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Renesas ISL88012IH529Z-TK
- Part No.:
- ISL88012IH529Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH529Z-TK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,658
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Product details
Overview
ISL88012IH529Z-TK from Intersil is a 5-lead SOT-23 dual-voltage supervisor IC with fixed 2.92V VDD monitoring and user-adjustable VMON input (down to 0.6V), ±1.5% threshold accuracy, 200ms power-on reset timeout, and complementary active-low RST and active-high RST outputs. It supports critical µP/µC power sequencing in embedded control systems.
For engineers reviewing the ISL88012IH529Z-TK datasheet, ISL88012IH529Z-TK pinout, ISL88012IH529Z-TK application, or ISL88012IH529Z-TK equivalent, key selection considerations include dual-supply monitoring capability, ultra-low 5.5µA supply current, reset validity down to VDD = 1V, and compatibility with manual reset assertion and adjustable POR timing via external capacitor.
Technical Context
The ISL88012IH529Z-TK integrates two independent voltage monitoring channels: one factory-trimmed at 2.92V for VDD supervision and another referenced to an internal 600mV bandgap for VMON, enabling custom trip points via external resistor divider. Its reset logic asserts both RST (push-pull high) and RST (open-drain low) simultaneously upon undervoltage or manual reset.
It features hysteresis (29mV at 2.92V trip point) to prevent noise-induced chatter, operates across –40°C to +85°C, and maintains valid reset signaling even as VDD drops to 1V - ensuring robust brownout detection during power ramp-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.92V ±1.5% - factory-programmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal (adjustable ≥0.6V) - internal reference enables custom monitoring of secondary rails |
| POR Timeout | 200ms typical - ensures stable power-up before releasing reset to microcontroller |
| Supply Current | 5.5µA typical at 2.5V - enables long battery life in portable equipment |
| Reset Validity | Down to VDD = 1V - guarantees reliable reset assertion during deep brownout |
| Hysteresis | 29mV at 2.92V - prevents oscillation near threshold under noisy supply conditions |
| Operating Temp | –40°C to +85°C - qualified for industrial embedded applications |
Pinout & Package
Package: 5-lead SOT-23 (Pb-free, RoHS compliant, JEDEC MO178AA / EIAJ SC-74).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined open-drain reset output & debounced manual reset input | Asserts low on fault or button press; requires external pull-up for active-high logic interface |
| 2 - GND | Ground reference | Common return path for all internal circuits and external bias networks |
| 3 - RST | Push-pull active-high reset output | Drives high without external components; complements RST/MR for dual-signaling systems |
| 4 - VDD | Power supply and primary monitored voltage input | Supplies device and triggers reset when falling below 2.92V ±1.5% |
| 5 - VMON | User-adjustable voltage monitoring input | Compares against 0.6V internal reference; supports resistor-divider scaling for custom thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Dual voltage supervision | Simultaneous monitoring of fixed 2.92V VDD rail and scalable VMON rail (≥0.6V) |
| Complementary reset outputs | RST (push-pull high) and RST/MR (open-drain low) enable direct interfacing with diverse logic families |
| ±1.5% threshold accuracy | Guaranteed over temperature ensures precise brownout detection without calibration |
| Ultra-low quiescent current | 5.5µA max enables use in always-on battery-backed subsystems |
| Reset validity to 1V VDD | Maintains functional reset assertion during severe supply sag - critical for fail-safe shutdown |
Applications
| Industrial Embedded Control | Portable Medical Devices |
|---|---|
Use Scenario: Monitoring main 3.3V logic rail and auxiliary 1.8V sensor supply in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-supervisor enforces synchronized reset release only after both rails stabilize above thresholds. Use Value: Prevents firmware execution with invalid I/O voltage, eliminating spurious communication errors in field-deployed units. |
Use Scenario: Ensuring safe startup and brownout recovery in handheld glucose meters powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Monitors battery voltage (via VMON divider) and regulated 3.0V system rail (VDD) with hysteresis. Use Value: 5.5µA supply current extends battery life; reset-to-1V operation guarantees shutdown before cell damage occurs. |
| Network Edge Router Modules | Automotive Infotainment Subsystems |
Use Scenario: Supervising 12V DC-DC converter output and 5V FPGA core voltage in compact router line cards. IC Role / Device Role / Timing Role: Uses VMON to monitor scaled 12V rail (e.g., 12V → 2.92V via 4:1 divider) while VDD monitors 5V directly. Use Value: Single 5-pin IC replaces two discrete supervisors, reducing BOM count and PCB area in space-constrained modules. |
Use Scenario: Power sequencing validation for display driver ICs and audio codecs in head-unit designs. IC Role / Device Role / Timing Role: Asserts complementary RST/RST signals to coordinate reset timing across mixed-voltage ASICs. Use Value: 200ms POR delay aligns with typical display initialization timing; ±1.5% accuracy avoids false resets due to thermal drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL88014IH5Z-TK | No fixed VDD threshold; VMON-only monitoring with same 0.6V reference and 200ms POR | Lacks dedicated VDD supervision - requires external resistor divider for primary rail monitoring | Choose when only one adjustable rail needs supervision and board space allows divider network |
| MAX6326UR29-T | Single 2.93V supervisor (±2.5% accuracy), no VMON, no complementary outputs, 200ms POR | Monitors only one rail; lacks dual-output flexibility and adjustable secondary monitoring | Select when cost sensitivity outweighs need for dual-rail coverage and precision |
Compared with ISL88012IH529Z-TK, ISL88014IH5Z-TK removes fixed VDD supervision but retains identical VMON functionality and package, while MAX6326UR29-T offers lower cost and simpler integration at the expense of monitoring flexibility and threshold accuracy.
