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Renesas ISL88001IH31Z-T7A
- Part No.:
- ISL88001IH31Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ISL88001IH31Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,057
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Product details
Overview
ISL88001IH31Z-T7A from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with push-pull active-low reset output, 3.07V fixed threshold, ±1.2% accuracy, and 190ms power-on reset timeout. It monitors VDD supply voltage in microcontroller systems, portable equipment, and battery-powered devices where reliable brownout detection and minimal quiescent current are critical.
For engineers reviewing the ISL88001IH31Z-T7A datasheet, ISL88001IH31Z-T7A pinout, ISL88001IH31Z-T7A application, or ISL88001IH31Z-T7A equivalent, key selection criteria include its 160nA supply current at 1.8V–5.5V operation, reset validity down to VDD = 1V, immunity to supply transients, and compatibility with compact SOT-23 layouts.
Technical Context
The ISL88001IH31Z-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 for a guaranteed 140–260ms timeout after VDD exceeds the 3.07V trip point.
This device operates as a single-supply monitor with no external components required. The push-pull RST output drives directly into microcontroller reset inputs without pull-up resistors, simplifying design and reducing BOM count in space-constrained embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 160nA typical at VDD = 1.8V - enables multi-year battery life in always-on monitoring applications |
| Voltage Threshold | 3.07V nominal (±1.2% over -40°C to +85°C) - precisely matches 3.3V rail brownout detection requirements |
| POR Timeout | 190ms typical - ensures stable power-up of MCUs and FPGAs before release |
| Reset Validity Range | Down to VDD = 1V - guarantees reset assertion during deep undervoltage conditions |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and reduces board area |
| Operating Voltage | 1.8V to 5.5V - supports wide range of logic supplies including 1.8V, 2.5V, 3.3V, and 5V systems |
| Package | 3-lead SOT-23 - footprint compatible with industry-standard 2.92mm × 1.30mm PCB land pattern |
Pinout & Package
ISL88001IH31Z-T7A is housed in a Pb-free, RoHS-compliant 3-lead SOT-23 package (JEDEC TO-236), with 0.95mm lead pitch and 1.00mm body height. Thermal resistance θJA is 590°C/W.
| 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) | Active-low reset output | Push-pull driver that sinks current when asserted (LOW); directly interfaces MCU reset input without external components |
| 3 (VDD) | Supply and monitored input | Single pin serves dual role: powers the IC and provides the voltage being supervised; no separate sense pin required |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.07V threshold | Matches standard 3.3V supply rails with ±1.2% accuracy across industrial temperature range |
| 160nA supply current | Enables >10-year battery life in coin-cell-powered IoT sensors and wearables |
| 190ms POR timeout | Guarantees sufficient delay for oscillator stabilization and register initialization in low-power MCUs |
| No external components | Reduces BOM cost and PCB area by eliminating pull-up resistors, capacitors, or voltage dividers |
| Immunity to supply transients | Prevents false resets during switching noise or load-dump events in automotive and industrial environments |
Applications
| Microprocessor Power-Up Control | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Ensuring safe boot sequence for ARM Cortex-M microcontrollers in industrial gateways. IC Role / Device Role / Timing Role: Monitors 3.3V VDD rail and asserts active-low reset until voltage stabilizes above 3.07V for ≥190ms. Use Value: Prevents corrupted firmware execution due to premature clock enable or flash access during undervoltage. | Use Scenario: Long-life environmental sensor using CR2032 coin cell and ultra-low-power MCU. IC Role / Device Role / Timing Role: Supervises 3.0V regulated supply and triggers reset if battery drops below 3.07V threshold. Use Value: Extends operational lifetime by avoiding data corruption and EEPROM write errors during end-of-battery discharge. |
| Portable Medical Device | Smart Home Controller |
Use Scenario: Reliable power sequencing in handheld glucose meters with LCD and Bluetooth LE. IC Role / Device Role / Timing Role: Provides active-low reset signal to MCU and display controller during cold-start and brownout events. Use Value: Meets IEC 60601 safety requirement for deterministic reset behavior under low-voltage conditions. | Use Scenario: Reset coordination across Wi-Fi SoC, memory, and peripheral ICs in battery-backed smart thermostat. IC Role / Device Role / Timing Role: Single-point supervision of main 3.3V rail with push-pull RST driving multiple downstream reset inputs. Use Value: Eliminates timing skew between subsystem resets and avoids race conditions during power recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | 3.08V threshold, ±2.5% accuracy, 140ms POR, SOT-23 package | Higher threshold tolerance and shorter timeout reduce margin for marginal 3.3V supplies | Select when legacy MAXIM compatibility is required and tighter timing margins are acceptable |
| TPS3808G30DBVR | 3.0V threshold, ±0.5% accuracy, adjustable POR (200ms/400ms), higher 1.2µA IDD | Lower threshold and superior accuracy suit precision 3.0V systems; higher current limits battery life | Select when highest threshold accuracy is critical and supply current budget allows >7× increase |
Compared with MAX809TRD2+T and TPS3808G30DBVR, the ISL88001IH31Z-T7A delivers optimal balance of ultra-low 160nA current, tight ±1.2% threshold accuracy, and robust 190ms POR - making it ideal for long-duration, battery-critical 3.3V applications where both precision and energy efficiency are non-negotiable.
