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Renesas ISL88012IH526Z-TK
- Part No.:
- ISL88012IH526Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH526Z-TK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,269
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Product details
Overview
ISL88012IH526Z-TK from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 2.63V VDD monitoring and user-adjustable VMON monitoring down to 0.6V. It delivers complementary active-low (RST) and active-high (RST) reset outputs, 200ms power-on reset timeout, manual reset input, and ultra-low 5.5µA supply current - deployed in embedded microcontroller power sequencing and brownout protection.
For engineers reviewing the ISL88012IH526Z-TK datasheet, ISL88012IH526Z-TK pinout, ISL88012IH526Z-TK application, or ISL88012IH526Z-TK equivalent, key selection considerations include its dual-threshold supervision capability, ±1.5% voltage threshold accuracy over -40°C to +85°C, reset validity down to VDD = 1V, immunity to supply transients, and compatibility with low-power portable systems requiring reliable POR and manual reset assertion.
Technical Context
The ISL88012IH526Z-TK integrates two independent voltage monitoring channels: one factory-trimmed at 2.63V ±1.5% for VDD supervision, and a second user-configurable channel referenced to an internal 600mV bandgap on the VMON pin. Reset assertion occurs when either input falls below its trip point, with hysteresis (26mV typical at 2.63V) preventing chatter during marginal conditions.
It features complementary push-pull RST and open-drain RST/MR outputs, enabling direct interface with both logic-high and logic-low reset-sensitive controllers. The device asserts reset during power-up (valid down to VDD = 1V), brownout, manual reset activation, and maintains reset for a guaranteed 140–260ms timeout after recovery - all while consuming only 5.5µA typical supply current at 3.3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 2.63V ±1.5% - factory-programmed fixed trip point for primary supply monitoring |
| VMON Threshold | 0.6V nominal (adjustable >0.6V via external resistor divider) - enables custom monitoring of secondary rails |
| POR Timeout | 140–260ms - ensures stable power before releasing reset; no external capacitor required |
| Supply Current | 5.5µA typical at 3.3V - supports battery-backed and ultra-low-power applications |
| Reset Validity | Down to VDD = 1V - guarantees reset assertion even during deep brownout |
| Output Types | Complementary RST (push-pull high) and RST/MR (open-drain low) - eliminates need for external pull-ups |
| Accuracy | ±1.5% over -40°C to +85°C - meets industrial-grade precision requirements without calibration |
Pinout & Package
ISL88012IH526Z-TK uses a Pb-free 5-lead SOT-23 package (JEDEC MO-178AA, Intersil pkg drawing P5.064), measuring 2.80 × 1.60 × 1.10 mm, with gull-wing leads and 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RST/MR | Combined active-low reset output & manual reset input | Open-drain output asserted LOW during reset; accepts debounced active-low MR pulse ≥1µs |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external bias networks |
| 3 - RST | Active-high reset output | Push-pull output driven HIGH during reset; sinks/source up to 0.5mA/0.4mA |
| 4 - VDD | Supply voltage and monitored rail input | Primary power input (2.0–5.5V); internally compared against 2.63V threshold |
| 5 - VMON | User-adjustable voltage monitor input | Accepts external resistor divider; compared against internal 600mV reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneously monitors main supply (2.63V fixed) and auxiliary rail (0.6V adjustable) - reduces BOM count vs. discrete supervisors |
| Complementary reset outputs | RST (push-pull HIGH) and RST/MR (open-drain LOW) enable direct connection to diverse MCU reset architectures without level-shifting |
| ±1.5% threshold accuracy over temperature | Eliminates need for system-level calibration across -40°C to +85°C industrial range |
| Ultra-low 5.5µA quiescent current | Extends battery life in portable equipment and enables always-on supervision in energy-constrained nodes |
| Reset valid down to VDD = 1V | Ensures fail-safe behavior during severe undervoltage events where other supervisors may release reset prematurely |
Applications
| Industrial Embedded Control | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Monitoring 3.3V logic supply and 1.8V sensor rail in a handheld blood glucose meter with battery backup. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops below spec, ensuring safe shutdown before data corruption. Use Value: Prevents firmware execution under marginal voltage, preserving EEPROM integrity and meeting IEC 62304 safety requirements. |
Use Scenario: Power sequencing and brownout detection in a wearable ECG patch powered by a single Li-ion cell. IC Role / Device Role / Timing Role: Monitors declining battery voltage (via VMON divider) and main 2.8V LDO output (VDD) to trigger graceful shutdown. Use Value: Enables deterministic low-battery warning and controlled memory save before power collapse, extending usable runtime. |
| Programmable Logic Controller (PLC) I/O Module | Automotive Body Control Module (BCM) Subsystem |
|
Use Scenario: Supervising 5V field bus interface and 3.3V FPGA core supply in an industrial PLC digital I/O card. IC Role / Device Role / Timing Role: Dual-threshold monitoring with hysteresis prevents spurious resets during noisy 24V field bus transients. Use Value: Maintains system uptime in electrically harsh environments while meeting EN 61000-6-2 immunity requirements. |
Use Scenario: Monitoring 12V battery-derived 5V supply and isolated 3.3V microcontroller rail in a door module BCM. IC Role / Device Role / Timing Role: Detects cold-crank undervoltage (VDD < 2.63V) and post-ignition rail instability (VMON < 0.6V × divider ratio). Use Value: Guarantees MCU reset during engine start, preventing erratic actuator behavior per ISO 16750-2 test profiles. |
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 supervision with 0.6V base trip point; no RST output (RST/MR only) | Suitable only for single-rail monitoring; lacks complementary reset outputs and fixed VDD supervision | Select when only one adjustable rail requires supervision and board space is constrained |
| MAX6326UT26D3+T | Single 2.63V supervisor (no VMON); 200ms POR; active-low only; higher 12µA ICC | Provides basic VDD monitoring only; no dual-rail capability or manual reset input | Choose for cost-sensitive designs needing only primary supply supervision without auxiliary monitoring |
Compared with ISL88012IH526Z-TK, ISL88014IH5Z-TK omits fixed VDD supervision and complementary outputs but retains adjustable VMON, while MAX6326UT26D3+T offers lower cost and footprint for single-rail use but sacrifices dual monitoring, manual reset, and ultra-low current.
