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Renesas ISL6132IR
- Part No.:
- ISL6132IR
- Manufacturer:
- Renesas
- Category:
- Supervisors
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
ISL6132IR.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL 24VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL6132IR from Intersil is a dual-channel overvoltage and undervoltage supervisor IC designed for precise window voltage monitoring in power management systems. It monitors two independent voltage rails using four VMON inputs (UV/ OV pairs), features open-drain STATUS and PGOOD outputs, 160ms stability delay, and operates from 1.5V to 5.5V supply. It is used in multivoltage DSPs, graphics cards, and telecom systems requiring reliable rail validation.
For engineers reviewing the ISL6132IR datasheet, ISL6132IR pinout, ISL6132IR application, or ISL6132IR equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in the FN9119 Rev 6.00 datasheet and official Intersil documentation.
Technical Context
The ISL6132IR implements dual independent voltage monitoring channels (AB and CD), each with dedicated UV and OV inputs referenced to an internal 0.633V bandgap. Each channel generates separate UVSTATUS/OVSTATUS outputs and its own PGOOD signal (PGOOD1/PGOOD2) that asserts only when both UV and OV conditions are simultaneously satisfied within the programmed window.
It uses a 30µs glitch filter on all VMON inputs to reject transients, guarantees valid STATUS/PGOOD operation down to VDD <1V during bias-up/down, and incorporates VDD lock-out circuitry with POR thresholds at 0.89V (falling) and 0.91V (rising). All outputs are open-drain, enabling wired-OR logic and flexible level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Supply Range | 1.5V to 5.5V - supports direct interface with common logic and analog supply rails without external regulation. |
| VMON Threshold Voltage | 633mV ±14mV - fixed internal reference enables accurate resistor-divider-based trip point programming. |
| Stability Delay | 160ms - ensures monitored supplies settle before asserting STATUS/PGOOD, preventing false power-good signals. |
| VMON Glitch Filter | 30µs - suppresses short-duration noise spikes on input rails, avoiding spurious resets. |
| Output Type | Open-drain STATUS and PGOOD - allows OR-ing multiple supervisors and interfacing with diverse logic families up to VDD. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and embedded applications with wide ambient range requirements. |
| Supply Current | 100µA at 1.5V - ultra-low quiescent current preserves battery life in portable equipment. |
Pinout & Package
The ISL6132IR is housed in a 24-lead 4mm × 4mm QFN package (JEDEC MO-220, pkg drawing L24.4x4) with exposed thermal pad (PD) that must be connected to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 23) | IC Bias Supply | Accepts 1.5V–5.5V; powers internal circuitry and defines output high-level reference. |
| GND (Pin 10) | Ground Reference | Primary return path for all internal circuits and VMON divider currents. |
| VMON_A (Pin 12) | UV Input Channel 1 | Undervoltage monitor for AB pair; compares divided rail to 0.633V reference. |
| VMON_B (Pin 17) | OV Input Channel 1 | Overvoltage monitor for AB pair; same reference, used with VMON_A to define window. |
| VMON_C (Pin 14) | UV Input Channel 2 | Undervoltage monitor for CD pair; independent of AB channel. |
| VMON_D (Pin 20) | OV Input Channel 2 | Overvoltage monitor for CD pair; completes second independent window monitor. |
| PGOOD1 (Pin 24) | Power-Good Output AB | Open-drain signal high only when AB pair voltages are within programmed UV/OV limits. |
| PGOOD2 (Pin 9) | Power-Good Output CD | Open-drain signal high only when CD pair voltages are within programmed UV/OV limits. |
| EN1 (Pin 1) | Enable Input AB | Active-high control for AB monitoring channel; internally pulled up to VDD. |
| EN2 (Pin 11) | Enable Input CD | Active-high control for CD monitoring channel; independently disables CD status reporting. |
| UVSTATUS_1 (Pin 2) | UV Status AB | Open-drain output indicating AB UV condition met; low = fault, high = OK after 160ms delay. |
| OVSTATUS_1 (Pin 5) | OV Status AB | Open-drain output indicating AB OV condition met; low = fault, high = OK after 160ms delay. |
| UVSTATUS_2 (Pin 6) | UV Status CD | Open-drain output indicating CD UV condition met; independent timing and state. |
