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Renesas ISL88002IE44Z-TK
- Part No.:
- ISL88002IE44Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88002IE44Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,848
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Product details
Overview
ISL88002IE44Z-TK from Renesas is an ultra-low-power open-drain voltage supervisor IC in a 3-lead SC-70 package, featuring a 4.38V nominal reset threshold, ±1.2% accuracy, 160nA supply current, and 190ms power-on reset timeout. It monitors VDD supply voltage and asserts an active-low reset signal to microprocessors during brownout or power-up conditions.
For engineers reviewing the ISL88002IE44Z-TK datasheet, ISL88002IE44Z-TK pinout, ISL88002IE44Z-TK application, or ISL88002IE44Z-TK equivalent, key selection considerations include its open-drain RST output requiring external pull-up, 1V minimum valid reset operation, immunity to supply transients, and compatibility with battery-powered and space-constrained embedded systems.
Technical Context
The ISL88002IE44Z-TK implements a precision bandgap-based voltage reference comparator with hysteresis to prevent noise-induced reset chatter. Its internal POR circuit triggers reset assertion at VDD = 1V and holds RST low until VDD exceeds 4.38V for ≥190ms.
As an open-drain supervisor, it sinks current on RST when asserted (LOW), requiring an external pull-up resistor (5kΩ–100kΩ) to define the high-state voltage level. It operates across -40°C to +85°C with no external components needed beyond that pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal, ±1.2% accuracy ensures reliable detection of 4.38V supply drops without false resets. |
| Supply Current | 160nA typical at 1.8V enables multi-year battery life in portable devices. |
| POR Timeout | 190ms minimum delay guarantees stable power before releasing reset to MCU. |
| Valid Reset Range | RST remains functional down to VDD = 1V, supporting deep brownout detection. |
| Output Type | Open-drain RST requires external pull-up; supports wired-OR configurations and level shifting. |
| Operating Temp | -40°C to +85°C industrial range suits automotive infotainment, industrial sensors, and medical wearables. |
| Package | 3-lead SC-70 (P3.049), 1.8mm × 2.2mm footprint saves PCB area vs. SOT-23. |
Pinout & Package
ISL88002IE44Z-TK is housed in a Pb-free 3-lead SC-70 plastic package (JEDEC MO-203AA, Renesas pkg drawing P3.049), measuring 1.8mm × 2.2mm × 0.95mm with gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and reset logic; must be connected to system ground plane. |
| 2 | RST | Open-drain active-low reset output; sinks current when asserted; requires external pull-up resistor (5kΩ–100kΩ). |
| 3 | VDD | Power supply input and monitored voltage source; supplies IC and provides input to threshold comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 160nA enables >10-year battery life in coin-cell-powered IoT endpoints. |
| High threshold accuracy | ±1.2% over temperature eliminates need for calibration in production test. |
| No external components | Operates with only one external pull-up resistor-reduces BOM count and layout complexity. |
| Transient immunity | Immune to fast supply glitches, preventing spurious resets in noisy industrial environments. |
| Pb-free & RoHS compliant | NiPdAu e4 termination supports both SnPb and lead-free reflow profiles per J-STD-020 MSL3. |
Applications
| Microprocessor Power-Up Sequencing | Battery-Powered Sensor Nodes |
|---|---|
Use Scenario: Ensuring clean boot of ARM Cortex-M microcontrollers after cold start or wake-from-sleep. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout detection on VDD rail. Use Value: 190ms POR timeout aligns with typical MCU oscillator stabilization time; 1V reset validity covers deep discharge scenarios. |
Use Scenario: Long-life environmental monitoring nodes powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Low-power supervisor enabling >5-year operation while detecting supply sag below 4.38V. Use Value: 160nA supply current minimizes battery drain; open-drain RST allows shared reset bus across multiple sensors. |
| Industrial PLC I/O Modules | Medical Wearable Devices |
Use Scenario: Protecting programmable logic controllers from erratic behavior during AC/DC converter ripple or line sags. IC Role / Device Role / Timing Role: Immune voltage monitor asserting reset during transient dips on 5V or 3.3V rails. Use Value: ±1.2% threshold accuracy ensures consistent trip point across temperature; SC-70 footprint fits dense I/O board layouts. |
Use Scenario: Heart rate monitors and glucose meters requiring guaranteed reset on battery insertion or low-voltage warning. IC Role / Device Role / Timing Role: Supervisory IC generating reset pulse when VDD falls below 4.38V during battery depletion. Use Value: Valid RST operation down to 1V supports full battery discharge profiling; RoHS/NiPdAu finish meets medical regulatory requirements. |
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, 1.2µA supply current, SOT-23-3 package. | Higher quiescent current limits battery life; less accurate threshold reduces margin in tight supply designs. | Choose MAX809SEUR+T only if legacy design reuse or SOT-23 footprint is mandatory and 4.63V trip point suffices. |
| TPS3808G33DBVR | 3.3V threshold, adjustable delay, 1.8µA supply current, SC-70-5 package with manual reset input. | Different threshold (3.3V vs. 4.38V); larger 5-pin package; higher current invalidates ultra-low-power use cases. | Use TPS3808G33DBVR only when 3.3V supervision is required and manual reset functionality justifies added pins and current. |
Compared with MAX809SEUR+T and TPS3808G33DBVR, the ISL88002IE44Z-TK delivers superior energy efficiency (160nA vs. µA-range), tighter threshold tolerance (±1.2% vs. ±2.5%), and optimal footprint for 4.38V rail monitoring-making it the preferred choice for new ultra-low-power designs.
