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Renesas ISL88003IE17Z-T
- Part No.:
- ISL88003IE17Z-T
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88003IE17Z-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,428
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Product details
Overview
ISL88003IE17Z-T from Renesas Electronics is an ultra-low-power 3-pin voltage supervisor IC with a fixed 1.67V reset threshold, ±1.2% accuracy, 190ms power-on reset timeout, and push-pull active-high RST output. It monitors VDD supply voltage in battery-powered microcontroller systems, portable instrumentation, and low-voltage embedded controllers where supply stability below 1.8V must be verified before system initialization.
For engineers reviewing the ISL88003IE17Z-T datasheet, ISL88003IE17Z-T pinout, ISL88003IE17Z-T application, or ISL88003IE17Z-T equivalent, key selection criteria include its 160nA supply current at 1.8V, reset validity down to VDD = 1V, SC-70 package footprint, and compatibility with 1.67V rail supervision in space-constrained industrial and portable designs.
Technical Context
The ISL88003IE17Z-T implements a precision bandgap-based voltage reference comparator with internal hysteresis (1%) to prevent noise-induced reset chatter during brownout conditions. Its POR circuit asserts RST at VDD = 1V and holds it until VDD exceeds 1.67V for ≥190ms, ensuring stable power-up sequencing for MCUs and FPGAs.
Unlike open-drain variants (e.g., ISL88002), the ISL88003IE17Z-T features a push-pull RST output that actively drives HIGH to VDD when not asserted and LOW to GND when reset is active-eliminating external pull-up resistors and reducing BOM count in low-noise, low-current applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.67V ±1.2% - precisely monitors 1.6–1.7V rails such as LiFePO₄ battery outputs or low-dropout regulator outputs. |
| Supply Current | 160nA at VDD = 1.8V - enables multi-year operation on coin-cell batteries without compromising supervision reliability. |
| POR Timeout | 190ms typical - ensures sufficient delay for oscillator stabilization and register initialization before MCU release. |
| Reset Validity Range | VDD ≥ 1V - guarantees functional reset assertion even during deep brownout or cold-start conditions. |
| Output Type | Push-pull active-high - eliminates need for external pull-up resistor and reduces signal rise time vs. open-drain alternatives. |
| Package | 3-lead SC-70 (P3.049) - 2.0 × 2.1 mm footprint ideal for wearables, sensor nodes, and compact PCB layouts. |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive cabin-adjacent environments. |
Pinout & Package
ISL88003IE17Z-T is housed in a Pb-free 3-lead SC-70 plastic package (JEDEC MO-203AA, Renesas pkg drawing P3.049), measuring 2.0 mm × 2.1 mm × 0.9 mm with gull-wing leads. The package supports reflow soldering per IPC/JEDEC J-STD-020 MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | IC ground reference; must be connected directly to system ground plane for accurate threshold sensing and noise immunity. |
| 2 | RST | Push-pull active-high reset output; drives HIGH to VDD when VDD ≥ 1.67V + hysteresis, LOW to GND when VDD < 1.67V. |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC bias and serves as the sensed rail - no external components required. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.67V threshold | Factory-trimmed for ±1.2% accuracy across -40°C to +85°C - eliminates calibration overhead in production test. |
| 160nA supply current | Enables >10-year battery life in always-on monitoring applications using CR2032 cells. |
| 190ms POR timeout | Guarantees reliable MCU hold-off during slow-ramp power supplies and low-ESR capacitor charging. |
| Reset valid down to 1V | Supports fail-safe shutdown in ultra-low-VDD scenarios where other supervisors lose functionality. |
| No external components | Reduces BOM cost and layout area by eliminating pull-ups, capacitors, or trimming resistors. |
Applications
| Microprocessor Power-Up Sequencing | Portable Medical Sensor Node |
|---|---|
Use Scenario: Ensuring safe boot of ARM Cortex-M0+ MCU after LiFePO₄ battery powers up from storage voltage (~1.9V). IC Role / Device Role / Timing Role: Voltage supervisor providing active-high reset signal synchronized to VDD ramp; POR timeout aligns with crystal oscillator startup. Use Value: Prevents code execution at unstable VDD levels, avoiding flash corruption and undefined peripheral states. | Use Scenario: Supervising 1.67V LDO output powering an ultra-low-power ECG analog front-end and BLE SoC. IC Role / Device Role / Timing Role: Monitors LDO output rail and asserts reset if VDD drops below 1.67V due to battery sag or load transients. Use Value: Enables deterministic recovery from brownout without firmware intervention, preserving data integrity during intermittent power loss. |
| Industrial PLC I/O Module | Smart Energy Meter ASIC Power Control |
Use Scenario: Verifying stable 1.8V auxiliary rail before enabling isolated CAN transceiver and ADC interface. IC Role / Device Role / Timing Role: Single-supply monitor with push-pull RST driving enable logic for downstream power domains. Use Value: Eliminates need for level-shifting or pull-up networks, simplifying isolation boundary design and reducing component count. | Use Scenario: Controlling power-up sequence of metrology ASIC and real-time clock (RTC) from shared 1.67V backup rail. IC Role / Device Role / Timing Role: Supervisor asserting reset to both ASIC and RTC until VDD stabilizes above 1.67V for ≥190ms. Use Value: Guarantees synchronized initialization and prevents metastability in time-critical metering functions. |
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 | 1.63V threshold, ±2.5% accuracy, 140ms POR, SOT-23-3 package, open-drain RST | Requires external pull-up resistor; lower accuracy increases risk of false resets near threshold | Select when legacy MAX809 footprint compatibility is mandatory and 1.63V trip point suffices. |
| TPS3801K33DBVR | 3.3V threshold (not 1.67V); 1.5µA quiescent current; SOT-23-3; push-pull RST | Not suitable for sub-1.8V rails; higher current invalidates battery-life claims | Choose only if supervising 3.3V domain and TI ecosystem integration is prioritized over ultra-low IQ. |
Compared with MAX809SEUR+T and TPS3801K33DBVR, the ISL88003IE17Z-T delivers tighter threshold accuracy, lower supply current, and native 1.67V support - making it uniquely suited for next-generation low-voltage, long-life embedded systems where precision and efficiency are non-negotiable.
