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Renesas ISL88001IE17Z-T7A
- Part No.:
- ISL88001IE17Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88001IE17Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,564
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Product details
Overview
ISL88001IE17Z-T7A from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with a fixed 1.67V reset threshold, 160nA supply current, ±1.2% threshold accuracy, and 190ms power-on reset timeout. It monitors VDD in battery-powered microcontroller systems and asserts a push-pull active-low reset signal down to 1V supply.
For engineers reviewing the ISL88001IE17Z-T7A datasheet, ISL88001IE17Z-T7A pinout, ISL88001IE17Z-T7A application, or ISL88001IE17Z-T7A equivalent, key selection criteria include trip point tolerance, reset assertion validity at low VDD, package footprint (SC-70), and compatibility with legacy supervisory circuits requiring minimal external components.
Technical Context
The ISL88001IE17Z-T7A implements a precision bandgap-based voltage reference with internal hysteresis to prevent noise-induced reset chatter. Its POR circuit asserts reset as soon as VDD reaches 1V and holds it for ≥140ms until VDD exceeds 1.67V and remains stable.
This device operates exclusively in monitoring mode: VDD serves as both power supply and monitored input; the RST output is push-pull active-low with VOL ≤ 0.4V at 0.5mA sink and VOH ≥ VDD − 0.4V when deasserted. No configuration pins or external timing components are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.67V ±1.2% - precisely monitors 1.8V rail brownout without external resistor divider |
| Supply Current | 160nA typical at 1.8V - enables multi-year operation on coin-cell batteries |
| POR Timeout | 190ms nominal - ensures microcontroller initialization completes before release |
| Valid Reset Range | RST functional down to VDD = 1V - guarantees reset assertion during deep brownout |
| Output Type | Push-pull active-low - drives reset line directly without external pull-up resistor |
| Operating Temp | −40°C to +85°C - qualified for industrial ambient environments |
| Package | 3-lead SC-70 (P3.049) - 1.8 × 1.2 × 0.9mm footprint saves PCB area vs SOT-23 |
Pinout & Package
ISL88001IE17Z-T7A is housed in a Pb-free 3-lead SC-70 package (JEDEC MO-203AA, drawing P3.049), measuring 1.8mm × 1.2mm × 0.9mm with 0.65mm lead pitch. The top-view pinout is standardized across ISL88001 variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset driver; must be low-impedance connection |
| 2 | RST | Active-low push-pull reset output; sinks up to 10mA, no external pull-up needed |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC and provides threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.67V threshold | Enables direct supervision of 1.8V logic rails without trimming or calibration |
| 160nA supply current | Reduces quiescent power by >90% vs legacy supervisors, extending battery life |
| ±1.2% threshold accuracy | Eliminates need for margining in low-voltage system design |
| 190ms POR timeout | Guarantees sufficient time for oscillator stabilization and register loading |
| No external components | Reduces BOM count and layout complexity; supports single-component reset solution |
Applications
| Microprocessor Power-Up Control | Portable Medical Sensor Node |
|---|---|
Use Scenario: Ensuring reliable boot sequence for ARM Cortex-M0+ MCU powered from a 1.8V LDO. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection on the 1.8V rail. Use Value: Prevents illegal instruction execution during undervoltage by holding RESET asserted until VDD ≥ 1.67V for 190ms. | Use Scenario: Supervising a wearable ECG sensor with CR2032 battery and ultra-low-power sleep mode. IC Role / Device Role / Timing Role: Monitoring VDD decay during battery discharge to trigger graceful shutdown before data corruption. Use Value: 160nA quiescent current extends operational lifetime; reset valid down to 1V allows full battery utilization. |
| Industrial PLC I/O Module | Smart Meter Real-Time Clock Backup |
Use Scenario: Protecting FPGA configuration integrity in a DIN-rail mounted controller exposed to 12V rail transients. IC Role / Device Role / Timing Role: Immune-to-transient voltage supervisor asserting reset during 1.8V domain instability. Use Value: Internal hysteresis and transient immunity prevent spurious resets during switching noise events on shared power rails. | Use Scenario: Maintaining RTC functionality during main power loss using supercapacitor backup. IC Role / Device Role / Timing Role: Detecting 1.8V backup rail collapse to initiate clock freeze and memory save routines. Use Value: Fixed 1.67V threshold aligns with supercap end-of-life voltage; push-pull output drives RTC reset pin directly. |
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 | 1.68V threshold, ±2.5% accuracy, 2.5µA supply current, SOT-23-3 package | Higher quiescent current limits battery life; less accurate threshold requires design margin | Select when legacy MAX809 footprint compatibility is mandatory and power budget permits higher IDD |
| TPS3801K33DBVR | 3.3V threshold (not 1.67V), 1.6µA supply current, open-drain output, SOT-23-3 | Incorrect trip point for 1.8V rail; requires external pull-up; not drop-in replaceable | Use only if redesigning for 3.3V supervision and open-drain interface is acceptable |
Compared with MAX809SEUR+T and TPS3801K33DBVR, the ISL88001IE17Z-T7A delivers superior energy efficiency and tighter threshold accuracy for 1.8V systems, but requires SC-70 layout adaptation and lacks pin compatibility with MAX809 family.
