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Renesas ISL6410AIU
- Part No.:
- ISL6410AIU
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL6410AIU.pdf
- Description:
- IC REG BUCK PROG 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,309
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Product details
Overview
ISL6410AIU from Intersil is a single synchronous buck regulator IC with integrated N- and P-channel MOSFETs, designed for 5.0V ±10% input voltage conversion to pin-programmable outputs of 3.3V, 1.8V, or 1.2V. It delivers up to 600mA continuous output current, operates at 750kHz typical switching frequency, and includes power-good (PG), enable (EN), and synchronization (SYNC) functions. It serves as a compact DC-DC solution for FPGA core supplies in WLAN cards and DSL equipment.
For engineers reviewing the ISL6410AIU datasheet, ISL6410AIU pinout, ISL6410AIU application, or ISL6410AIU equivalent, this page provides verified technical context, confirmed pin roles, exact output voltage programming behavior, thermal shutdown thresholds, and validated alternative options for 5V-input point-of-load regulation.
Technical Context
The ISL6410AIU implements peak current-mode PWM control with internal slope compensation and a fixed 0.45V reference. Its integrated high-side PMOS and low-side NMOS switches (230mΩ rDS(ON) each) enable synchronous rectification, eliminating external diodes and improving efficiency to 93% at 200mA (5V→3.3V).
It supports external clock synchronization from 500kHz to 1MHz on the SYNC pin, features a 5.5ms soft-start duration, and embeds comprehensive protection: UVLO (4.27–4.45V rising threshold), overcurrent limiting (700–1300mA peak), overvoltage shutdown (>30% VOUT), and thermal shutdown at 150°C with 20–25°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 5.5V - matches standard 5V rail with ±10% tolerance; triggers UVLO below 4.27V. |
| Output Voltage Options | 3.3V (VSET = H), 1.8V (VSET = OPEN), or 1.2V (VSET = L) - selected via direct pin connection, no external resistors required. |
| Continuous Output Current | 600mA - sufficient for low-power FPGA I/O banks or DSP cores without external current boosting. |
| Switching Frequency | 620–860kHz (typ. 750kHz) - enables use of small 12µH inductors and ceramic capacitors; supports external sync up to 1MHz. |
| Efficiency | 93% at 200mA (5V→3.3V) - reduces thermal load in space-constrained modules like WLAN cards. |
| Thermal Shutdown | 150°C activation with 20–25°C hysteresis - prevents latch-up during transient overload and allows safe recovery. |
| Power-Good Accuracy | ±8.0% VOUT window - asserts PG high only when output stabilizes within regulation band, enabling reliable system sequencing. |
Pinout & Package
ISL6410AIU is housed in a 10-lead MSOP package (JEDEC MO-187BA, pkg drawing M10.118), measuring 3.0mm × 3.0mm × 0.85mm, with exposed pad for thermal enhancement. Pin 1 is marked by a dot or bevelled corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply | 5.0V ±10% input; powers control circuitry and gate drivers; requires local 1µF decoupling. |
| PVCC | Power MOSFET supply | Provides dedicated voltage to internal FET gates; must be decoupled with 1µF capacitor near pin. |
| GND | Analog ground reference | Reference for error amplifier, oscillator, and logic; must be separated from PGND to avoid noise coupling. |
| PG | Open-drain power-good indicator | Active-high when VOUT is within ±8.0%; requires external pull-up to VIN for 5V logic compatibility. |
| FB | Feedback input | Connected directly to VOUT for closed-loop regulation; internal 0.45V reference sets output voltage. |
| PGND | Power ground return | Low-impedance return path for inductor current and internal FET sources; connects to PCB ground plane under exposed pad. |
| L | Switch node | Drain junction of internal FETs; connects to external inductor; carries high dv/dt switching waveform. |
| EN | Enable control | Logic-high (>70% VIN) enables regulation; logic-low (<30% VIN) shuts down IC, reducing quiescent current to ≤10µA. |
| SYNC | External clock input | Accepts CMOS-level signal (500–1000kHz); device auto-synchronizes to first rising edge and reverts to internal oscillator if signal stops. |
| VSET | Output voltage select | Configures output: tied to VIN → 3.3V; floating → 1.8V; tied to GND → 1.2V (per Table 1 in FN9149 Rev 3.00). |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated synchronous buck | Eliminates external MOSFETs and catch diode - reduces BOM count and layout area by ≥4 components. |
| Pin-programmable output voltages | Three fixed outputs (3.3V/1.8V/1.2V) set without feedback resistors - simplifies design and improves accuracy vs. resistor-divider drift. |
| Stable with ceramic output capacitors | Supports low-ESR ceramics ≥10µF - avoids bulkier, higher-ESR tantalum or electrolytic capacitors and improves transient response. |
| Internal slope-compensated current-mode control | Enables stable operation across full load range without external compensation network - reduces design iteration time. |
| Reset supervisory block (RESET) | Monitors VIN and asserts push-pull RESET for ≥25ms after undervoltage event - ensures clean microprocessor reset without external supervisor IC. |
Applications
| WLAN Baseband Processor Supply | DVD Player ASIC Core Rail |
|---|---|
Use Scenario: Powering baseband processor in 802.11n WLAN card requiring clean, sequenced 1.8V supply from 5V main rail. IC Role / Device Role / Timing Role: Primary point-of-load regulator providing regulated 1.8V output; PG signals host controller when rail is stable. Use Value: Integrated FETs and 750kHz switching allow compact 3mm × 3mm layout; 93% efficiency minimizes heat in sealed enclosure. |
Use Scenario: Generating 1.2V core voltage for MPEG decoder ASIC in consumer DVD player with tight thermal budget. IC Role / Device Role / Timing Role: Synchronous buck converter with VSET = GND to fix 1.2V output; RESET monitors 5V input for safe boot sequencing. Use Value: Internal current sensing and thermal shutdown prevent damage during short-circuit events; MSOP package fits dense front-panel PCB. |
| DSL Modem PHY Interface | Industrial FPGA I/O Bank Regulator |
