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Renesas ISL88001IE31Z-TK
- Part No.:
- ISL88001IE31Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88001IE31Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:276
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Product details
Overview
ISL88001IE31Z-TK from Renesas is an ultra-low-power 3-pin voltage supervisor IC with a fixed 3.07V reset threshold, 160nA supply current, ±1.2% threshold accuracy, and 190ms power-on reset timeout. It provides active-low push-pull reset output and operates down to VDD = 1V, serving as a system-level power monitor and POR generator in microcontroller-based portable electronics.
For engineers reviewing the ISL88001IE31Z-TK datasheet, ISL88001IE31Z-TK pinout, ISL88001IE31Z-TK application, or ISL88001IE31Z-TK equivalent, key selection criteria include trip-point precision, sub-200ms POR delay, SC-70 package footprint, 1V minimum operating voltage, and compatibility with battery-powered microprocessor reset sequencing.
Technical Context
The ISL88001IE31Z-TK implements a factory-trimmed bandgap reference and comparator architecture to detect falling VDD below its 3.07V nominal threshold with 1% hysteresis. Its internal POR circuit asserts reset at VDD ≥ 1V and holds it for 190ms after VDD exceeds the trip point.
This device integrates no external components, features immunity to supply transients, and delivers deterministic reset timing across -40°C to +85°C. The push-pull RST output drives directly into µP reset inputs without pull-up resistors, simplifying BOM and layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.07V ±1.2% (ensures reliable detection of 3.3V rail brownout before system malfunction) |
| Supply Current | 160nA typical at 1.8V (enables multi-year battery life in always-on monitoring applications) |
| POR Timeout | 190ms nominal (guarantees sufficient stabilization time for MCU oscillator and register initialization) |
| Operating Voltage Range | 1.8V to 5.5V input; reset valid down to VDD = 1V (supports deep brownout detection during shutdown) |
| Output Type | Active-low push-pull RST (eliminates need for external pull-up resistor; sinks 0.5mA at 0.4V max VOL) |
| Package | 3-lead SC-70 (1.8 × 1.2 × 0.9mm footprint; compatible with high-density portable PCB layouts) |
| Temperature Range | -40°C to +85°C industrial grade (validated for embedded control and handheld equipment environments) |
Pinout & Package
ISL88001IE31Z-TK is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, Renesas pkg drawing P3.049), with 0.65mm lead pitch and 1.8 × 1.2mm body size.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset logic; must be low-impedance connection to system ground plane |
| 2 | RST | Active-low push-pull reset output; drives LOW during power-on or brownout; no external pull-up required |
| 3 | VDD | Power supply input and monitored voltage source; supplies IC bias and serves as threshold reference input |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.07V trip point | Factory-trimmed for ±1.2% accuracy - eliminates calibration overhead and supports 3.3V rail supervision without external dividers |
| 160nA supply current | Enables >10-year battery operation in coin-cell–powered IoT sensors and wearables with continuous monitoring |
| 190ms POR timeout | Guarantees stable clock startup and register loading in ARM Cortex-M0/M3 microcontrollers before release |
| 1V minimum reset validity | Ensures fail-safe reset assertion even during deep discharge of Li-ion or alkaline batteries |
| SC-70 package | Reduces board area by >40% vs. SOT-23; enables placement near µP reset pins to minimize noise coupling |
Applications
| Microprocessor Power Sequencing | Portable Medical Sensors |
|---|---|
Use Scenario: Ensuring safe boot of an ARM-based patient monitor after battery insertion or wake-from-sleep. IC Role / Device Role / Timing Role: Voltage supervisor providing POR and brownout reset to the MCU's nRESET pin. Use Value: 190ms timeout aligns with typical crystal oscillator startup; 3.07V threshold prevents operation below 3.3V rail specification. |
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable reset across 2.0–3.0V battery discharge curve. IC Role / Device Role / Timing Role: Low-current supervisor asserting reset when battery drops below 3.07V and holding until recharge. Use Value: 160nA quiescent current extends usable battery life beyond 3 years; 1V reset validity ensures safety during final discharge phase. |
| Industrial PLC I/O Modules | Handheld Test Equipment |
Use Scenario: Protecting FPGA configuration and analog front-end initialization in a DIN-rail mounted sensor interface module. IC Role / Device Role / Timing Role: Supervisory IC generating synchronized reset pulse to FPGA and ADC after 24V DC-DC output stabilizes. Use Value: Immunity to supply transients prevents spurious resets during relay switching; SC-70 footprint saves space on dense I/O carrier boards. |
Use Scenario: Enabling instant-on behavior in a battery-powered multimeter with LCD and Bluetooth LE radio. IC Role / Device Role / Timing Role: Reset controller that releases µP only after regulated 3.3V rail reaches 3.07V and remains stable for 190ms. Use Value: Push-pull RST eliminates external resistor, reducing component count and improving ESD robustness on compact handheld PCBs. |
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 | 3.08V threshold, ±2% accuracy, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits battery lifetime; larger package increases board area | Select when legacy MAX809 footprint compatibility is required and power budget allows >7× higher IDD |
| TPS3801K33DBVR | 3.3V threshold, ±0.5% accuracy, 1.8µA supply current, SOT-23-3 package | Higher trip point mismatches 3.3V rail tolerance; not suitable for systems requiring reset at 3.07V | Choose only if system design permits tighter 3.3V supervision and accepts 11× higher supply current |
Compared with MAX809SEUR+T and TPS3801K33DBVR, the ISL88001IE31Z-TK delivers superior energy efficiency and precise 3.07V trip-point matching for 3.3V rail supervision, while its SC-70 package enables denser layouts in space-constrained portable designs.
