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Renesas ISL6410IU
- Part No.:
- ISL6410IU
- Manufacturer:
- Renesas
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL6410IU.pdf
- Description:
- IC REG BUCK PROG 600MA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:790
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Product details
Overview
ISL6410IU from Intersil is a single synchronous buck regulator with integrated N- and P-channel MOSFETs, designed for 3.3V ±10% input voltage and delivering pin-programmable output voltages of 1.2V, 1.5V, or 1.8V at up to 600mA continuous current. It operates at 750kHz typical switching frequency, features internal slope-compensated peak current-mode control, and includes power-good (PG), enable (EN), and synchronization (SYNC) functions for embedded power management in microcontrollers and FPGAs.
For engineers reviewing the ISL6410IU datasheet, ISL6410IU pinout, ISL6410IU application, or ISL6410IU equivalent, this device serves as a compact, fully integrated DC-DC solution requiring minimal external components-ideal for space-constrained designs needing stable low-voltage rails with thermal shutdown, overcurrent protection, and precise UVLO thresholds.
Technical Context
The ISL6410IU implements peak current-mode PWM control with internal slope compensation and a fixed 0.45V reference voltage at the FB pin. Its integrated high-side PMOS (230mΩ rDS(ON)) and low-side NMOS (230mΩ rDS(ON)) enable synchronous rectification, eliminating the need for an external Schottky diode and improving efficiency to 92% at 200mA (VIN=3.3V, VOUT=1.8V).
It supports external clock synchronization from 500kHz to 1MHz via the SYNC pin, provides soft-start (5.5ms typical), and integrates a reset supervisor with 25ms timeout (CT-pin configurable). The PG signal asserts high when output reaches 94.5% of nominal value, and UVLO triggers at 2.62V (rising) and 2.53V (falling) for reliable startup under varying input conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 3.6V - matches standard 3.3V ±10% supply rails; enables direct use without pre-regulation. |
| Output Voltage Options | 1.2V / 1.5V / 1.8V - selected by VSET pin state (low/open/high); eliminates need for external feedback resistors. |
| Continuous Output Current | 600mA - sufficient for powering core logic in CPLDs, FPGAs, and low-power microcontrollers. |
| Switching Frequency | 750kHz typical - allows use of small 8.2µH inductors and ceramic capacitors, reducing board area and cost. |
| Efficiency | 92% at 200mA (VIN=3.3V, VOUT=1.8V) - minimizes thermal dissipation in thermally constrained applications. |
| UVLO Threshold | 2.62V (rising), 2.53V (falling) - ensures clean startup and hold-off during brown-out conditions. |
| Thermal Shutdown | 150°C rising threshold with 20–25°C hysteresis - protects against sustained overload or poor heatsinking. |
Pinout & Package
ISL6410IU is housed in a 10-lead MSOP package (JEDEC MO-187BA, pkg drawing M10.118), measuring 3.0mm × 3.0mm × 1.0mm, with exposed pad not present (unlike QFN variants). Pin 1 is marked by a dot or notch; the package is Pb-free compatible and rated for -40°C to +85°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Main input supply rail | Accepts 3.3V ±10%; requires local 1µF decoupling; powers control circuitry and gate drivers. |
| GND | Analog ground reference | Small-signal ground for error amplifier and oscillator; must be separated from PGND to avoid noise coupling. |
| PGND | Power ground return | High-current return path for MOSFETs and inductor; connects directly to PCB power plane. |
| L | Switch node | Drain junction of internal MOSFETs; connects externally to inductor; carries high dv/dt switching waveform. |
| PVCC | Power MOSFET supply | Provides gate drive voltage for internal FETs; requires dedicated 1µF decoupling near pin. |
| FB | Feedback input | Monitors output voltage; internally referenced to 0.45V; used only in custom-resistor configurations (not required for pin-programmed outputs). |
| VSET | Output voltage select | Logic-level input: tied low → 1.2V, open → 1.5V, tied high → 1.8V; no external resistor needed. |
| EN | Enable control | Active-high logic input; pulls up via 10kΩ to VIN; <10µA shutdown current at 25°C. |
| SYNC | External clock sync | Accepts CMOS-level clock (500–1000kHz); auto-detects rising edge; reverts to internal oscillator if sync lost. |
| PG | Power-good indicator | Open-drain output; pulled up to VIN; asserts high when VOUT ≥94.5% of target; used for system sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Fully integrated synchronous buck | Eliminates external diode and reduces BOM count; achieves >92% efficiency without external MOSFETs. |
| Pin-programmable output voltage | Three fixed outputs (1.2V/1.5V/1.8V) set solely by VSET logic state-no feedback resistors or trimming required. |
| Internal slope-compensated current-mode control | Ensures stable operation across line/load variations without external compensation network. |
| Integrated reset supervisor with CT-timed timeout | Generates 25ms reset pulse (configurable via CT capacitor) to ensure proper microprocessor initialization. |
| Comprehensive protection suite | Includes UVLO, overcurrent limiting (700–1300mA peak), overvoltage shutdown, and thermal shutdown with hysteresis. |
Applications
| Microcontroller Core Supply | FPGA I/O Bank Regulation |
|---|---|
Use Scenario: Powering ARM Cortex-M series MCUs requiring stable 1.8V core rail from a 3.3V system bus. IC Role / Device Role / Timing Role: Primary DC-DC converter providing regulated core voltage with soft-start and power-good sequencing. Use Value: Enables deterministic MCU boot via PG assertion and prevents brown-out resets using precise 2.62V UVLO. |
Use Scenario: Delivering 1.5V to Spartan-6 FPGA I/O banks where tight voltage tolerance and low ripple are critical. IC Role / Device Role / Timing Role: Fixed-output buck regulator with ceramic-capacitor stability and 92% efficiency at partial load. Use Value: Reduces thermal load on dense PCBs while maintaining <±1.5% output accuracy across -40°C to 85°C. |
