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Renesas ISL9104AIRUDZ-T7A
- Part No.:
- ISL9104AIRUDZ-T7A
- Manufacturer:
- Renesas
- Package:
- 6-UFDFN
- Datasheet:
-
ISL9104AIRUDZ-T7A.pdf
- Description:
- IC REG BUCK 2V 500MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,974
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Product details
Overview
ISL9104AIRUDZ-T7A from Renesas (formerly Intersil) is a 500mA, 4.3MHz synchronous buck DC-DC converter optimized for low-voltage microprocessor power in space-constrained portable devices. It delivers a fixed 2.0V output from 2.7–6.0V input, features 20µA quiescent current in skip mode, 100% duty-cycle operation for <300mV dropout at 500mA, and integrated P/N-channel MOSFETs. It is used in WCDMA handsets and Li+-powered instrumentation.
For engineers reviewing the ISL9104AIRUDZ-T7A datasheet, ISL9104AIRUDZ-T7A pinout, ISL9104AIRUDZ-T7A application, or ISL9104AIRUDZ-T7A equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives with functional distinctions, and supply-chain support for production ramp-up.
Technical Context
The ISL9104AIRUDZ-T7A employs peak-current-mode PWM control with internal slope compensation for fast transient response and cycle-by-cycle current limiting. Its ultrasonic skip mode (enabled in ISL9104A variants) operates below audible range to eliminate noise in sensitive audio environments.
It integrates low-RDS(on) P-Channel (0.45Ω typ @ 3.6V) and N-Channel (0.4Ω typ @ 3.6V) MOSFETs, supports 100% duty-cycle low-dropout operation, and includes zero-cross detection for automatic PFM/PWM mode transition based on load current thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Guaranteed 500mA continuous - supports core logic rails in mobile SoCs without external current boosting. |
| Switching Frequency | 4.3MHz ±0.7MHz - enables use of 1.0µH inductors and 4.7µF ceramic caps, reducing solution size to <0.5cm². |
| Quiescent Current | 20µA typical in skip mode - extends battery runtime in standby states of handheld devices. |
| Input Voltage Range | 2.7V to 6.0V - compatible with single Li+ cell (2.7–4.2V), three NiMH cells, or regulated 5V supplies. |
| Output Voltage | Fixed 2.0V ±3% - precision-regulated for I/O or auxiliary rails requiring stable low-voltage bias. |
| Duty Cycle Max | 100% - maintains regulation down to VIN = VOUT + dropout (≤300mV @ 500mA), maximizing usable battery range. |
| Shutdown Current | 0.05µA typical - ensures near-zero leakage during system sleep, critical for always-on sensors. |
Pinout & Package
ISL9104AIRUDZ-T7A is housed in a RoHS-compliant 6-pin 1.6mm × 1.6mm µTDFN package with wettable flanks, optimized for high-density PCB layouts and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2.7–6.0V; requires local 4.7µF ceramic decoupling to minimize switching noise injection into source rail. |
| EN (Pin 2) | Logic enable | Active-high digital control; pulls FB low via internal bleeding FET when disabled to rapidly discharge output capacitance. |
| NC (Pin 3) | No-connect | Internally unconnected; must be left floating per datasheet - no tie-to-ground or pull-up allowed. |
| FB (Pin 4) | Feedback reference | Internally tied to 2.0V output for fixed-version operation; not configurable - bypasses external resistor divider. |
| GND (Pin 5) | Power ground | Primary return path for high-frequency switch current; must connect to solid ground plane beneath IC footprint. |
| SW (Pin 6) | Switch node | Connects to inductor high-side terminal; carries high di/dt square wave - requires shortest possible trace to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrasonic skip mode | Eliminates audible coil whine in portable audio systems by shifting PFM frequency above 20kHz (ISL9104A-specific). |
| Integrated MOSFETs | P-Channel (0.45Ω) + N-Channel (0.4Ω) switches reduce BOM count and improve efficiency vs. external-FET solutions. |
| Internal digital soft-start | 1.0ms controlled voltage ramp prevents inrush current and avoids brownout during power-up sequencing. |
| Output capacitor discharge | Active bleeding FET discharges output to <1% VOUT within 1ms of EN deactivation - meets safety and reset timing requirements. |
| Thermal shutdown | 130°C trip with 30°C hysteresis ensures reliable overtemperature recovery without latch-up or manual reset. |
Applications
| Mobile Handset Power | Portable Instrumentation |
|---|---|
Use Scenario: Powering baseband processor I/O banks and RF front-end bias rails in WCDMA handsets. IC Role / Device Role / Timing Role: Primary 2.0V point-of-load regulator delivering clean, low-noise supply with fast load transient response. Use Value: Ultrasonic skip mode prevents audible interference during voice calls; 20µA IQ extends talk time between charges. |
Use Scenario: Supplying analog sensor interfaces and low-power MCU peripherals in handheld test equipment. IC Role / Device Role / Timing Role: Fixed-output buck converter providing stable 2.0V rail for precision ADC references and op-amp biasing. Use Value: 3% output accuracy over temperature ensures measurement repeatability; 100% duty cycle sustains operation as battery discharges to 2.3V. |
| Li-ion Powered PDAs | MP3 Player Audio Subsystem |
Use Scenario: Generating core logic voltage for ARM-based PDA application processors under dynamic workload. IC Role / Device Role / Timing Role: High-efficiency synchronous buck regulator managing variable load from 1mA (idle) to 500mA (video decode). Use Value: Automatic PFM→PWM mode transition maintains >85% efficiency across full load range; small 1.6×1.6mm footprint saves board area. |
Use Scenario: Powering DAC, headphone amplifier, and flash memory in portable audio players. IC Role / Device Role / Timing Role: Low-noise 2.0V supply with rapid transient response to handle burst current demands of audio playback. Use Value: Peak-current-mode control limits output voltage droop to <40mV during 100mA load steps; SW node layout guidance minimizes EMI coupling into analog stages. |
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 | 3.0V fixed output; 2.05–6.0V input; 3.6MHz switching; 18µA IQ in PFM mode | Not suitable for 2.0V rail requirement; requires external feedback resistors for adjustment | Select only if system requires 3.0V output and TI's ecosystem integration is prioritized. |
| RT8059GJ6 | 2.0V fixed output; 2.5–5.5V input; 3MHz switching; 25µA IQ in skip mode; no ultrasonic mode | Lacks ultrasonic skip mode - may generate audible noise in quiet environments | Valid alternative where acoustic performance is non-critical and lower input voltage ceiling (5.5V) is acceptable. |
Compared with TPS62231DRYR and RT8059GJ6, ISL9104AIRUDZ-T7A uniquely combines 2.0V fixed output, ultrasonic skip mode, and 6.0V max input - making it optimal for noise-sensitive, battery-voltage-flexible portable designs requiring precise low-voltage rails.