Availability
ISL88002IE44Z-TK is available at Aetrix Electronics and suitable for microprocessor power sequencing, battery-powered sensor nodes, and industrial I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ISL88002IE44Z-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 trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL88002IE44Z-TK belongs to Renesas' ISL8800x ultra-low-power voltage supervisor family, engineered specifically for space- and energy-constrained applications where precise, reliable power monitoring is critical.
FAQ
What is the reset threshold voltage of the ISL88002IE44Z-TK?
The ISL88002IE44Z-TK has a nominal reset threshold voltage of 4.38V, with ±1.2% accuracy over the -40°C to +85°C operating temperature range. This value is factory-programmed and specified in the Electrical Specifications table of the FN6174 datasheet under VTHVDD for part marking "244".
Does the ISL88002IE44Z-TK require an external pull-up resistor?
Yes, the ISL88002IE44Z-TK features an open-drain RST output and requires an external pull-up resistor between the RST pin and the target supply rail (e.g., VDD or another logic rail). Recommended values range from 5kΩ to 100kΩ, as stated in the Pin Descriptions section of the FN6174 datasheet.
What is the minimum supply voltage at which the ISL88002IE44Z-TK can assert a valid reset signal?
The ISL88002IE44Z-TK guarantees valid reset assertion down to VDD = 1V, as confirmed in the datasheet's Features list and Absolute Maximum Ratings section. This enables reliable brownout detection even during deep discharge of primary batteries.
Is the ISL88002IE44Z-TK pin-compatible with other members of the ISL8800x family?
Yes, the ISL88002IE44Z-TK shares identical 3-lead SC-70 pinout and footprint with all ISL88001/ISL88002/ISL88003 variants in the same package, including ISL88001IE44Z-TK and ISL88003IE44Z-TK. Only the reset output type (open-drain vs. push-pull) and threshold differ-no PCB redesign is needed when swapping within the same package.
What is the power-on reset timeout duration for the ISL88002IE44Z-TK?
The ISL88002IE44Z-TK provides a nominal power-on reset timeout of 190ms, with a specified range of 140ms to 260ms (tPOR parameter). This delay ensures sufficient time for power supply stabilization and oscillator startup before releasing the reset signal to the host microcontroller.
ISL88002IE44Z-TK 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:
- 4.38V
- Output:
- Open Drain or Open Collector
- 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
ISL88002IE44Z-TK FAQ
1.How can I place an order for ISL88002IE44Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88002IE44Z-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 ISL88002IE44Z-TK reliable?
The price and inventory of ISL88002IE44Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88002IE44Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88002IE44Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88002IE44Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88002IE44Z-TK?
ISL88002IE44Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88002IE44Z-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 ISL88002IE44Z-TK?
For technical support, including ISL88002IE44Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88002IE44Z-TK requirements.
6.How does Aetrix verify that ISL88002IE44Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88002IE44Z-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 ISL88002IE44Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88002IE44Z-TK?
All ISL88002IE44Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88002IE44Z-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 ISL88002IE44Z-TK part is unused and in its original packaging.
Return procedure for ISL88002IE44Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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