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Renesas ISL9307IRTAANYZ-T7A
- Part No.:
- ISL9307IRTAANYZ-T7A
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
ISL9307IRTAANYZ-T7A.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:705
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Product details
Overview
ISL9307IRTAANYZ-T7A from Renesas (formerly Intersil) is a dual-buck + dual-LDO mini-PMIC for single-cell Li-ion/Li-polymer battery-powered microprocessor systems. It integrates two 3MHz, 1500mA synchronous step-down converters (DCD1/DCD2) and two 300mA low-input LDOs (LDO1/LDO2), with factory-fixed 3.3V and 0.9V outputs, operating across –40°C to +85°C in a 4mm×4mm TQFN-16 package.
For engineers reviewing the ISL9307IRTAANYZ-T7A datasheet, ISL9307IRTAANYZ-T7A pinout, ISL9307IRTAANYZ-T7A application, or ISL9307IRTAANYZ-T7A equivalent, this page delivers verified electrical specs, power sequencing behavior, thermal shutdown thresholds, skip-mode efficiency data, and validated alternative parts for portable power rail design.
Technical Context
The ISL9307IRTAANYZ-T7A implements peak-current-mode PWM control for both buck converters, enabling fast transient response and pulse-by-pulse current limiting up to 1500mA per channel. Its 3MHz switching frequency supports compact 1.5µH inductors and low-ESR ceramic capacitors.
Each buck converter features active output discharge (115Ω internal bleeding resistor), 100% duty-cycle low-dropout operation, and UVLO (2.2V typ. on VINDCD1, 1.4V typ. on VINLDO). The dual LDOs accept 1.5V–5.5V input and deliver fixed 3.3V/0.9V outputs with 125mV dropout at 300mA (VO ≤ 2.1V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (DCD1/DCD2) | 2.5V to 5.5V - supports direct connection to single Li-ion (3.0–4.2V) or boosted rails. |
| Switching Frequency | 2.6–3.4MHz (typ. 3MHz) - enables use of <3mm×3mm inductors and reduces EMI fundamental frequency. |
| Buck Output Current | 1500mA per channel - sufficient for DSP core or memory I/O rails in smartphones and PDAs. |
| LDO Output Voltage | Fixed 3.3V (LDO1) and 0.9V (LDO2) - factory-set, no external feedback resistors required. |
| Quiescent Current (Skip Mode) | 50µA typ. with both bucks enabled - extends battery runtime during light-load standby states. |
| Thermal Shutdown Threshold | 155°C with 30°C hysteresis - protects die under sustained overload or poor PCB thermal design. |
| Package | 16-lead 4mm×4mm TQFN with exposed thermal pad - requires 9-via thermal land for 40.2°C/W θJA performance. |
Pinout & Package
ISL9307IRTAANYZ-T7A uses a 16-lead 4mm×4mm TQFN package (JEDEC MO220K, drawing L16.4X4G) with an exposed E-pad for thermal dissipation. Pin assignment is fully defined per datasheet FN7931 Rev 3.00, Page 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINDCD1 (Pin 1) | Main input for DCD1 and internal circuitry supply | Accepts 2.5–5.5V; powers digital/analog blocks and DCD1 switcher. |
| FB1 (Pin 2) | Feedback node for DCD1 | Internally connected to 0.8V reference; for adjustable versions only - not used in ISL9307IRTAANYZ-T7A (fixed-output). |
| ENDCD1 (Pin 3) | Enable control for DCD1 | Active-high logic (1.4V min high, 0.4V max low); enables precise power sequencing. |
| ENLDO1 (Pin 4) | Enable control for LDO1 | Active-high; allows independent startup timing vs. bucks and LDO2. |
| VINLDO (Pin 5) | Shared input for LDO1/LDO2 | 1.5–5.5V range; may be supplied from battery or DCD1/DCD2 output. |
| VOLDO1 (Pin 6) | Fixed 3.3V LDO1 output | No external components needed; delivers up to 300mA with 125mV dropout at full load. |
| VOLDO2 (Pin 7) | Fixed 0.9V LDO2 output | Factory-trimmed; suitable for low-voltage logic or analog bias rails. |
| ENLDO2 (Pin 8) | Enable control for LDO2 | Independent enable allows staggered power-up of multiple low-voltage domains. |
| GNDLDO (Pin 9) | Power ground for LDOs | Separate from buck grounds to minimize noise coupling into sensitive analog outputs. |
| ENDCD2 (Pin 10) | Enable control for DCD2 | Enables independent sequencing of second buck channel (e.g., for I/O or memory rail). |
| FB2 (Pin 11) | Feedback node for DCD2 | Not used in fixed-output variant; internally tied to output per datasheet note. |
| VINDCD2 (Pin 12) | Main input for DCD2 | 2.3V to VINDCD1 range; supports asymmetric input configurations. |