Availability
ISL88012IH529Z-TK is available at Aetrix Electronics and suitable for industrial embedded control, portable medical instrumentation, and network infrastructure applications requiring stable component supply despite its end-of-life status.
Supply support for ISL88012IH529Z-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
Intersil Corporation is a provider of precision analog and power management ICs, now part of Renesas Electronics, with expertise in supervisory, timing, and interface solutions.
The ISL88012IH529Z-TK belongs to the ISL8801x family of voltage supervisors designed specifically for low-power, high-accuracy dual-rail monitoring in space-constrained embedded systems.
FAQ
What is the exact voltage threshold for VDD monitoring on the ISL88012IH529Z-TK?
The ISL88012IH529Z-TK has a factory-programmed VDD threshold of 2.92V with ±1.5% accuracy over temperature. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00, where VTHVDD for IH529 variants is listed as 2.88V (min), 2.92V (typ), and 2.96V (max).
Does the ISL88012IH529Z-TK support manual reset functionality?
Yes, the ISL88012IH529Z-TK supports manual reset via the RST/MR pin (Pin 1), which serves as a debounced active-low input. Pulling this pin below 100mV for ≥1µs asserts reset, and the outputs remain asserted for the full 200ms POR delay before release - as specified in the Pin Descriptions (page 5) and Manual Reset section (page 10) of FN8093.
Can the ISL88012IH529Z-TK monitor a 12V supply?
Yes, the ISL88012IH529Z-TK can monitor a 12V supply using the VMON pin with an external resistor divider. The internal 600mV reference allows scaling: for example, a 20:1 divider (e.g., 11.4kΩ + 600Ω) sets a 12V trip point. Figure 2 (page 9) and Typical Application Circuit Figure 12 (page 12) of FN8093 confirm this configuration for the ISL88012IH529Z-TK.
What is the supply current consumption of the ISL88012IH529Z-TK at 3.3V?
At VDD = 3.3V, the ISL88012IH529Z-TK draws 7µA (min) to 10µA (max), with 8.5µA typical - per the IDD specification table on page 6 of FN8093 Rev 5.00. This ultra-low current enables use in battery-powered systems where standby power budget is critical.
Is the ISL88012IH529Z-TK pin-compatible with other members of the ISL8801x family?
Yes, all ISL8801x devices including the ISL88012IH529Z-TK use identical 5-lead SOT-23 packaging and share the same pinout (RST/MR, GND, RST, VDD, VMON), as shown in the Pinouts diagram (page 2) and Pin Descriptions table (page 5) of FN8093. However, functional differences (e.g., watchdog presence, CPOR support) require schematic review before substitution.
ISL88012IH529Z-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.92V, Adj
- Output:
- Open Drain, Push-Pull
- Reset:
- Active High/Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-SOT
ISL88012IH529Z-TK FAQ
1.How can I place an order for ISL88012IH529Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH529Z-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 ISL88012IH529Z-TK reliable?
The price and inventory of ISL88012IH529Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH529Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88012IH529Z-TK?
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Once your ISL88012IH529Z-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 ISL88012IH529Z-TK?
For technical support, including ISL88012IH529Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH529Z-TK requirements.
6.How does Aetrix verify that ISL88012IH529Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88012IH529Z-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 ISL88012IH529Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88012IH529Z-TK?
All ISL88012IH529Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH529Z-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 ISL88012IH529Z-TK part is unused and in its original packaging.
Return procedure for ISL88012IH529Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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