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Renesas ISL88706IB829Z-TK
- Part No.:
- ISL88706IB829Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ISL88706IB829Z-TK.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,874
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Product details
Overview
ISL88706IB829Z-TK from Renesas (formerly Intersil) is a microprocessor supervisor IC with fixed 2.92V supply voltage monitoring, active-low and active-high reset outputs, power-fail detection, and watchdog timer functionality. It asserts reset during power-up, brownout, and manual trigger events, and supports low-battery warning via PFI/PFO. It is used in portable battery-powered systems requiring reliable power sequencing and fault detection.
For engineers reviewing the ISL88706IB829Z-TK datasheet, ISL88706IB829Z-TK pinout, ISL88706IB829Z-TK application, or ISL88706IB829Z-TK equivalent, key selection criteria include ±1.8% VDD threshold accuracy, 10µA max supply current at 3V, 140ms minimum reset pulse width, immunity to power-supply transients, and dual RST/RST outputs for flexible system-level reset architecture.
Technical Context
The ISL88706IB829Z-TK integrates a precision voltage comparator for VDD supervision at 2.92V (±1.8%), a 1.25V auxiliary threshold detector on PFI for power-fail or low-battery signaling, and a 1.6s nominal watchdog timer cleared by WDI toggling. Its POR circuit ensures reset assertion for ≥200ms after VDD exceeds threshold.
It features debounced active-low MR input with internal 20kΩ pull-up, dual complementary reset outputs (RST active-low open-drain, RST active-high push-pull), and reset validity down to VDD = 1V. The device operates across –40°C to +85°C and draws ≤10µA at 3V with WDT inactive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.92V ±1.8% - ensures accurate brownout detection for 3.0V nominal rails without false resets |
| Supply Current | ≤10µA at 3V (WDT inactive) - enables multi-year operation in coin-cell–powered backup circuits |
| Reset Pulse Width | ≥140ms (typ. 200ms) - guarantees sufficient time for FPGA configuration or processor initialization |
| Watchdog Timeout | 1.6s typical - provides robust software hang detection without excessive latency |
| PFI Threshold | 1.25V ±50mV - supports adjustable external voltage monitoring down to battery depletion levels |
| Operating Temp | –40°C to +85°C - validated for industrial and portable computing environments |
| Reset Validity | Down to VDD = 1V - maintains functional reset assertion during deep brownout conditions |
Pinout & Package
ISL88706IB829Z-TK is housed in an 8-lead SOIC package (RoHS-compliant, M8.15 outline), with 1.27mm lead pitch and standard narrow-body dimensions (4.9mm × 3.9mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MR | Manual Reset Input | Active-low debounced input; internal 20kΩ pull-up enables push-button reset without external components |
| 2 VDD | Power Supply Input | Monitored supply rail; reset asserted when voltage falls below 2.92V ±1.8% |
| 3 GND | Ground Reference | Common return path for all internal comparators and output drivers |
| 4 PFI | Power-Fail Input | 1.25V threshold input for auxiliary voltage monitoring (e.g., battery voltage divider) |
| 5 PFO | Power-Fail Output | Active-high open-drain output that signals low-battery or power-fail condition |
| 6 WDI | Watchdog Input | Edge-sensitive input; toggling within 1.6s prevents watchdog timeout and reset assertion |
| 7 RST | Active-Low Reset Output | Open-drain PMOS output; pulled low during reset, compatible with mixed-voltage logic interfaces |
| 8 RST | Active-High Reset Output | Push-pull CMOS output; driven high to VDD during reset for direct connection to 3.3V/5V logic |
Key Features
| Feature | Design Value |
|---|---|
| Dual complementary reset outputs | RST (active-low open-drain) and RST (active-high push-pull) enable interface flexibility with diverse host logic families |
| Ultra-low quiescent current | ≤10µA at 3V allows integration into always-on battery-backed subsystems without significant drain |
| Immunity to supply transients | Hysteresis (29mV at 2.92V threshold) and internal filtering prevent false resets from noise or ripple |
| Power-fail detection with adjustable threshold | 1.25V PFI reference + external resistor divider enables precise low-battery warning for 1.8V–12V rails |
| Valid reset at ultra-low VDD | Reset remains asserted down to VDD = 1V - critical for graceful shutdown during deep brownout |
Applications
| Portable Medical Monitor | Notebook Power Management |
|---|---|
Use Scenario: Battery-powered ECG monitor with real-time data logging and Bluetooth transmission. IC Role / Device Role / Timing Role: Supervisor monitors main 3.0V rail and Li-ion cell voltage via PFI; asserts RST to halt MCU and initiate safe data save before shutdown. Use Value: Prevents data corruption during battery depletion by triggering controlled shutdown at precisely 2.92V VDD and <3.2V battery (via 1.25V PFI divider). | Use Scenario: Embedded controller managing CPU core voltage, DDR termination, and peripheral power rails. IC Role / Device Role / Timing Role: ISL88706IB829Z-TK supervises 3.0V auxiliary rail and feeds RST to southbridge; PFO signals battery low to OS. Use Value: Dual RST outputs simplify timing-critical reset propagation; 140ms+ pulse width meets Intel PCH reset hold-time requirements. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: DIN-rail mounted I/O module with isolated CAN and analog inputs, powered from 24V DC-DC converter. