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Renesas ISL88001IE29Z-T7A
- Part No.:
- ISL88001IE29Z-T7A
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
ISL88001IE29Z-T7A.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,019
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Product details
Overview
ISL88001IE29Z-T7A from Renesas is an ultra-low-power 3-pin voltage supervisor IC with a fixed 2.92V 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 voltage drops below threshold or during power-up.
For engineers reviewing the ISL88001IE29Z-T7A datasheet, ISL88001IE29Z-T7A pinout, ISL88001IE29Z-T7A application, or ISL88001IE29Z-T7A equivalent, key selection criteria include trip point tolerance, reset output type (push-pull), minimum operating voltage (1V), package footprint (SC-70), and compatibility with battery-powered or space-constrained embedded designs.
Technical Context
The ISL88001IE29Z-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 for ≥140ms after VDD exceeds 2.92V.
It operates over -40°C to +85°C, consumes only 160nA at 1.8V input, and delivers a push-pull RST output capable of sinking 10mA with VOL ≤ 0.4V - eliminating external pull-up resistors required by open-drain alternatives like ISL88002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.92V ±1.2% (ensures reliable brownout detection for 3.0V/3.3V rails) |
| Supply Current | 160nA typical at 1.8V (enables multi-year battery life in always-on monitoring) |
| POR Timeout | 190ms nominal (guarantees µC initialization after stable VDD rise) |
| Min Operating Voltage | 1V (allows reset assertion even during deep brownout or low-battery conditions) |
| Output Type | Push-pull active-low (drives reset line directly without external pull-up) |
| Package | 3-lead SC-70 (1.8 × 1.2 × 0.9 mm; saves >30% board area vs SOT-23) |
| Temp Range | -40°C to +85°C (supports industrial and portable equipment environments) |
Pinout & Package
ISL88001IE29Z-T7A uses a 3-lead SC-70 package (P3.049 drawing), measuring 1.8mm × 1.2mm × 0.9mm with gull-wing leads. Pin 1 is GND, Pin 2 is RST (active-low push-pull), and Pin 3 is VDD (monitored supply input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | IC ground reference; must be connected to system ground plane for accurate threshold sensing |
| 2 | RST | Active-low push-pull reset output; drives LOW during power-up or brownout, HIGH otherwise - no external pull-up needed |
| 3 | VDD | Power supply input and monitored voltage node; supplies IC and provides input to internal voltage comparator |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.92V threshold | Matches common 3.0V rail tolerances; eliminates need for external resistor divider calibration |
| 160nA supply current | Reduces quiescent power draw by >5× vs legacy supervisors, critical for coin-cell applications |
| ±1.2% threshold accuracy | Guarantees reset assertion within 35mV of 2.92V across temperature, improving system reliability |
| 190ms POR timeout | Ensures sufficient time for µC oscillator stabilization and register initialization before release |
| 1V minimum operating voltage | Enables valid reset signaling even as battery depletes below 1.2V, preventing undefined behavior |
Applications
| Microprocessor Power-Up Control | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Ensuring clean boot sequence for ARM Cortex-M0+ MCU powered from a 3.0V LDO. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout protection via push-pull RST signal. Use Value: Prevents code execution before VDD stabilizes above 2.92V and guarantees ≥190ms hold time for flash initialization. | Use Scenario: Monitoring coin-cell voltage in a BLE temperature sensor that sleeps at 200nA. IC Role / Device Role / Timing Role: Ultra-low-power supervisor detecting end-of-life battery drop below 2.92V. Use Value: 160nA IDD extends battery life beyond 10 years; 1V min operation ensures reset remains valid until cell reaches 1.0V. |
| Industrial PLC I/O Module | Handheld Medical Device |
Use Scenario: Protecting FPGA configuration and analog front-end during 24V-to-3.3V DC/DC startup transients. IC Role / Device Role / Timing Role: Immune-to-transient supervisor asserting reset until 3.3V rail settles and stays above 2.92V for 190ms. Use Value: ±1.2% threshold accuracy prevents false resets during load-step events; SC-70 footprint fits dense I/O PCB layouts. | Use Scenario: Enabling safe shutdown in a portable ECG monitor using a single Li-ion cell (2.7–4.2V range). IC Role / Device Role / Timing Role: Reset generator triggering controlled firmware halt when cell voltage falls to 2.92V. Use Value: Push-pull RST drives microcontroller's nRST pin directly - no pull-up resistor saves BOM cost and layout space. |
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 | 2.93V threshold, ±2.5% accuracy, 1.2µA supply current, SOT-23-3 package | Higher quiescent current limits use in multi-year battery apps; same pinout but larger thermal resistance (θJA = 590°C/W) | Select MAX809SEUR+T only if higher accuracy is not required and board space allows SOT-23 |
| TPS3801K33DBVR | 3.3V threshold (not 2.92V), ±0.5% accuracy, 1.8µA supply current, SOT-23-3 | Threshold mismatch requires redesign for 3.0V rail; superior accuracy trades off 11× higher IDD | Choose TPS3801K33DBVR only when 3.3V supervision is needed and lower accuracy is acceptable |
Compared with MAX809SEUR+T and TPS3801K33DBVR, the ISL88001IE29Z-T7A delivers tighter threshold accuracy (±1.2% vs ±2.5%/±0.5%), ultra-low 160nA current (vs 1.2µA/1.8µA), and exact 2.92V trip point - making it optimal for long-life, space-constrained 3.0V systems where reset timing and precision are critical.
