g., 1.8V, 3.3V, or 5V logic domains) without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V nominal, ±1.2% accuracy ensures precise brownout detection for 3.3V systems without calibration. |
| Supply Current | 160nA typical at 1.8V enables multi-year battery life in always-on monitoring applications. |
| POR Timeout | 190ms minimum delay guarantees microcontroller core and peripherals stabilize before release from reset. |
| Operating Voltage | Valid reset assertion down to VDD = 1V supports ultra-low-voltage startup in energy-harvesting designs. |
| Output Type | Open-drain active-low RST allows shared bus reset signaling and voltage-level flexibility via external pull-up. |
| Temperature Range | -40°C to +85°C industrial grade ensures reliability in automotive infotainment and industrial edge nodes. |
| Package | 3-lead SOT-23 (Pb-free, RoHS compliant) provides compact footprint and standard reflow compatibility. |
Pinout & Package
ISL88002IH31Z-T7A uses a 3-lead SOT-23 package (JEDEC TO-236, pkg drawing P3.064), with 1.30mm × 2.37mm body size, 0.95mm lead pitch, and 0.38mm max height - optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | IC substrate and comparator reference node; must be connected to system ground plane for accurate threshold sensing. |
| 2 (RST) | Open-drain reset output | Active-low signal asserted when VDD < 3.07V; requires external pull-up resistor (5kΩ–100kΩ) to define logic-high voltage. |
| 3 (VDD) | Power supply & monitored input | Supplies IC bias current and serves as the sensed rail; no external components needed for basic supervision. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.07V threshold | Matches common 3.3V supply tolerance margins, eliminating need for external resistive divider tuning. |
| 160nA supply current | Reduces standby power by >90% versus legacy supervisors, critical for coin-cell or energy-harvesting systems. |
| 190ms POR timeout | Guarantees sufficient time for crystal oscillator stabilization and register initialization in low-power MCUs. |
| 1V valid reset operation | Enables robust reset assertion even during deep brownout or cold-start conditions below 1.8V. |
| Immunity to supply transients | Hysteresis and internal filtering prevent false resets caused by brief voltage spikes or ripple on VDD. |
Applications
| Microcontroller Power-Up Sequencing | Battery-Powered IoT Sensor Nodes |
|---|---|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU after Li-ion battery wake-up from deep sleep. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and asserts open-drain RST until voltage stabilizes above 3.07V for 190ms. Use Value: Prevents firmware execution with unstable clock or insufficient core voltage, eliminating boot failures in field-deployed devices. | Use Scenario: Supervising supply to BLE SoC and environmental sensor in wireless smoke detector. IC Role / Device Role / Timing Role: Provides 3.07V brownout detection and 190ms POR using only 160nA quiescent current. Use Value: Extends 2xAA alkaline battery life beyond 5 years while maintaining guaranteed reset integrity during voltage sag. |
| Industrial PLC I/O Module | Portable Medical Diagnostic Handheld |
Use Scenario: Reset coordination across multiple isolated 3.3V digital subsystems in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Open-drain RST output tied to shared reset bus with 10kΩ pull-up to 3.3V, asserting on any rail undervoltage. Use Value: Enables synchronized recovery of FPGA, ADC, and communication interfaces without custom reset arbitration logic. | Use Scenario: Power sequencing for 1.8V/3.3V dual-rail imaging ASIC in handheld ultrasound probe. IC Role / Device Role / Timing Role: Monitors 3.3V analog supply and triggers reset if voltage drops below 3.07V during battery discharge. Use Value: Guarantees clean shutdown before analog front-end distortion occurs, preserving diagnostic image fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 3.08V threshold, ±2.5% accuracy, 140ms POR, SOT-23-3, push-pull RST | Push-pull output limits voltage-level flexibility; higher threshold drift over temperature | Select when board already uses MAX809 footprint and push-pull reset suffices |
| TPS3808G30DBVR | 3.0V threshold, ±0.5% accuracy, adjustable POR (200ms/400ms), SOT-23-6, open-drain RST | Larger 6-pin package; requires external capacitor for POR timing; tighter threshold tolerance | Select when higher accuracy or programmable timeout justifies added component count and layout area |
Compared with MAX809TRD3-T and TPS3808G30DBVR, the ISL88002IH31Z-T7A delivers superior ultra-low-power operation (160nA vs. 2.5µA/1.5µA) and better threshold accuracy (±1.2% vs. ±2.5%/±0.5%) in the smallest possible 3-pin SOT-23 form factor - ideal for space- and energy-constrained designs where open-drain reset is acceptable.
