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Renesas ISL88001IE46Z-T7A
- Part No.:
- ISL88001IE46Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88001IE46Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,954
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Product details
Overview
ISL88001IE46Z-T7A from Renesas is an ultra-low-power 3-lead voltage supervisor IC with 4.62V fixed reset threshold, 160nA supply current, ±1.2% threshold accuracy, and 190ms power-on reset timeout. It monitors VDD in microcontroller systems and portable equipment, asserting a push-pull active-low reset signal when supply drops below threshold or during power-up.
For engineers reviewing the ISL88001IE46Z-T7A datasheet, ISL88001IE46Z-T7A pinout, ISL88001IE46Z-T7A application, or ISL88001IE46Z-T7A equivalent, key selection criteria include trip point tolerance, reset assertion behavior under brownout, minimum operating voltage (1V), and compatibility with SC-70 footprint constraints in space-constrained designs.
Technical Context
The ISL88001IE46Z-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 4.62V for ≥190ms, ensuring stable initialization of microcontrollers before firmware execution.
As a member of the ISL88001 family, this variant uses factory-programmed trip point logic and requires no external components. The push-pull RST output drives directly into µP reset inputs without pull-up resistors, distinguishing it from open-drain ISL88002 variants and enabling deterministic low-impedance reset signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62V ±1.2% - ensures reliable detection of 5V rail brownout before critical logic fails. |
| Supply Current | 160nA typical - enables multi-year battery life in always-on monitoring applications. |
| POR Timeout | 190ms - guarantees sufficient stabilization time for microcontroller oscillators and internal registers. |
| Min Operating Voltage | 1V - allows reset assertion even during deep brownout conditions where core logic may still be functional. |
| Output Type | Push-pull active-low - eliminates need for external pull-up resistor and provides fast, low-impedance reset deassertion. |
| Package | 3-lead SC-70 - occupies 1.8 mm² board area, suitable for wearables and compact IoT nodes. |
| Temp Range | -40°C to +85°C - supports industrial and automotive cabin ambient environments. |
Pinout & Package
ISL88001IE46Z-T7A is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, Renesas pkg drawing P3.049), measuring 2.2mm × 1.35mm × 0.95mm with 0.65mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | IC ground reference - must be connected to system ground plane with low-inductance path to minimize noise coupling. |
| 2 | RST | Active-low push-pull reset output - sinks current when asserted (LOW), sources current when deasserted (HIGH); directly interfaces µP reset pin. |
| 3 | VDD | Power supply input and monitored voltage - supplies IC bias and serves as analog input to internal threshold comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 4.62V threshold | Matches standard 5V rail supervision requirements without trimming or calibration. |
| 160nA supply current | Reduces quiescent power draw by >90% versus legacy supervisors, extending battery runtime. |
| ±1.2% threshold accuracy | Eliminates need for margining in design, enabling tighter supply tolerance budgets. |
| 190ms POR timeout | Guarantees oscillator startup and register initialization before release of processor reset. |
| No external components | Reduces BOM count and PCB area; simplifies layout and qualification testing. |
Applications
| Microprocessor Power-Up Sequencing | Battery-Powered Sensor Node Supervision |
|---|---|
Use Scenario: Ensuring clean boot of ARM Cortex-M0+ MCU after cold start or wake-from-hibernate. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection on main 3.3V/5V rail. Use Value: 190ms POR timeout aligns with typical crystal oscillator stabilization time; 1V min operating voltage prevents false release during weak battery conditions. | Use Scenario: Maintaining reliable operation of LoRaWAN end-node during intermittent solar charging cycles. IC Role / Device Role / Timing Role: Monitoring Li-ion cell voltage (via resistive divider) to trigger graceful shutdown before deep discharge. Use Value: 160nA quiescent current minimizes self-discharge impact; ±1.2% accuracy enables precise low-voltage cutoff at 3.0V ±36mV. |
| Industrial PLC I/O Module Reset Control | Medical Wearable Low-Voltage Safety Monitor |
Use Scenario: Preventing erratic behavior in 24V-powered digital I/O modules during AC line sags. IC Role / Device Role / Timing Role: Supervising regulated 5V auxiliary supply that powers FPGA configuration and communication ICs. Use Value: Immunity to power-supply transients avoids spurious resets during relay switching; -40°C to +85°C rating covers extended industrial temperature range. | Use Scenario: Enforcing safe shutdown of ECG front-end ASIC when coin-cell voltage falls below 1.8V. IC Role / Device Role / Timing Role: Direct monitoring of 1.58V–2.32V battery rails using factory-trimmed ISL88001 variants (e.g., ISL88001IE22Z). Use Value: Push-pull RST output ensures immediate, low-impedance reset assertion without external pull-up-critical for fail-safe medical device response. |
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, 2.5µA supply current, SOT-23-3 package | Higher quiescent current limits battery life; wider threshold tolerance requires larger design margin | Select when legacy MAX809 footprint compatibility is required and higher IDD is acceptable |
| TPS3808G33DBVR | 3.3V threshold (not 4.62V), 1.8µA supply current, adjustable delay option, SOT-23-6 package | Incorrect trip point for 5V rail supervision; larger package and different pinout require PCB redesign | Select only if redesigning for 3.3V domain or requiring programmable timeout |
Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88001IE46Z-T7A delivers superior battery efficiency (160nA vs µA-range), tighter threshold accuracy (±1.2% vs ±2.5%), and direct 4.62V trip point alignment-making it optimal for space- and power-constrained 5V system supervision without layout changes.