Availability
ISL88003IE17Z-T is available at Aetrix Electronics and suitable for microcontroller power-up sequencing, portable medical sensor nodes, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for ISL88003IE17Z-T 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, low-power microcontrollers, analog, and power management solutions for automotive, industrial, and IoT markets.
The ISL88003IE17Z-T belongs to Renesas' Ultra Low Power Voltage Supervisor family, designed specifically for reliable, zero-calibration power monitoring in battery-operated and space-constrained embedded systems operating down to 1V.
FAQ
What is the exact reset threshold voltage of the ISL88003IE17Z-T?
The ISL88003IE17Z-T has a nominal reset threshold voltage of 1.67V, with guaranteed accuracy of ±1.2% over the full industrial temperature range (-40°C to +85°C). At +25°C, the measured threshold falls between 1.650V and 1.690V, and across temperature it remains within 1.625V to 1.715V per datasheet FN6174 Rev 3.00.
Does the ISL88003IE17Z-T require any external components to operate?
No, the ISL88003IE17Z-T requires no external components. Its push-pull active-high RST output eliminates the need for a pull-up resistor, and its internal voltage reference and hysteresis are factory-trimmed - enabling direct connection to VDD, GND, and the host MCU's reset input without additional passives.
What is the minimum supply voltage at which the ISL88003IE17Z-T can assert a valid reset signal?
The ISL88003IE17Z-T asserts a valid reset signal down to VDD = 1V, as confirmed in the Functional Block Diagram and Electrical Specifications section of FN6174. This allows reliable brownout detection even when the monitored rail collapses deeply, far below its 1.67V trip point.
How does the ISL88003IE17Z-T differ from the ISL88001IE17Z-T and ISL88002IE17Z-T?
The ISL88003IE17Z-T differs in output configuration: it provides a push-pull active-high RST, whereas ISL88001IE17Z-T is also push-pull but active-low, and ISL88002IE17Z-T uses an open-drain active-low RST requiring an external pull-up. All three share identical 1.67V threshold, 160nA IQ, and SC-70 packaging.
Is the ISL88003IE17Z-T pin-compatible with industry-standard voltage supervisors like MAX809?
No, the ISL88003IE17Z-T is not pin-compatible with MAX809. While the datasheet notes pin compatibility with MAX803/MAX809/MAX810 *within the ISL8800x family*, the ISL88003IE17Z-T uses a different pinout: Pin 2 is RST (active-high push-pull), whereas MAX809 places active-low RST on Pin 3. Direct substitution would cause incorrect reset polarity and system failure.
ISL88003IE17Z-T 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 High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
ISL88003IE17Z-T FAQ
1.How can I place an order for ISL88003IE17Z-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88003IE17Z-T 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 ISL88003IE17Z-T reliable?
The price and inventory of ISL88003IE17Z-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88003IE17Z-T is usually 5 days.
3.What payment methods are accepted for ISL88003IE17Z-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88003IE17Z-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88003IE17Z-T?
ISL88003IE17Z-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88003IE17Z-T 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 ISL88003IE17Z-T?
For technical support, including ISL88003IE17Z-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88003IE17Z-T requirements.
6.How does Aetrix verify that ISL88003IE17Z-T is sourced from the original manufacturer or authorized distributors?
All ISL88003IE17Z-T 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 ISL88003IE17Z-T meets industry standards.
7.What is the process for return or replacement of ISL88003IE17Z-T?
All ISL88003IE17Z-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL88003IE17Z-T, 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 ISL88003IE17Z-T part is unused and in its original packaging.
Return procedure for ISL88003IE17Z-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL88003IE17Z-T Tags
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MIC826SYMT-TR
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