Availability
ISL88001IE31Z-TK is available at Aetrix Electronics and suitable for microcontroller reset sequencing, portable medical devices, and industrial sensor modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL88001IE31Z-TK 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 ISL88001IE31Z-TK belongs to Renesas' Ultra Low Power Voltage Supervisor family, engineered specifically for battery-critical applications where nanoscale current draw and precise reset thresholds ensure system reliability without compromising runtime.
FAQ
What is the exact reset threshold voltage of the ISL88001IE31Z-TK?
The ISL88001IE31Z-TK has a nominal reset threshold of 3.07V, with guaranteed accuracy of ±1.2% over the full -40°C to +85°C temperature range. At +25°C, the typical trip point is 3.075V, bounded between 3.038V (min) and 3.112V (max), as specified in the FN6174 datasheet Electrical Specifications table.
Does the ISL88001IE31Z-TK require an external pull-up resistor on the RST pin?
No, the ISL88001IE31Z-TK features a push-pull RST output and does not require an external pull-up resistor. Its active-low RST pin drives LOW during reset assertion and actively pulls HIGH (to VDD) when released, enabling direct connection to standard µP nRESET inputs without additional components.
What is the minimum supply voltage at which the ISL88001IE31Z-TK can assert a valid reset signal?
The ISL88001IE31Z-TK asserts a valid reset signal down to VDD = 1V, as confirmed in the datasheet Functional Description and Absolute Maximum Ratings sections. This ensures fail-safe reset generation even during deep battery discharge or severe brownout conditions.
Is the ISL88001IE31Z-TK pin-compatible with other members of the ISL8800x family?
Yes, the ISL88001IE31Z-TK shares identical 3-lead SC-70 pinout and terminal functions (GND, RST, VDD) with all ISL88001/002/003 variants in SC-70 and SOT-23 packages. However, ISL88002 uses open-drain RST and ISL88003 uses active-high push-pull RST - only ISL88001 variants match the ISL88001IE31Z-TK's active-low push-pull behavior.
What is the power-on reset timeout duration for the ISL88001IE31Z-TK?
The ISL88001IE31Z-TK provides a nominal power-on reset timeout of 190ms, with a guaranteed range of 140ms to 260ms across temperature and process variation. This delay begins when VDD rises above 1V and ensures sufficient time for microprocessor oscillator stabilization and register initialization before reset release.
ISL88001IE31Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- 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:
- 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
ISL88001IE31Z-TK FAQ
1.How can I place an order for ISL88001IE31Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IE31Z-TK 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 ISL88001IE31Z-TK reliable?
The price and inventory of ISL88001IE31Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IE31Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88001IE31Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IE31Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IE31Z-TK?
ISL88001IE31Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IE31Z-TK 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 ISL88001IE31Z-TK?
For technical support, including ISL88001IE31Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IE31Z-TK requirements.
6.How does Aetrix verify that ISL88001IE31Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88001IE31Z-TK 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 ISL88001IE31Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88001IE31Z-TK?
All ISL88001IE31Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IE31Z-TK, 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 ISL88001IE31Z-TK part is unused and in its original packaging.
Return procedure for ISL88001IE31Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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