Availability
ISL88012IH526Z-TK is available at Aetrix Electronics and suitable for industrial embedded control, portable medical instrumentation, and automotive body electronics requiring stable component supply despite end-of-life status.
Supply support for ISL88012IH526Z-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 (now part of Renesas Electronics) is a leader in precision analog and power management ICs, delivering high-reliability solutions for industrial, computing, and consumer markets.
The ISL88012IH526Z-TK belongs to Intersil's ISL8801x family of voltage supervisors, designed specifically for robust, low-power dual-rail monitoring in space-constrained embedded systems requiring guaranteed reset behavior across wide temperature ranges.
FAQ
What is the exact voltage threshold for VDD supervision on the ISL88012IH526Z-TK?
The ISL88012IH526Z-TK has a factory-programmed VDD threshold of 2.63V with ±1.5% accuracy over -40°C to +85°C. This value is confirmed in the Ordering Information table (page 3) and Electrical Specifications (page 6) of FN8093 Rev 5.00, where VTHVDD = 2.59V (min), 2.63V (typ), 2.67V (max) for part marking AHJ.
Does the ISL88012IH526Z-TK support adjustable power-on reset timeout?
No, the ISL88012IH526Z-TK does not support adjustable POR timeout via CPOR. That feature is exclusive to ISL88011 and ISL88014 per the Product Features Table (page 5). The ISL88012IH526Z-TK provides a fixed 140–260ms tPOR, as specified in the Electrical Specifications table on page 7.
Can the ISL88012IH526Z-TK monitor a 1.2V rail using the VMON pin?
Yes - the ISL88012IH526Z-TK can monitor a 1.2V rail using the VMON pin by configuring an external resistor divider. Since the internal VMON reference is 600mV, a 2:1 divider (e.g., 100kΩ top, 100kΩ bottom) scales 1.2V to 600mV at VMON, triggering reset when the rail falls below 1.2V × (1 − hysteresis). This is explicitly supported per Note 2 on page 4.
What are the absolute maximum ratings for the ISL88012IH526Z-TK?
The ISL88012IH526Z-TK has an absolute maximum VDD of 5.5V, voltage on any pin relative to GND of −1.0V to +7.0V, and operating junction temperature up to +125°C. These values are listed in the Absolute Maximum Ratings table (page 6) of FN8093 Rev 5.00 and apply to all members of the ISL8801x family.
Is the ISL88012IH526Z-TK RoHS compliant and Pb-free?
Yes, the ISL88012IH526Z-TK is Pb-free and RoHS compliant. Per Notes 1 and 4 on page 4 of FN8093 Rev 5.00, it uses 100% matte tin (e3) termination finish and conforms to IPC/JEDEC J-STD-020 reflow standards for lead-free assembly.
ISL88012IH526Z-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:
- 2.63V, 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
ISL88012IH526Z-TK FAQ
1.How can I place an order for ISL88012IH526Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH526Z-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 ISL88012IH526Z-TK reliable?
The price and inventory of ISL88012IH526Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH526Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88012IH526Z-TK?
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4.How is shipping managed for ISL88012IH526Z-TK?
ISL88012IH526Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH526Z-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 ISL88012IH526Z-TK?
For technical support, including ISL88012IH526Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH526Z-TK requirements.
6.How does Aetrix verify that ISL88012IH526Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88012IH526Z-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 ISL88012IH526Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88012IH526Z-TK?
All ISL88012IH526Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH526Z-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 ISL88012IH526Z-TK part is unused and in its original packaging.
Return procedure for ISL88012IH526Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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