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail; WDI connected to ARM Cortex-M watchdog timer; MR tied to front-panel service button. Use Value: 1.6s watchdog timeout aligns with firmware task scheduling; MR debounce eliminates contact bounce-induced spurious resets. | Use Scenario: Revenue-grade meter with tamper detection, RTC backup, and HPLC communication. IC Role / Device Role / Timing Role: Supervises 3.0V RTC/sensor rail; PFI monitors supercapacitor voltage; PFO triggers nonvolatile event logging on impending power loss. Use Value: 1.25V PFI threshold enables accurate end-of-capacity detection; ≤10µA IDD extends supercap lifetime by >20% vs. higher-current supervisors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT29D+ | Single active-low reset output; no RST; 2.93V threshold; 3µA max IDD | Lacks dual-reset flexibility and PFI/PFO monitoring; better for ultra-low-power only | Select if board space is constrained and only one reset polarity is needed |
| TPS3808G33DBVR | 2.93V threshold; 1.6s watchdog; no PFI/PFO; 16µA max IDD at 3V | Missing auxiliary voltage monitor; requires external circuitry for battery warning | Choose when power-fail detection is not required and TI ecosystem preference applies |
Compared with MAX6326UT29D+ and TPS3808G33DBVR, the ISL88706IB829Z-TK uniquely delivers dual-polarity reset outputs, integrated 1.25V PFI monitoring, and sub-10µA operation - enabling compact, feature-rich supervision in battery-critical portable and industrial designs without added components.
Availability
ISL88706IB829Z-TK is available at Aetrix Electronics and suitable for portable medical monitors, notebook power management, industrial PLC I/O modules, smart energy meters, and intelligent instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for ISL88706IB829Z-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 (acquired Intersil in 2017) is a global semiconductor leader delivering high-performance analog, power management, and embedded processing solutions for industrial, automotive, and infrastructure markets.
The ISL88706IB829Z-TK belongs to the ISL887xx family of microprocessor supervisors, designed specifically for cost-sensitive, space-constrained portable and embedded systems needing precise voltage monitoring, watchdog safety, and power-fail warning in a single 8-pin SOIC.
FAQ
What is the exact VDD reset threshold voltage for ISL88706IB829Z-TK?
The ISL88706IB829Z-TK has a factory-programmed VDD voltage trip point of 2.92V, specified with ±1.8% accuracy over temperature (2.867V min to 2.973V max). This threshold is laser-trimmed during production and applies across the full –40°C to +85°C operating range, ensuring consistent brownout detection for 3.0V systems.
Does ISL88706IB829Z-TK support both active-high and active-low reset outputs simultaneously?
Yes, ISL88706IB829Z-TK provides two independent reset outputs: RST (pin 7) is active-low open-drain, and RST (pin 8) is active-high push-pull. Both assert concurrently during power-up, brownout, or manual reset, enabling direct interfacing with mixed-voltage logic families without level-shifting components.
Can ISL88706IB829Z-TK monitor battery voltage independently of the main supply?
Yes, the ISL88706IB829Z-TK includes a dedicated PFI (Power-Fail Input) pin with a precise 1.25V threshold. By connecting a resistor divider from battery voltage to PFI, designers can configure low-battery warning for any voltage above 1.25V - for example, detecting <3.4V on a Li-ion cell while supervising a separate 3.0V system rail.
What is the watchdog timeout period for ISL88706IB829Z-TK, and how is it cleared?
The ISL88706IB829Z-TK features a nominal 1.6s watchdog timeout period (1.0s min, 2.0s max). The internal timer is cleared on any rising or falling edge at the WDI pin (pin 6), or by asserting the MR input. If WDI remains static beyond the timeout, WDO pulls low and continues periodic assertion until activity resumes.
Is ISL88706IB829Z-TK RoHS-compliant and suitable for reflow soldering?
Yes, ISL88706IB829Z-TK is RoHS-compliant (Pb-free) and packaged in an 8-lead SOIC (M8.15 outline) qualified for standard Pb-free reflow soldering per JEDEC J-STD-020. Its thermal profile supports peak reflow temperatures up to 260°C, making it compatible with automated SMT assembly lines.
ISL88706IB829Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.92V
- 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:
- 8-SOIC
ISL88706IB829Z-TK FAQ
1.How can I place an order for ISL88706IB829Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88706IB829Z-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 ISL88706IB829Z-TK reliable?
The price and inventory of ISL88706IB829Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88706IB829Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88706IB829Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88706IB829Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88706IB829Z-TK?
ISL88706IB829Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88706IB829Z-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 ISL88706IB829Z-TK?
For technical support, including ISL88706IB829Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88706IB829Z-TK requirements.
6.How does Aetrix verify that ISL88706IB829Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88706IB829Z-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 ISL88706IB829Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88706IB829Z-TK?
All ISL88706IB829Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88706IB829Z-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 ISL88706IB829Z-TK part is unused and in its original packaging.
Return procedure for ISL88706IB829Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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