My Inquiry
My Account
Renesas ISL9104IRUWZ-T7A
- Part No.:
- ISL9104IRUWZ-T7A
- Manufacturer:
- Renesas
- Package:
- 6-UFDFN
- Datasheet:
-
ISL9104IRUWZ-T7A.pdf
- Description:
- IC REG BUCK 1.2V 500MA 6UTDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL9104IRUWZ-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 fixed 1.2V output from 2.7–6.0V input, features 20µA quiescent current in skip mode, 100% duty-cycle operation for <300mV dropout at 500mA, and integrates P/N-channel MOSFETs in a 1.6×1.6mm µTDFN package - enabling compact Li+-powered designs like WCDMA handsets and MP3 players.
For engineers reviewing the ISL9104IRUWZ-T7A datasheet, ISL9104IRUWZ-T7A pinout, ISL9104IRUWZ-T7A application, or ISL9104IRUWZ-T7A equivalent, key selection criteria include its 1.2V fixed output, ultralow IQ skip mode, 4.3MHz PWM frequency enabling sub-1mm² layout, thermal shutdown at 130°C, and integrated soft-start with output capacitor discharge on disable.
Technical Context
The ISL9104IRUWZ-T7A employs peak-current-mode PWM control with internal slope compensation for fast transient response and pulse-by-pulse current limiting. Its architecture integrates a 0.8V bandgap reference, transconductance error amplifier, and zero-cross sensing circuit to enable automatic transition between fixed-frequency PWM (heavy load) and pulse-skipping PFM (light load).
It implements 100% duty-cycle low-dropout operation using an internal P-channel high-side switch, supports logic-level enable with <1µA shutdown current, and includes dedicated bleeding FET for rapid output capacitor discharge upon disable - all within a thermally enhanced 6-pin µTDFN package with θJA = 160°C/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±3% over line/load/temperature - eliminates external feedback resistors and ensures stable core voltage for low-power MCUs. |
| Max Output Current | 500mA guaranteed minimum - sufficient to power ARM Cortex-M series microcontrollers and baseband ICs in handheld devices. |
| Input Voltage Range | 2.7V to 6.0V - supports single Li+ cell (2.7–4.2V), three NiMH cells, or regulated 5V rail without external pre-regulation. |
| Switching Frequency | 4.3MHz typical (3.6–4.9MHz range) - enables use of 1.0µH inductors and 4.7µF ceramic capacitors for <0.5cm² total solution size. |
| Quiescent Current | 20µA typical in skip mode - maximizes battery runtime in standby/sleep states of portable electronics. |
| Duty Cycle | 100% maximum - achieves <300mV dropout at 500mA, extending usable battery life down to ~1.5V input for 1.2V output. |
| Protection Features | Thermal shutdown (130°C), overcurrent protection, short-circuit protection, UVLO (2.5V threshold), and internal soft-start - reduces need for external fault management circuitry. |
Pinout & Package
ISL9104IRUWZ-T7A is housed in a Pb-free, RoHS-compliant 6-lead 1.6mm × 1.6mm µTDFN package (PKG DWG # L6.1.6x1.6) with exposed thermal pad. The package supports reflow soldering per IPC/JEDEC J-STD-020 and has MSL3 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2.7–6.0V supply; requires local 4.7µF ceramic decoupling to GND for EMI suppression and transient response. |
| EN (Pin 2) | Enable control | Active-high logic input; pulls internal discharge FET when low to rapidly bleed output capacitor - critical for power sequencing. |
| NC (Pin 3) | No connect | Internally unconnected; must be left floating - no external tie required or recommended. |
| FB (Pin 4) | Feedback reference | Internally tied to 1.2V output for fixed-version operation; not user-accessible - eliminates resistor divider design effort. |
| GND (Pin 5) | Ground reference | Power and signal ground return; must be connected to low-impedance PCB ground plane adjacent to VIN and SW pins. |
| SW (Pin 6) | Switch node | Connects to inductor high-side terminal; carries high di/dt switching current - requires short, wide trace to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated P/N-channel MOSFETs | 0.45Ω/0.40Ω typical RDS(on) at 3.6V - eliminates external power switches and reduces BOM count while maintaining >93% peak efficiency. |
| Digital soft-start | 1.0ms controlled ramp - prevents inrush current during power-up, avoiding input rail collapse and system reset events. |
| Output capacitor discharge | Internal bleeding FET activated on EN low - discharges VOUT to <100mV within 1ms, meeting fast-power-down requirements in mobile SoC systems. |
| Ultrasonic skip mode | Not implemented in ISL9104 (only ISL9104A) - ISL9104IRUWZ-T7A operates in audible-frequency PFM, confirmed by datasheet differentiation. |
| Thermal protection | 130°C shutdown with 30°C hysteresis - autonomously disables regulator under overload or poor heatsinking and recovers at 100°C without external intervention. |
Applications
| Mobile Baseband Power | Wearable MCU Core Supply |
|---|---|
Use Scenario: Powering 3G/4G baseband processors in WCDMA handsets requiring tight voltage regulation and dynamic load response. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 1.2V core voltage with fast transient recovery (<10µs) during burst-mode RF transmission. Use Value: 4.3MHz switching and integrated MOSFETs reduce output ripple to <15mVpp under 500mA load steps, ensuring clean digital logic operation. | Use Scenario: Supplying ARM Cortex-M0/M3 cores in compact wearables where board area and battery life are critical constraints. IC Role / Device Role / Timing Role: Fixed-output buck converter providing always-on 1.2V domain with 20µA skip-mode IQ to extend coin-cell or small LiPo runtime beyond 72 hours. Use Value: 100% duty-cycle operation sustains regulation down to 1.5V input, enabling full utilization of battery discharge curve before system shutdown. |
| Portable Audio Codec Bias | Low-Power Sensor Hub Supply |