Availability
ISL88001IE17Z-T7A is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC modules, smart meter backup systems, and battery-powered IoT edge nodes requiring stable component supply and long-term manufacturability.
Supply support for ISL88001IE17Z-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, and IoT markets.
The ISL88001 series belongs to Renesas' ultra-low-power voltage supervisor product line, designed specifically for space-constrained, battery-operated systems requiring precise, low-quiescent-current power monitoring.
FAQ
What is the exact reset threshold voltage of the ISL88001IE17Z-T7A and how tightly is it specified?
The ISL88001IE17Z-T7A has a nominal reset threshold of 1.67V with guaranteed accuracy of ±1.2% over −40°C to +85°C. At +25°C, the typical value is 1.670V, with min/max bounds of 1.650V and 1.690V. This tight tolerance eliminates need for external calibration in 1.8V rail supervision.
Does the ISL88001IE17Z-T7A require any external components to operate?
No, the ISL88001IE17Z-T7A requires zero external components. Its push-pull RST output drives the reset line directly, and the internal voltage reference and POR timer are fully integrated. Only VDD, GND, and the RST load (e.g., µC reset pin) are needed - no pull-up resistors, capacitors, or dividers.
Can the ISL88001IE17Z-T7A assert reset when VDD drops below 1.67V and still function at low supply voltages?
Yes. The ISL88001IE17Z-T7A asserts reset when VDD falls below 1.67V and maintains valid RST output down to VDD = 1V. Its internal circuitry remains functional and the push-pull driver sustains VOL ≤ 0.4V even at 1V supply, enabling robust brownout detection in deeply discharged battery scenarios.
What is the power-on reset timeout duration for the ISL88001IE17Z-T7A and is it adjustable?
The ISL88001IE17Z-T7A features a fixed 190ms power-on reset timeout (tPOR), with min/typ/max values of 140ms/190ms/260ms. This delay is internally generated and non-adjustable - it ensures sufficient time for oscillator stabilization and microcontroller register initialization without external timing components.
Is the ISL88001IE17Z-T7A pin-compatible with the MAX809 series, and what are the key layout considerations?
The ISL88001IE17Z-T7A is functionally compatible with MAX809 but not pin-compatible: it uses SC-70 (P3.049) while MAX809 uses SOT-23-3. Pin functions (GND-RST-VDD) match, but SC-70's smaller 1.8×1.2mm footprint and 0.65mm pitch require updated land pattern. Thermal resistance (θJA = 640°C/W) also differs from SOT-23.
ISL88001IE17Z-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:
- 1.67V
- 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
ISL88001IE17Z-T7A FAQ
1.How can I place an order for ISL88001IE17Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IE17Z-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 ISL88001IE17Z-T7A reliable?
The price and inventory of ISL88001IE17Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IE17Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IE17Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IE17Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IE17Z-T7A?
ISL88001IE17Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IE17Z-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 ISL88001IE17Z-T7A?
For technical support, including ISL88001IE17Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IE17Z-T7A requirements.
6.How does Aetrix verify that ISL88001IE17Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IE17Z-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 ISL88001IE17Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IE17Z-T7A?
All ISL88001IE17Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IE17Z-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 ISL88001IE17Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IE17Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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