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Renesas ISL88012IH546Z-TK
- Part No.:
- ISL88012IH546Z-TK
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ISL88012IH546Z-TK.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL88012IH546Z-TK from Intersil is a dual-voltage supervisor IC in 5-lead SOT-23 packaging, providing fixed 4.64V VDD monitoring and user-adjustable VMON threshold down to 0.6V, with complementary active-low (RST) and active-high (RST) reset outputs, 200ms power-on reset timeout, and manual reset input - used for reliable µP power sequencing in embedded control systems.
For engineers reviewing the ISL88012IH546Z-TK datasheet, ISL88012IH546Z-TK pinout, ISL88012IH546Z-TK application, or ISL88012IH546Z-TK equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in FN8093 Rev 5.00 and official ordering data.
Technical Context
The ISL88012IH546Z-TK integrates two independent voltage monitoring paths: one compares VDD against a factory-trimmed 4.64V ±1.5% threshold, while the second monitors VMON against an internal 600mV reference, adjustable upward via external resistor divider. It asserts reset when either input falls below its trip point and holds reset for ≥200ms after recovery.
It features dual reset outputs (push-pull RST and open-drain RST/MR), debounced manual reset input (MR), and operates from 2.0V to 5.5V supply with only 5.5µA typical quiescent current. Reset remains valid down to VDD = 1V, and the device includes hysteresis (46mV at 4.64V) to reject supply transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Threshold | 4.64V ±1.5% - factory-programmed trip point for primary supply monitoring; enables precise +5V rail supervision. |
| VMON Threshold | 0.6V (default), adjustable >0.6V - internal reference allows custom low-voltage monitoring (e.g., 1.2V, 1.8V, 3.3V rails) using external resistors. |
| POR Timeout | 200ms (typical) - ensures microprocessor remains held in reset until power stabilizes; no external capacitor required. |
| Supply Current | 5.5µA (typical at 5V) - ultra-low power enables use in battery-backed or energy-sensitive applications. |
| Reset Outputs | Complementary RST (push-pull high/low) and RST/MR (open-drain active-low) - supports direct interface to both logic families and pull-up configurations. |
| Operating Temp | -40°C to +85°C - qualified for industrial-grade embedded systems including process controllers and instrumentation. |
| Package | 5-lead SOT-23 (Pb-free, RoHS compliant) - compact footprint (2.8 × 2.9 × 1.3 mm) suitable for space-constrained PCB layouts. |
Pinout & Package
ISL88012IH546Z-TK uses a 5-lead SOT-23 package (PKG DWG # P5.064), with lead pitch of 0.95mm and body dimensions 2.80 × 2.90 × 1.30 mm. Pin 1 is marked by a dot or beveled edge.
| 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 signal (≤100mV, ≥1µs pulse) to trigger system reset. |
| 2 - GND | Ground reference | Primary return path for internal comparators, reset drivers, and bias circuitry; must be connected to system ground plane. |
| 3 - RST | Active-high push-pull reset output | Drives HIGH (to VDD) during normal operation; drives LOW during reset - directly interfaces with µP / FPGA reset inputs requiring active-high assertion. |
| 4 - VDD | Supply voltage and monitored input | Power source (2.0–5.5V); simultaneously monitored against 4.64V threshold - enables self-supervision of main system rail. |
| 5 - VMON | User-adjustable voltage monitor input | Compares applied voltage against 600mV internal reference; supports custom thresholds (e.g., 1.2V, 2.5V, 3.3V) via external resistor divider per Equation 1. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage supervision | Simultaneously monitors VDD (4.64V fixed) and VMON (0.6V adjustable), enabling robust multi-rail validation without external comparators. |
| Complementary reset outputs | RST (push-pull active-high) and RST/MR (open-drain active-low) eliminate need for level-shifting or external inverters in mixed-logic designs. |
| Manual reset with debounce | MR input rejects noise and contact bounce; requires only a simple push-button to ground - no external RC filtering needed. |
| Ultra-low supply current | 5.5µA typical at 5V enables integration into always-on subsystems (e.g., RTC backup, wake-on-event circuits) without impacting battery life. |
| High accuracy over temperature | ±1.5% VTH tolerance across -40°C to +85°C ensures reliable reset assertion even under thermal stress - critical for industrial reliability. |
Applications
| Industrial Process Controller | Embedded Microcontroller System |
|---|---|
Use Scenario: Monitors 5V main supply and 3.3V I/O rail in PLC modules operating in harsh factory environments with wide temperature swings. IC Role / Device Role / Timing Role: Dual-supervisor ensuring both rails are stable before releasing µC reset; provides fail-safe brownout detection and manual maintenance reset. Use Value: Prevents erratic firmware execution during voltage sag; eliminates need for discrete reset ICs and external timing components. |
Use Scenario: Powers on and supervises ARM Cortex-M4-based medical sensor node with battery backup and isolated communication interface. IC Role / Device Role / Timing Role: Asserts reset until 5V rail reaches 4.64V and 3.3V rail (via VMON divider) exceeds 3.3V × 0.9 = 2.97V, then holds for 200ms. Use Value: Guarantees clean boot sequence for safety-critical firmware; low 5.5µA IDD extends battery runtime in standby mode. |
| Portable Test Instrument | Intelligent Power Supply Unit |
Use Scenario: Used in handheld multimeter with dual Li-ion cells (8.4V pack) regulating to 5V and 3.3V, requiring accurate undervoltage lockout. IC Role / Device Role / Timing Role: VMON monitors scaled-down battery voltage (e.g., 1/3 divider → 2.8V at 8.4V); VDD monitors regulated 5V output. Use Value: Enables precise end-of-charge cutoff and graceful shutdown before deep discharge - improves battery cycle life and user safety. |