Use Scenario: Generating clean 1.2V bias for stereo audio codecs in MP3 players and Bluetooth headsets. IC Role / Device Role / Timing Role: Low-noise power source with integrated soft-start and output discharge - prevents pop/click artifacts during playback start/stop. Use Value: Internal bleeding FET discharges output capacitor in <1ms on disable, eliminating residual voltage that causes DAC latch-up or audio distortion. | Use Scenario: Powering inertial measurement units (IMUs) and environmental sensors in IoT edge nodes operating intermittently on harvested energy. IC Role / Device Role / Timing Role: Highly efficient, low-IQ regulator enabling >10,000 sleep cycles per battery charge via 20µA quiescent draw and fast wake-up from shutdown. Use Value: <1µA shutdown current and logic-controlled EN allow firmware to gate power to sensor subsystems without external load switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS62231DRYR | Fixed 1.2V output, 4MHz switching, 300mA max output, 17µA IQ in PFM - lower current rating and slightly lower IQ than ISL9104IRUWZ-T7A. | Targeted at ultra-low-power microcontrollers but lacks 500mA capability for baseband or multi-core SoCs. | Select when 300mA suffices and TI supply chain preference exists; verify thermal performance at 500mA if derated. |
| Analog Devices ADP2119ACPZ-R7 | Adjustable 0.8–3.3V output, 3MHz switching, 600mA max, 35µA IQ - higher current, wider VOUT range, but requires external feedback resistors and lacks integrated discharge FET. | Suitable for systems needing programmable voltage rails or higher current, but increases layout complexity and BOM count. | Choose when adjustable output or >500mA is required; accept added design overhead for flexibility. |
Compared with TPS62231DRYR and ADP2119ACPZ-R7, the ISL9104IRUWZ-T7A provides optimal balance of 500mA capability, 1.2V fixed output simplicity, 20µA light-load IQ, and integrated output discharge - making it uniquely suited for cost-sensitive, space-constrained mobile baseband and wearable MCU applications.
Availability
ISL9104IRUWZ-T7A is available at Aetrix Electronics and suitable for mobile handset power management, wearable MCU core supplies, portable audio codec biasing, and low-power sensor hub designs requiring stable component supply and long-term lifecycle support.
Supply support for ISL9104IRUWZ-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 Corporation (acquired Intersil in 2017) is a global leader in microcontrollers, analog, and power management semiconductors, serving automotive, industrial, and consumer markets with high-reliability, energy-efficient solutions.
The ISL9104IRUWZ-T7A belongs to Renesas' legacy Intersil high-efficiency DC-DC converter product line, specifically engineered for ultra-compact, battery-powered portable electronics demanding minimal footprint, low quiescent current, and robust protection features.
FAQ
What is the output voltage of the ISL9104IRUWZ-T7A and is it adjustable?
The ISL9104IRUWZ-T7A provides a fixed 1.2V output voltage with ±3% accuracy over line, load, and temperature. It is not adjustable - the FB pin is internally connected to the output, eliminating external feedback resistors. This simplifies design and improves reliability for dedicated 1.2V core rail applications.
Does the ISL9104IRUWZ-T7A support ultrasonic skip mode to eliminate audible noise?
No, the ISL9104IRUWZ-T7A does not support ultrasonic skip mode. That feature is exclusive to the ISL9104A variant (e.g., ISL9104AIRUWZ-T). The ISL9104IRUWZ-T7A operates in standard PFM mode, which may produce audible coil whine under light loads - confirmed by datasheet Table "Ordering Information" and Feature list differentiation.
What is the maximum continuous output current capability of the ISL9104IRUWZ-T7A?
The ISL9104IRUWZ-T7A guarantees a minimum continuous output current of 500mA across the full operating temperature range (-40°C to +85°C) and input voltage range (2.7V to 6.0V), as specified in the Absolute Maximum Ratings and Electrical Specifications sections of the FN6829 datasheet.
How does the ISL9104IRUWZ-T7A handle power-down sequencing and output discharge?
When the EN pin is driven low, the ISL9104IRUWZ-T7A immediately disables both internal MOSFETs and activates an internal bleeding FET connected to the output. This discharges the output capacitor to <100mV within 1ms, satisfying strict power-down timing requirements in mobile SoC systems and preventing residual voltage from interfering with subsequent power-up sequences.
What package type and thermal characteristics does the ISL9104IRUWZ-T7A use?
The ISL9104IRUWZ-T7A uses a 6-lead 1.6mm × 1.6mm µTDFN package (L6.1.6x1.6) with exposed thermal pad. Its typical junction-to-ambient thermal resistance (θJA) is 160°C/W under standard test conditions, and it incorporates thermal shutdown at 130°C with 30°C hysteresis to protect against sustained overload or inadequate PCB copper area.
ISL9104IRUWZ-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):
- 1.2V
- 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)
ISL9104IRUWZ-T7A FAQ
1.How can I place an order for ISL9104IRUWZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9104IRUWZ-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 ISL9104IRUWZ-T7A reliable?
The price and inventory of ISL9104IRUWZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9104IRUWZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL9104IRUWZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9104IRUWZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9104IRUWZ-T7A?
ISL9104IRUWZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9104IRUWZ-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 ISL9104IRUWZ-T7A?
For technical support, including ISL9104IRUWZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9104IRUWZ-T7A requirements.
6.How does Aetrix verify that ISL9104IRUWZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9104IRUWZ-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 ISL9104IRUWZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL9104IRUWZ-T7A?
All ISL9104IRUWZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9104IRUWZ-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 ISL9104IRUWZ-T7A part is unused and in its original packaging.
Return procedure for ISL9104IRUWZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL9104IRUWZ-T7A Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