Availability
ISL88002IH31Z-T7A is available at Aetrix Electronics and suitable for microcontroller power-up sequencing, battery-powered IoT sensor nodes, and industrial PLC I/O modules requiring stable component supply and long-term production continuity.
Supply support for ISL88002IH31Z-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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL8800x family was designed specifically for ultra-low-power voltage supervision in portable and battery-operated equipment, emphasizing nanoscale quiescent current, high threshold accuracy, and minimal board footprint.
FAQ
What is the exact reset threshold voltage of the ISL88002IH31Z-T7A and how tightly is it specified?
The ISL88002IH31Z-T7A has a nominal reset threshold of 3.07V, with a guaranteed accuracy of ±1.2% over the full industrial temperature range (-40°C to +85°C). This means the actual trip point falls between 3.03V and 3.11V at +25°C, and remains within ±1.2% of 3.07V across temperature - verified per FN6174 Rev 3.00 datasheet Table on page 8.
Does the ISL88002IH31Z-T7A require external components to operate, and what is the role of the RST pin?
No, the ISL88002IH31Z-T7A requires no external components for basic voltage supervision. Its RST pin is an open-drain active-low output that must be pulled up externally (5kΩ–100kΩ) to define the logic-high voltage level. This configuration allows interoperability with mixed-voltage systems (e.g., 1.8V MCU with 3.3V reset bus) without additional level shifters.
What is the minimum supply voltage at which the ISL88002IH31Z-T7A can assert a valid reset signal?
The ISL88002IH31Z-T7A guarantees valid reset assertion down to VDD = 1V, as confirmed in the datasheet Functional Description (page 1) and Absolute Maximum Ratings (page 8). This capability ensures reliable brownout detection even during deep discharge of lithium batteries or cold-start conditions in energy-harvesting systems.
How does the power-on reset (POR) timeout of the ISL88002IH31Z-T7A compare to industry standards, and what is its typical value?
The ISL88002IH31Z-T7A features a fixed 190ms power-on reset timeout, consistent with the datasheet's stated "190ms Power-On Reset Timeout" (page 1) and electrical specification tPOR = 140–260ms (page 9). This aligns with common MCU requirements for oscillator stabilization and register initialization, exceeding the 100ms minimum often seen in legacy supervisors while remaining compatible with most embedded firmware boot sequences.
Is the ISL88002IH31Z-T7A pin-compatible with other members of the ISL8800x family, and what package does it use?
Yes, the ISL88002IH31Z-T7A uses the same 3-lead SOT-23 package (P3.064) and identical pinout (GND–RST–VDD) as all ISL8800x variants with "H" suffix (e.g., ISL88001IH31Z-T7A, ISL88003IH31Z-T7A), enabling drop-in substitution where functional differences (push-pull vs. open-drain RST) are acceptable. The "H" denotes SOT-23 packaging, distinct from "E"-suffixed SC-70 versions.
ISL88002IH31Z-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- SOT-23-3
ISL88002IH31Z-T7A FAQ
1.How can I place an order for ISL88002IH31Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IH31Z-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 ISL88002IH31Z-T7A reliable?
The price and inventory of ISL88002IH31Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IH31Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88002IH31Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IH31Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IH31Z-T7A?
ISL88002IH31Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IH31Z-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 ISL88002IH31Z-T7A?
For technical support, including ISL88002IH31Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IH31Z-T7A requirements.
6.How does Aetrix verify that ISL88002IH31Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88002IH31Z-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 ISL88002IH31Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88002IH31Z-T7A?
All ISL88002IH31Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IH31Z-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 ISL88002IH31Z-T7A part is unused and in its original packaging.
Return procedure for ISL88002IH31Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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