Availability
ISL88001IH31Z-T7A is available at Aetrix Electronics and suitable for microcontroller power-up control, battery-powered sensor nodes, portable medical devices, smart home controllers, and industrial embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL88001IH31Z-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 high-performance analog, mixed-signal, and embedded processing solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, engineered specifically for energy-constrained applications demanding sub-200nA operation, precise fixed thresholds, and minimal footprint in portable and battery-operated electronics.
FAQ
What is the exact voltage threshold and accuracy of the ISL88001IH31Z-T7A?
The ISL88001IH31Z-T7A has a nominal voltage threshold of 3.07V with ±1.2% accuracy over the full industrial temperature range (-40°C to +85°C). At +25°C, the typical trip point is 3.075V, with min/max bounds of 3.038V and 3.112V respectively. This precision enables reliable brownout detection on standard 3.3V power rails without calibration.
Does the ISL88001IH31Z-T7A require external components for operation?
No, the ISL88001IH31Z-T7A requires no external components. Its push-pull active-low RST output drives directly into microcontroller reset inputs without needing a pull-up resistor. The device integrates all necessary reference, comparator, and timing circuitry internally - reducing BOM count, PCB area, and design complexity compared to open-drain alternatives like the ISL88002.
What is the power-on reset timeout duration for the ISL88001IH31Z-T7A?
The ISL88001IH31Z-T7A features a typical power-on reset (POR) timeout of 190ms, with a guaranteed range of 140ms to 260ms over temperature. This timeout begins when VDD rises above 1V and ensures the reset signal remains asserted long enough for microcontroller oscillators to stabilize, internal registers to initialize, and FPGA configuration to complete before system operation resumes.
Can the ISL88001IH31Z-T7A operate down to 1.8V supply voltage?
Yes, the ISL88001IH31Z-T7A operates across a supply range of 1.8V to 5.5V. Its internal circuitry remains functional and the reset output remains valid even as VDD drops to 1V - well below the 1.8V minimum operating voltage. This extended validity range ensures robust brownout detection during deep undervoltage conditions common in battery discharge profiles.
Is the ISL88001IH31Z-T7A pin-compatible with other voltage supervisors?
The ISL88001IH31Z-T7A is pin-compatible with industry-standard 3-pin voltage supervisors including MAX803, MAX809, and MAX810 in SOT-23 packages. All share identical GND–RST–VDD pinout and push-pull active-low reset functionality. However, threshold voltage (3.07V vs. 3.08V/3.1V) and accuracy (±1.2% vs. ±2.5%) differ - verify compatibility with target MCU reset timing requirements before substitution.
ISL88001IH31Z-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.075V
- Output:
- Push-Pull, Totem Pole
- 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
ISL88001IH31Z-T7A FAQ
1.How can I place an order for ISL88001IH31Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IH31Z-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 ISL88001IH31Z-T7A reliable?
The price and inventory of ISL88001IH31Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IH31Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IH31Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IH31Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IH31Z-T7A?
ISL88001IH31Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IH31Z-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 ISL88001IH31Z-T7A?
For technical support, including ISL88001IH31Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IH31Z-T7A requirements.
6.How does Aetrix verify that ISL88001IH31Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IH31Z-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 ISL88001IH31Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IH31Z-T7A?
All ISL88001IH31Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IH31Z-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 ISL88001IH31Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IH31Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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