| OVSTATUS_2 (Pin 7) | OV Status CD | Open-drain output indicating CD OV condition met; fully decoupled from AB channel. |
| PD (Thermal Pad) | Thermal & Electrical Ground | Exposed copper pad under package; must be soldered to GND plane for thermal dissipation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Independent Window Monitors | Two fully isolated UV/OV channels (AB and CD) enable simultaneous validation of two critical rails - e.g., 5V and 12V - without cross-talk or shared timing constraints. |
| VDD <1V Output Validity | STATUS and PGOOD remain logically valid even as VDD drops below 1V, ensuring deterministic reset behavior during brownout and power-down sequences. |
| Programmable Thresholds via Resistive Dividers | Uses external resistor networks to set UV/OV trip points - e.g., 3.3V ±20% - with no trimming required, reducing BOM count and calibration effort. |
| Glitch Immunity & Lock-Out Protection | 30µs input filtering rejects EMI-induced transients; VDD lock-out prevents false assertions during supply ramp-up/ramp-down. |
| QFN-24 4×4mm Package | Near-chip-scale footprint improves PCB density and thermal performance while maintaining compatibility with standard reflow profiles (Pb-free). |
Applications
| Graphics Card Power Validation | Telecom System Rail Monitoring |
|---|---|
Use Scenario: Verifying stable 12V and 5V rails on GPU reference designs before enabling PCIe link training and memory initialization. IC Role / Device Role / Timing Role: ISL6132IR acts as dual-rail window supervisor, generating PGOOD1/PGOOD2 only when both rails meet ±10% tolerance windows, gating downstream power sequencing. Use Value: Prevents GPU firmware crash due to marginal rail conditions by enforcing strict pre-boot validation with 160ms stabilization delay. | Use Scenario: Monitoring primary and backup DC supplies in network routers to ensure failover readiness and prevent data corruption during supply transitions. IC Role / Device Role / Timing Role: ISL6132IR supervises 48V input and 3.3V system rail independently, asserting separate PGOOD signals to FPGA configuration logic and watchdog circuitry. Use Value: Enables deterministic power-fail detection and controlled switchover using open-drain outputs compatible with 3.3V and 5V logic domains. |
| Medical Imaging Equipment | Industrial Embedded Controller |
Use Scenario: Ensuring compliance of high-precision analog supply rails (e.g., ±15V, +5V) in MRI front-end signal chains prior to ADC sampling activation. IC Role / Device Role / Timing Role: ISL6132IR monitors dual rails with UV/OV thresholds set via precision resistors; STATUS outputs feed into safety-critical interlock logic. Use Value: Guarantees measurement integrity by blocking acquisition until both rails are within 1% of nominal, leveraging 0.633V reference stability and low TC (40µV/°C). | Use Scenario: Validating 24V field bus and 3.3V microcontroller core supply in PLC I/O modules operating in harsh factory environments. IC Role / Device Role / Timing Role: ISL6132IR provides rail supervision with EN1/EN2 enabling dynamic channel disable during sleep mode, reducing system standby current. Use Value: Achieves <100µA total system standby by combining low-quiescent ISL6132IR (100µA @ 1.5V) with selective channel shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-window voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6816ESE+ | Single-channel UV/OV supervisor with 200ms delay; no dual independent PGOOD outputs; SO-8 package. | Lacks second monitoring channel and separate PGOOD2 - requires two devices for dual-rail coverage. | Select when only one rail needs window supervision and board space permits SO-8 layout. |
| TPS3808G33DBVR | Single-supply UV supervisor only; no overvoltage detection; 200ms delay; SOT-23-6 package. | Cannot perform window monitoring - only detects undervoltage faults; unsuitable for OV-critical applications like telecom rectifiers. | Choose only for cost-sensitive single-rail UV-only use cases where OV protection is handled externally. |
Compared with MAX6816ESE+ and TPS3808G33DBVR, the ISL6132IR uniquely integrates two independent UV/OV channels with dedicated PGOOD outputs in a single 4×4mm QFN, eliminating inter-channel timing dependencies and reducing component count by 50% in dual-rail systems.