| DSP Digital Signal Processor Rail | ASIC Logic Core Power |
Use Scenario: Supplying 1.2V to TI C6000 DSP cores operating at 300MHz with dynamic current bursts. IC Role / Device Role / Timing Role: High-frequency (750kHz) synchronous regulator supporting fast transient response via current-mode control. Use Value: Delivers 600mA continuous and handles 1300mA peak current surges without foldback or shutdown. |
Use Scenario: Generating 1.8V for ASIC logic blocks in DVD decoder SoCs with strict EMI limits. IC Role / Device Role / Timing Role: Compact DC-DC solution with low-noise switching profile and integrated MOSFETs to minimize radiated emissions. Use Value: Meets CISPR-22 Class B EMI requirements without added shielding due to controlled dv/dt and 750kHz fundamental. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3MHz fixed-frequency, 600mA, 1.8V/1.5V/1.2V pin-selectable; smaller 2mm × 2mm WSON package; no integrated reset supervisor. | Lacks CT-configurable reset timeout and thermal shutdown hysteresis; optimized for ultra-thin portable devices rather than industrial embedded systems. | Choose TPS62231DRYR when board space is critical and reset supervision is handled externally. |
| RT8059NGQW | 2.5MHz, 600mA, 1.2V/1.5V/1.8V pin-programmable; includes light-load pulse-skipping mode; no SYNC pin or PG output. | Higher switching frequency reduces inductor size but increases switching losses; lacks power-good signaling for system sequencing. | Choose RT8059NGQW when efficiency at light loads matters more than system-level power sequencing capability. |
Compared with TPS62231DRYR and RT8059NGQW, the ISL6410IU offers unique integration of power-good signaling, external clock synchronization, and a configurable reset supervisor-all in a proven MSOP package-making it optimal for industrial and communications equipment where reliability and timing coordination are essential.
Availability
ISL6410IU is available at Aetrix Electronics and suitable for microcontroller core supplies, FPGA I/O regulation, DSP power rails, ASIC logic cores, and DVD/DSL subsystems requiring stable component supply and long-term manufacturability.
Supply support for ISL6410IU 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-reliability DC-DC solutions targeting industrial, computing, and communications markets.
The ISL6410IU belongs to Intersil's single-channel synchronous buck regulator product line, engineered specifically for low-noise, high-efficiency point-of-load conversion in resource-constrained embedded systems with demanding thermal and sequencing requirements.
FAQ
What input voltage range does the ISL6410IU support?
The ISL6410IU supports an input voltage range of 3.0V to 3.6V, aligned with 3.3V ±10% system rails. Its UVLO circuit activates below 2.62V (rising) and releases above 2.53V (falling), ensuring robust startup behavior. This range is strictly defined for the ISL6410 variant; the ISL6410A version uses 4.5V–5.5V and is not interchangeable with the ISL6410IU.
How is the output voltage configured on the ISL6410IU?
The ISL6410IU output voltage is set by the logic state of the VSET pin: tied low → 1.2V, left open → 1.5V, tied high → 1.8V. No external feedback resistors are required. The FB pin remains unused in pin-programmed mode but can be repurposed for custom output voltages if needed, referencing the internal 0.45V bandgap.
Does the ISL6410IU include overcurrent protection?
Yes, the ISL6410IU includes cycle-by-cycle overcurrent protection that monitors inductor current via internal sensing. Peak current limit is 700–1300mA. Exceeding the limit increments a 4-bit counter; reaching 1111 disables PWM output and initiates soft-start recovery after 16 clock cycles-preventing latch-up while enabling automatic recovery.
Can the ISL6410IU be synchronized to an external clock?
Yes, the ISL6410IU accepts an external CMOS clock signal on the SYNC pin across 500kHz–1MHz. It auto-detects the first rising edge and synchronizes seamlessly. If the external clock stops, the device reverts to its internal 750kHz oscillator within four cycles-ensuring uninterrupted operation without glitch or dropout.
What is the purpose of the CT pin on the ISL6410IU?
The CT pin is not present on the ISL6410IU; it exists only on the QFN variants (e.g., ISL6410IR). The ISL6410IU uses a fixed 25ms reset timeout and does not require an external timing capacitor. Confusion may arise from datasheet figures showing both packages-always verify pin count and package type before layout.
ISL6410IU 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):
- 3V
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 1.2V, 1.5V, 1.8V
- 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
ISL6410IU FAQ
1.How can I place an order for ISL6410IU through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6410IU 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 ISL6410IU reliable?
The price and inventory of ISL6410IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6410IU is usually 5 days.
3.What payment methods are accepted for ISL6410IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6410IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6410IU?
ISL6410IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6410IU 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 ISL6410IU?
For technical support, including ISL6410IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6410IU requirements.
6.How does Aetrix verify that ISL6410IU is sourced from the original manufacturer or authorized distributors?
All ISL6410IU 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 ISL6410IU meets industry standards.
7.What is the process for return or replacement of ISL6410IU?
All ISL6410IU units undergo pre-shipment inspection (PSI). If there is an issue with ISL6410IU, 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 ISL6410IU part is unused and in its original packaging.
Return procedure for ISL6410IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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