Availability
ISL9104AIRUDZ-T7A is available at Aetrix Electronics and suitable for mobile handset power, portable instrumentation, Li-ion powered PDAs, and MP3 player audio subsystems requiring stable component supply and long-term lifecycle assurance.
Supply support for ISL9104AIRUDZ-T7A 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
Renesas Electronics (acquired Intersil in 2017) is a global leader in high-performance analog and mixed-signal semiconductors, specializing in power management and interface solutions for mobile, industrial, and automotive markets.
The ISL9104AIRUDZ-T7A belongs to Renesas' ultra-compact synchronous buck converter family designed specifically for battery-powered handheld devices demanding minimal PCB area, low IQ, and ultrasonic noise suppression.
FAQ
What is the output voltage of ISL9104AIRUDZ-T7A and is it adjustable?
The ISL9104AIRUDZ-T7A provides a factory-trimmed fixed 2.0V output with ±3% accuracy over temperature and line. It is not adjustable - the FB pin is internally connected to the output, eliminating the need for external resistor dividers. This simplifies layout and improves stability versus adjustable variants like ISL9104AIRUAZ-T.
Does ISL9104AIRUDZ-T7A support ultrasonic operation in skip mode?
Yes, ISL9104AIRUDZ-T7A is an ISL9104A-series device and includes ultrasonic skip mode, which shifts pulse-frequency modulation above 20kHz to prevent audible coil whine. This feature is explicitly enabled in all ISL9104A part numbers (marked with 'A' in the second position), distinguishing them from base ISL9104 variants.
What is the maximum continuous output current capability of ISL9104AIRUDZ-T7A?
The ISL9104AIRUDZ-T7A guarantees 500mA continuous output current across the full operating temperature range (–40°C to +85°C). This rating is validated with thermal derating applied per the 160°C/W θJA of the 1.6×1.6mm µTDFN package and assumes proper PCB copper pour and airflow.
How does the enable (EN) pin function on ISL9104AIRUDZ-T7A?
The EN pin on ISL9104AIRUDZ-T7A is active-high: driving it ≥1.4V enables regulation with internal soft-start; pulling it ≤0.4V disables the IC and activates the internal bleeding FET to discharge the output capacitor within 1ms. Leaving EN floating is prohibited - it must be actively driven or pulled to GND via a resistor.
What protection features are integrated into ISL9104AIRUDZ-T7A?
ISL9104AIRUDZ-T7A integrates overcurrent protection (OCP) via peak-current limiting, short-circuit protection (SCP) that reduces switching frequency under fault, thermal shutdown at 130°C with 30°C hysteresis, undervoltage lockout (UVLO) at 2.5V, and internal soft-start. All protections are fully autonomous and require no external components.
ISL9104AIRUDZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 6-UFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 4.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UTDFN (1.6x1.6)
ISL9104AIRUDZ-T7A FAQ
1.How can I place an order for ISL9104AIRUDZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9104AIRUDZ-T7A 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 ISL9104AIRUDZ-T7A reliable?
The price and inventory of ISL9104AIRUDZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9104AIRUDZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL9104AIRUDZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9104AIRUDZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9104AIRUDZ-T7A?
ISL9104AIRUDZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9104AIRUDZ-T7A 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 ISL9104AIRUDZ-T7A?
For technical support, including ISL9104AIRUDZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9104AIRUDZ-T7A requirements.
6.How does Aetrix verify that ISL9104AIRUDZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9104AIRUDZ-T7A 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 ISL9104AIRUDZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL9104AIRUDZ-T7A?
All ISL9104AIRUDZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9104AIRUDZ-T7A, 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 ISL9104AIRUDZ-T7A part is unused and in its original packaging.
Return procedure for ISL9104AIRUDZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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