Availability
ISL6132IR is available at Aetrix Electronics and suitable for graphics card power validation, telecom system rail monitoring, medical imaging equipment, and industrial embedded controller applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL6132IR 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 leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, infrastructure, computing, and consumer markets with robust, precision timing and supervision solutions.
The ISL6132IR belongs to Intersil's multiple-voltage supervisory IC product line, engineered specifically for reliable, resistor-programmable window monitoring in multirail power systems where deterministic power-up sequencing and fault isolation are critical.
FAQ
What is the exact function of the ISL6132IR in a dual-rail power system?
The ISL6132IR serves as a dual independent window voltage supervisor: it monitors two separate voltage rails (e.g., 5V and 12V) using dedicated UV/OV input pairs (VMON_A/B and VMON_C/D), generating individual PGOOD1 and PGOOD2 signals only when each rail remains within its programmed upper and lower thresholds. This enables precise, isolated validation of critical supplies before system enablement - a core requirement in graphics cards and telecom equipment. The ISL6132IR achieves this with no shared timing or logic between channels.
How does the ISL6132IR handle power supply transients during startup or load changes?
The ISL6132IR incorporates a 30µs glitch filter on all VMON inputs to suppress short-duration transients, preventing false UV/OV assertions. Combined with a 160ms stability delay before releasing STATUS and PGOOD, it ensures monitored rails are truly stable before signaling "power good." Additionally, its VDD lock-out circuitry (with 0.89V falling and 0.91V rising thresholds) blocks premature assertion during VDD ramp-up. These features make the ISL6132IR highly robust in noisy industrial and telecom environments.
Can the ISL6132IR monitor negative voltages, and if so, how?
Yes - the ISL6132IR can monitor negative voltages because its VMON inputs detect any voltage more positive than its GND pin. To supervise a -12V rail, connect the rail to a VMON input through a resistor divider referenced to system ground, while biasing the ISL6132IR's own GND to the same ground. The internal 0.633V reference remains valid, and trip points scale linearly with the divider ratio. This technique is documented in the FN9119 datasheet (Page 7) and has been validated in negative-voltage monitoring applications.
What is the role of the thermal pad (PD) on the ISL6132IR QFN package?
On the ISL6132IR, the exposed thermal pad (PD) serves both thermal and electrical functions: it must be soldered to a GND plane to provide a low-impedance path for heat dissipation (θJC = 9°C/W) and to reduce noise coupling into sensitive analog comparators. The datasheet explicitly states "Thermal Pad. Should be electrically connected to GND" (Page 3), and omitting this connection risks thermal overload and degraded UV/OV threshold accuracy due to localized heating. Proper PD grounding is mandatory for full specification compliance.
How do EN1 and EN2 pins affect the ISL6132IR's monitoring behavior?
EN1 and EN2 are active-high enable inputs controlling their respective monitoring channels: EN1 enables/disables the AB pair (VMON_A/B, UVSTATUS_1, OVSTATUS_1, PGOOD1), while EN2 controls the CD pair (VMON_C/D, UVSTATUS_2, OVSTATUS_2, PGOOD2). When pulled low, each EN pin forces its associated STATUS and PGOOD outputs low, halting monitoring for that channel. Both pins are internally pulled up to VDD, so they default to enabled. This allows dynamic, software-controlled supervision - e.g., disabling CD monitoring during low-power sleep modes while keeping AB active - a key feature for energy-efficient embedded systems using the ISL6132IR.
ISL6132IR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
ISL6132IR FAQ
1.How can I place an order for ISL6132IR through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6132IR 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 ISL6132IR reliable?
The price and inventory of ISL6132IR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6132IR is usually 5 days.
3.What payment methods are accepted for ISL6132IR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6132IR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6132IR?
ISL6132IR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6132IR 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 ISL6132IR?
For technical support, including ISL6132IR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6132IR requirements.
6.How does Aetrix verify that ISL6132IR is sourced from the original manufacturer or authorized distributors?
All ISL6132IR 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 ISL6132IR meets industry standards.
7.What is the process for return or replacement of ISL6132IR?
All ISL6132IR units undergo pre-shipment inspection (PSI). If there is an issue with ISL6132IR, 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 ISL6132IR part is unused and in its original packaging.
Return procedure for ISL6132IR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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