Use Scenario: Integrated into 12V/5V/3.3V ATX-style PSU to validate all output rails before enabling main converter and signaling PGOOD. IC Role / Device Role / Timing Role: Supervises 5V (VDD) and 12V (via VMON resistor network); asserts reset if either drops below threshold during load transients. Use Value: Replaces multiple discrete supervisors; reduces BOM count and PCB area while maintaining ±1.5% trip accuracy across temperature. |
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 adjustable from 0.6V; lacks RST output (RST/MR only); POR timeout fixed at 200ms. | Designed for single-rail monitoring where only one supply needs supervision; not suitable for dual-rail validation requiring separate VDD trip point. | Select when only one adjustable monitor is needed and board layout favors reduced pin count - but verify absence of RST impacts µP interface. |
| MAX6326UR29D3+T | Single 2.93V fixed threshold; no VMON input; 200ms POR; SOT-23-5; 1.6µA IDD; ±2.5% accuracy. | Only monitors one rail; no manual reset or adjustable threshold; lower accuracy and no dual-output capability. | Choose only for cost-sensitive, single-rail applications where 2.93V supervision suffices and ultra-low current (<2µA) is prioritized over flexibility. |
Compared with ISL88012IH546Z-TK, ISL88014IH5Z-TK removes fixed VDD supervision and RST output to simplify design for single-rail use, while MAX6326UR29D3+T trades dual monitoring, accuracy, and output flexibility for minimal current draw and lower unit cost in basic reset-only roles.
Availability
ISL88012IH546Z-TK is available at Aetrix Electronics and suitable for industrial process control systems, embedded microcontroller power sequencing, and portable test instrumentation requiring stable component supply despite end-of-life status.
Supply support for ISL88012IH546Z-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 infrastructure markets.
The ISL8801x family was designed specifically for robust, low-power voltage supervision in space-constrained embedded systems - emphasizing accuracy, dual-rail capability, and seamless µP integration.
FAQ
What is the function of the VMON pin on the ISL88012IH546Z-TK?
The VMON pin on the ISL88012IH546Z-TK serves as a user-adjustable voltage monitor input, comparing the applied voltage against an internal 600mV reference. When configured with external resistors per Equation 1 in FN8093, it enables precise supervision of any rail ≥0.6V - such as 1.2V, 1.8V, or 3.3V - making ISL88012IH546Z-TK ideal for multi-supply systems.
Does the ISL88012IH546Z-TK support manual reset, and how is it implemented?
Yes, the ISL88012IH546Z-TK supports manual reset via the RST/MR pin, which functions as a debounced active-low input. Pulling RST/MR to ≤100mV for ≥1µs triggers reset assertion; the device holds reset for the full 200ms POR timeout after release. This eliminates external debounce circuitry and allows direct connection to a push-button switch to ground - a key feature of ISL88012IH546Z-TK.
What are the absolute maximum ratings for the ISL88012IH546Z-TK?
The ISL88012IH546Z-TK has an absolute maximum supply voltage of 7V on any pin relative to GND, operating supply range of 2.0V to 5.5V, and temperature under bias from -40°C to +125°C. Storage temperature spans -65°C to +150°C. Exceeding these limits may impair reliability - these values are specified in FN8093 Rev 5.00 and apply strictly to ISL88012IH546Z-TK.
Can the ISL88012IH546Z-TK monitor negative voltages?
No, the ISL88012IH546Z-TK cannot directly monitor negative voltages. Its VMON and VDD pins require positive input relative to GND. However, Figure 15 in FN8093 shows an indirect method using resistor networks to derive a positive voltage proportional to a negative rail (e.g., -5V), allowing ISL88012IH546Z-TK to infer undervoltage conditions - but the IC itself only processes positive signals.
Is the ISL88012IH546Z-TK still in production, and what is its lifecycle status?
No - the ISL88012IH546Z-TK is explicitly marked "No longer available or supported" in the official FN8093 Rev 5.00 Ordering Information table (page 3). While Aetrix Electronics maintains legacy supply channels, design-in of ISL88012IH546Z-TK should include migration planning to alternatives like ISL88014IH5Z-TK or newer Renesas supervisors with compatible functionality.
ISL88012IH546Z-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:
- 4.64V, 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
ISL88012IH546Z-TK FAQ
1.How can I place an order for ISL88012IH546Z-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL88012IH546Z-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 ISL88012IH546Z-TK reliable?
The price and inventory of ISL88012IH546Z-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL88012IH546Z-TK is usually 5 days.
3.What payment methods are accepted for ISL88012IH546Z-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL88012IH546Z-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL88012IH546Z-TK?
ISL88012IH546Z-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL88012IH546Z-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 ISL88012IH546Z-TK?
For technical support, including ISL88012IH546Z-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL88012IH546Z-TK requirements.
6.How does Aetrix verify that ISL88012IH546Z-TK is sourced from the original manufacturer or authorized distributors?
All ISL88012IH546Z-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 ISL88012IH546Z-TK meets industry standards.
7.What is the process for return or replacement of ISL88012IH546Z-TK?
All ISL88012IH546Z-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL88012IH546Z-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 ISL88012IH546Z-TK part is unused and in its original packaging.
Return procedure for ISL88012IH546Z-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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