Availability
ISL88001IE29Z-T7A is available at Aetrix Electronics and suitable for microcontroller power sequencing, battery voltage monitoring, and industrial I/O module design requiring stable component supply and RoHS-compliant packaging.
Supply support for ISL88001IE29Z-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, engineered specifically for energy-sensitive applications including portable medical devices, wireless sensors, and battery-backed controllers.
FAQ
What is the reset threshold voltage of the ISL88001IE29Z-T7A?
The ISL88001IE29Z-T7A has a factory-programmed fixed reset threshold of 2.92V with ±1.2% accuracy over -40°C to +85°C. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 8) of FN6174 Rev 3.00, where VTHVDD for ISL88001IE29Z variants is specified as 2.92V nominal with min/max bounds of 2.85V–3.00V.
Does the ISL88001IE29Z-T7A require an external pull-up resistor on the RST pin?
No, the ISL88001IE29Z-T7A does not require an external pull-up resistor because it features a push-pull RST output. As stated in the Pin Descriptions (page 2) and Functional Block Diagrams (page 2), the ISL88001 variant drives RST actively HIGH or LOW - unlike the open-drain ISL88002 which requires a pull-up. This simplifies design and reduces BOM count.
What is the minimum supply voltage at which the ISL88001IE29Z-T7A can assert a valid reset signal?
The ISL88001IE29Z-T7A asserts a valid reset signal down to VDD = 1V, as explicitly documented in the datasheet introduction (page 1) and Electrical Specifications table (page 8). This capability ensures reliable brownout detection even as battery voltage collapses, enabling graceful shutdown before logic states become undefined.
Is the ISL88001IE29Z-T7A pin-compatible with MAX809-series supervisors?
Yes, the ISL88001IE29Z-T7A is pin-compatible with MAX803, MAX809, and MAX810 in both SC-70 and SOT-23 packages, as confirmed in the Features section (page 1) of FN6174 Rev 3.00. However, note that ISL88001IE29Z-T7A uses SC-70 (P3.049), while standard MAX809 variants use SOT-23 - mechanical compatibility requires verifying land patterns per respective package drawings.
What is the power-on reset timeout duration for the ISL88001IE29Z-T7A?
The ISL88001IE29Z-T7A provides a nominal power-on reset timeout of 190ms, with a guaranteed range of 140ms to 260ms (tPOR parameter, page 9). This value is derived from characterization data shown in Figure 3 (page 11), where ISL88001 RST tPOR measures ~144ms, and the datasheet specifies 190ms as the typical value used for design margining.
ISL88001IE29Z-T7A 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:
- 2.925V
- 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
ISL88001IE29Z-T7A FAQ
1.How can I place an order for ISL88001IE29Z-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88001IE29Z-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 ISL88001IE29Z-T7A reliable?
The price and inventory of ISL88001IE29Z-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88001IE29Z-T7A is usually 5 days.
3.What payment methods are accepted for ISL88001IE29Z-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88001IE29Z-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88001IE29Z-T7A?
ISL88001IE29Z-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88001IE29Z-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 ISL88001IE29Z-T7A?
For technical support, including ISL88001IE29Z-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88001IE29Z-T7A requirements.
6.How does Aetrix verify that ISL88001IE29Z-T7A is sourced from the original manufacturer or authorized distributors?
All ISL88001IE29Z-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 ISL88001IE29Z-T7A meets industry standards.
7.What is the process for return or replacement of ISL88001IE29Z-T7A?
All ISL88001IE29Z-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL88001IE29Z-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 ISL88001IE29Z-T7A part is unused and in its original packaging.
Return procedure for ISL88001IE29Z-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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