Use Scenario: Delivering 3.3V to PHY transceiver in ADSL2+ modem operating from 5V wall adapter with variable line conditions. IC Role / Device Role / Timing Role: Fixed 3.3V output regulator (VSET = VIN); UVLO and PG ensure operation only within valid input range. Use Value: 4.27V UVLO rising threshold prevents erratic startup during brownout; 600mA rating covers peak PHY transmit current. |
Use Scenario: Providing isolated 1.8V supply to Spartan-6 FPGA I/O banks in industrial control module with extended temperature requirements. IC Role / Device Role / Timing Role: Compact DC-DC solution with -40°C to +85°C ambient rating; EN pin enables firmware-controlled power cycling. Use Value: MSOP package withstands reflow and vibration; 150°C thermal shutdown protects FPGA during overtemperature faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3-MHz fixed-frequency, 600mA, 5V-input; uses external feedback resistors; no VSET pin or integrated RESET. | Requires resistor divider for output setting; lacks built-in reset supervision and power-good polarity matching for 5V logic. | Choose when higher switching frequency (3MHz) and smaller inductors are prioritized over pin-programmability and integrated reset. |
| RT8059NGSP | 2-MHz, 600mA, 5V-input; supports adjustable output via resistor divider; includes PG but no RESET; different enable threshold (1.25V fixed). | Needs external resistors for 3.3V/1.8V/1.2V; PG is open-drain but referenced to VOUT, not VIN - incompatible with 5V logic pull-up. | Prefer when board space allows resistor-based tuning and system already provides discrete reset monitoring. |
Compared with TPS62231DRVR and RT8059NGSP, the ISL6410AIU uniquely combines pin-selectable outputs, 5V-compatible PG and RESET, and integrated thermal/overcurrent protection - reducing component count and simplifying compliance with strict sequencing requirements in telecom and embedded systems.
Availability
ISL6410AIU is available at Aetrix Electronics and suitable for WLAN cards, DSL modems, DVD player ASICs, and industrial FPGA power supplies requiring stable component supply, long-term lifecycle support, and Pb-free manufacturing compliance.
Supply support for ISL6410AIU 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 U.S.-based analog and power management IC designer known for high-efficiency DC-DC solutions and precision analog products.
The ISL6410AIU belongs to Intersil's single-channel synchronous buck regulator product line, engineered specifically for low-noise, space-constrained point-of-load conversion in digital consumer and communications equipment.
FAQ
What input voltage range does the ISL6410AIU support?
The ISL6410AIU supports an input voltage range of 4.5V to 5.5V, corresponding to a nominal 5.0V ±10% supply. Its undervoltage lockout (UVLO) activates below 4.27V (rising threshold), ensuring reliable startup only within specification. This makes ISL6410AIU appropriate for systems powered by regulated 5V rails, such as DSL modems and WLAN baseband boards.
How is the output voltage configured on the ISL6410AIU?
The ISL6410AIU uses the VSET pin to select one of three fixed output voltages: tie VSET to VIN for 3.3V, leave it open for 1.8V, or connect it to GND for 1.2V. This pin-programmable method eliminates external feedback resistors and associated tolerance errors. The configuration is defined in Table 1 of the FN9149 datasheet and applies exclusively to the ISL6410AIU variant.
Does the ISL6410AIU include power-good and reset functionality?
Yes, the ISL6410AIU integrates both power-good (PG) and reset (RESET) functions. PG is an open-drain output active high when VOUT is within ±8.0% of target; RESET is a push-pull output that asserts low for ≥25ms during VIN undervoltage. Both signals are fully functional on ISL6410AIU and referenced to the 5V input domain, matching system-level logic requirements.
What package type and thermal characteristics does the ISL6410AIU have?
The ISL6410AIU is supplied in a 10-lead MSOP package (M10.118, JEDEC MO-187BA) with θJA = 128°C/W. It operates from -40°C to +85°C ambient and includes thermal shutdown at 150°C with 20–25°C hysteresis. The exposed pad enhances thermal performance and must be soldered to a thermal pad on the PCB for optimal reliability.
Can the ISL6410AIU be synchronized to an external clock?
Yes, the ISL6410AIU accepts an external CMOS clock signal on the SYNC pin across 500kHz to 1MHz. It automatically locks to the first rising edge and reverts to its internal 750kHz oscillator if the external signal stops for four consecutive cycles. This capability enables EMI reduction through frequency dithering or system-level clock alignment in multi-rail designs using ISL6410AIU.
ISL6410AIU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V, 1.8V, 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 750kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
ISL6410AIU FAQ
1.How can I place an order for ISL6410AIU through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6410AIU 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 ISL6410AIU reliable?
The price and inventory of ISL6410AIU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6410AIU is usually 5 days.
3.What payment methods are accepted for ISL6410AIU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6410AIU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6410AIU?
ISL6410AIU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6410AIU 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 ISL6410AIU?
For technical support, including ISL6410AIU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6410AIU requirements.
6.How does Aetrix verify that ISL6410AIU is sourced from the original manufacturer or authorized distributors?
All ISL6410AIU 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 ISL6410AIU meets industry standards.
7.What is the process for return or replacement of ISL6410AIU?
All ISL6410AIU units undergo pre-shipment inspection (PSI). If there is an issue with ISL6410AIU, 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 ISL6410AIU part is unused and in its original packaging.
Return procedure for ISL6410AIU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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