Availability
ISL88001IE46Z-T7A is available at Aetrix Electronics and suitable for microcontroller power sequencing, battery-powered sensor nodes, and industrial I/O module reset control requiring stable component supply across long production lifecycles.
Supply support for ISL88001IE46Z-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 microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88001 family was designed specifically for ultra-low-power voltage supervision in portable and battery-operated systems, emphasizing nanoscale quiescent current, high threshold accuracy, and minimal board footprint.
FAQ
What is the exact reset threshold voltage of the ISL88001IE46Z-T7A and how tightly is it specified?
The ISL88001IE46Z-T7A has a nominal reset threshold voltage of 4.62V, with guaranteed accuracy of ±1.2% over the full -40°C to +85°C temperature range. This corresponds to a worst-case trip window of 4.50V to 4.75V, enabling precise supervision of 5V power rails without additional margining. The value is factory-programmed and does not require external calibration.
Does the ISL88001IE46Z-T7A require any external components to operate?
No, the ISL88001IE46Z-T7A operates autonomously with no external components required. Its push-pull 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, simplifying design and reducing BOM cost.
What is the minimum supply voltage at which the ISL88001IE46Z-T7A can assert reset?
The ISL88001IE46Z-T7A asserts reset down to VDD = 1V, ensuring reliable brownout detection even during severe undervoltage conditions where other supervisors may fail to respond. This capability is critical for fail-safe shutdown in battery-powered devices approaching end-of-life voltage.
How does the power-on reset timeout of the ISL88001IE46Z-T7A compare to industry standards?
The ISL88001IE46Z-T7A provides a fixed 190ms power-on reset timeout, falling within the common 140–260ms range specified in its datasheet. This duration is optimized to exceed typical crystal oscillator startup times (100–150ms) while remaining compatible with microcontroller reset timing requirements, eliminating need for external RC timing networks.
Is the ISL88001IE46Z-T7A pin-compatible with other members of the ISL8800x family?
Yes, the ISL88001IE46Z-T7A shares identical 3-lead SC-70 pinout and footprint with all ISL88001, ISL88002, and ISL88003 variants-including ISL88001IE44Z-T7A (4.38V), ISL88002IE46Z-T7A (open-drain), and ISL88003IE46Z-T7A (active-high). This enables drop-in replacement across trip points and output configurations without PCB modification.
ISL88001IE46Z-T7A 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:
- 4.625V
- 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:
- SC-70-3
ISL88001IE46Z-T7A FAQ
1.How can I place an order for ISL88001IE46Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IE46Z-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 ISL88001IE46Z-T7A reliable?
The price and inventory of ISL88001IE46Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IE46Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IE46Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IE46Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IE46Z-T7A?
ISL88001IE46Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IE46Z-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 ISL88001IE46Z-T7A?
For technical support, including ISL88001IE46Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IE46Z-T7A requirements.
6.How does Aetrix verify that ISL88001IE46Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IE46Z-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 ISL88001IE46Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IE46Z-T7A?
All ISL88001IE46Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IE46Z-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 ISL88001IE46Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IE46Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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