| SW2 (Pin 13) | DCD2 switching node | Connects to inductor; high di/dt node requiring short, wide trace routing. |
| GNDDCD2 (Pin 14) | Power ground for DCD2 | Must be routed separately from GNDLDO and GNDDCD1 to avoid ground bounce. |
| GNDDCD1 (Pin 15) | Power ground for DCD1 | Forms dedicated return path for first buck's high-side/low-side FET currents. |
| SW1 (Pin 16) | DCD1 switching node | High-frequency, high-noise node; keep away from FB, EN, and analog traces. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 3MHz synchronous buck converters | Enables ultra-compact DC/DC stage using 1.5µH inductors and 10µF ceramic output caps - reduces board area by >40% vs. 500kHz solutions. |
| Per-channel enable pins (ENDCD1/ENDCD2/ENLDO1/ENLDO2) | Supports programmable power sequencing without external timers - critical for multi-rail SoC boot integrity. |
| Active output discharge (115Ω bleed resistor) | Forces rapid voltage decay on DCD1/DCD2 outputs when disabled - prevents unintended wake-up or latch-up in downstream logic. |
| 300mA low-input LDOs with 0.9V/3.3V fixed outputs | Eliminates external feedback networks and improves long-term output stability over temperature and aging. |
| Skip mode operation at light load | Reduces quiescent current to 50µA typ. with both bucks active - extends standby time in always-on mobile applications. |
Applications
| Smartphone Core Power | Portable Media Player I/O Rail |
|---|---|
|
Use Scenario: Powering application processor cores requiring tightly regulated 0.9V and 3.3V rails from a single Li-ion cell. IC Role / Device Role / Timing Role: Dual-buck supplies CPU core voltage (0.9V via LDO2 or DCD2) and interface voltage (3.3V via LDO1), while bucks handle high-current dynamic loads. Use Value: Factory-fixed 0.9V/3.3V eliminates BOM cost and layout complexity of external resistive dividers; 3MHz switching minimizes inductor size for thin form factors. |
Use Scenario: Delivering stable 3.3V for SD card, USB PHY, and display interface in handheld media players. IC Role / Device Role / Timing Role: LDO1 provides low-noise 3.3V; DCD1 supplies 1.8V or 1.2V to NAND flash controller; sequencing controlled via EN pins. Use Value: PSRR >55dB at 1kHz ensures clean I/O signaling; 1500mA buck capacity handles burst write currents without droop. |
| DSP-Based Portable Instrument | Li-ion-Powered PDA System |
|
Use Scenario: Powering mixed-signal DSP subsystems with analog front-end (AFE) and digital processing cores. IC Role / Device Role / Timing Role: LDO2 (0.9V) powers DSP core; LDO1 (3.3V) powers AFE; bucks supply intermediate rails like 1.8V for ADC/DAC interfaces. Use Value: Separate GNDLDO and GNDDCDx grounds prevent switching noise from corrupting analog measurements; <45µVRMS output noise meets precision AFE requirements. |
Use Scenario: Consolidating power for PDA main processor, touchscreen controller, and backlight driver from one battery. IC Role / Device Role / Timing Role: DCD1 powers 1.2V processor core; DCD2 powers 1.8V memory; LDO1 (3.3V) drives touchscreen IC; LDO2 (0.9V) unused or reserved. Use Value: 4mm×4mm footprint saves >25mm² vs. discrete PMIC solutions; thermal shutdown (155°C) safeguards against enclosure overheating in sealed devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck + dual-LDO power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBT | Triple 1.5A bucks + dual 300mA LDOs; 2.5–6V input; fixed 1.2V/1.5V/1.8V bucks; 2.8V/3.3V LDOs; 2.25MHz switching. | Higher integration (3 bucks), but lacks 0.9V LDO; requires external sequencing logic for 4-rail coordination. | Select when needing third buck rail or higher input voltage margin (>5.5V); verify thermal derating for 4mm×4mm layout. |
| RT8059ZSP | Dual 1.5A bucks + dual 300mA LDOs; 2.5–5.5V input; adjustable bucks; fixed 3.3V/1.2V LDOs; 3MHz switching; 16-pin QFN. | Offers 1.2V LDO instead of 0.9V; no factory-fixed 0.9V option; identical pinout not confirmed. | Choose for 1.2V logic rail compatibility; confirm pin mapping before PCB reuse; validate skip-mode IQ (<60µA) matches system standby budget. |
Compared with ISL9307IRTAANYZ-T7A, TPS65023BRSBT adds a third buck but omits the 0.9V LDO critical for modern low-Vdd processors, while RT8059ZSP provides matching 3MHz operation and buck capability but substitutes 1.2V for 0.9V - making ISL9307IRTAANYZ-T7A uniquely suited for sub-1V core power with zero external components.
Availability
ISL9307IRTAANYZ-T7A is available at Aetrix Electronics and suitable for smartphone core power, portable media player I/O rail, DSP-based portable instrument, and Li-ion-powered PDA system applications requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for ISL9307IRTAANYZ-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) designs high-performance analog and power management ICs for mobile, computing, and industrial markets, with ISO9001-certified manufacturing.
The ISL9307 product line targets compact, battery-efficient power delivery for handheld consumer electronics - integrating dual high-frequency bucks and dual low-noise LDOs to replace discrete solutions in space-constrained designs.
FAQ
What are the fixed output voltages of ISL9307IRTAANYZ-T7A?
The ISL9307IRTAANYZ-T7A has factory-programmed fixed outputs: LDO1 delivers 3.3V and LDO2 delivers 0.9V. These values are laser-trimmed during production and require no external feedback resistors. DCD1 and DCD2 are adjustable via FB pins, but ISL9307IRTAANYZ-T7A uses internal connections per datasheet FN7931 Rev 3.00, Page 4 ordering table.
Does ISL9307IRTAANYZ-T7A support power sequencing?
Yes, ISL9307IRTAANYZ-T7A supports precise power sequencing via four independent enable pins: ENDCD1, ENDCD2, ENLDO1, and ENLDO2. Each is active-high with 1.4V minimum logic high threshold, allowing staggered startup of rails - for example, enabling LDO2 (0.9V) before DCD1 to meet processor core power-up timing requirements.
What is the thermal performance of ISL9307IRTAANYZ-T7A in its TQFN package?
ISL9307IRTAANYZ-T7A in the 4mm×4mm TQFN package has a typical junction-to-ambient thermal resistance (θJA) of 40.2°C/W when mounted on a high-thermal-conductivity test board with nine vias under the exposed E-pad. Its thermal shutdown activates at 155°C with 30°C hysteresis, resuming operation at ~130°C after cooldown.
Can ISL9307IRTAANYZ-T7A operate with a 2.5V input on DCD1?
Yes, ISL9307IRTAANYZ-T7A supports VINDCD1 down to 2.5V per absolute maximum and recommended operating conditions (FN7931 Rev 3.00, Pages 5–6). At 2.5V input, the 0.9V LDO2 remains functional (VINLDO ≥ 1.5V), and DCD1 enters 100% duty-cycle dropout mode to sustain output - provided the P-channel MOSFET RDS(ON) and load current yield acceptable dropout voltage.
Is the ISL9307IRTAANYZ-T7A RoHS compliant and lead-free?
Yes, ISL9307IRTAANYZ-T7A is RoHS compliant and features 100% matte tin (e3) termination finish, compatible with both SnPb and Pb-free soldering processes. It meets IPC/JEDEC J-STD-020 moisture sensitivity level requirements and is classified per Tech Brief TB363.
ISL9307IRTAANYZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (2), Linear (LDO) (2)
- Number of Outputs:
- 4
- Frequency - Switching:
- 3MHz
- Voltage/Current - Output 1:
- 0.8V ~ 5.5V, 1.5A
- Voltage/Current - Output 2:
- 0.8V ~ 5.5V, 1.5A
- Voltage/Current - Output 3:
- 3.3V, 300mA
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 1.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (4x4)
ISL9307IRTAANYZ-T7A FAQ
1.How can I place an order for ISL9307IRTAANYZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9307IRTAANYZ-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 ISL9307IRTAANYZ-T7A reliable?
The price and inventory of ISL9307IRTAANYZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9307IRTAANYZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL9307IRTAANYZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9307IRTAANYZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9307IRTAANYZ-T7A?
ISL9307IRTAANYZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9307IRTAANYZ-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 ISL9307IRTAANYZ-T7A?
For technical support, including ISL9307IRTAANYZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9307IRTAANYZ-T7A requirements.
6.How does Aetrix verify that ISL9307IRTAANYZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9307IRTAANYZ-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 ISL9307IRTAANYZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL9307IRTAANYZ-T7A?
All ISL9307IRTAANYZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9307IRTAANYZ-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 ISL9307IRTAANYZ-T7A part is unused and in its original packaging.
Return procedure for ISL9307IRTAANYZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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