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Renesas ISL9307IRTAANGZ-T7A
- Part No.:
- ISL9307IRTAANGZ-T7A
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
ISL9307IRTAANGZ-T7A.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:200
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Product details
Overview
ISL9307IRTAANGZ-T7A from Renesas Electronics (formerly Intersil) is a dual-buck + dual-LDO mini-PMIC for Li-ion/Li-polymer battery-powered microprocessor systems. It integrates two 1500mA, 3MHz synchronous step-down converters (DCD1/DCD2) and two 300mA low-input LDOs (LDO1/LDO2), with factory-fixed 3.3V and 2.7V outputs, operating across -40°C to +85°C in a 4mm×4mm TQFN-16 package.
For engineers reviewing the ISL9307IRTAANGZ-T7A datasheet, ISL9307IRTAANGZ-T7A pinout, ISL9307IRTAANGZ-T7A application, or ISL9307IRTAANGZ-T7A equivalent, key selection considerations include its dual-buck + dual-LDO integration, fixed 3.3V/2.7V LDO outputs, 3MHz switching frequency enabling compact 1.5µH inductors, skip-mode efficiency optimization, and independent enable control per channel for precise power sequencing.
Technical Context
The ISL9307IRTAANGZ-T7A implements peak-current-mode PWM control for both buck converters, delivering fast transient response and cycle-by-cycle current limiting up to 1500mA per channel. Its 3MHz switching frequency supports ultra-small external passive components while maintaining stable regulation under dynamic load conditions.
Each LDO operates from 1.5V–5.5V input and delivers 300mA with dropout as low as 80mV at 300mA for VOUT > 2.8V. The device features independent EN pins for all four regulators, enabling flexible startup delay and sequencing-critical for multi-rail SoC power-up in smartphones and portable instruments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (DCD1/DCD2) | 2.5V to 5.5V - supports single-cell Li-ion (3.0–4.2V typical) with 0.5V headroom for voltage drop. |
| Switching Frequency | 2.6–3.4MHz (typ 3MHz) - enables use of 1.5µH inductors and reduces output ripple without increasing EMI filtering burden. |
| LDO Output Voltages | Fixed 3.3V (LDO1) and 2.7V (LDO2) - factory-set, eliminating external feedback resistors and simplifying layout. |
| 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 integrity during sustained high-power operation in compact handheld enclosures. |
| Package | 4mm × 4mm TQFN-16 with exposed thermal pad - provides low θJA (40.2°C/W) for efficient heat dissipation in space-constrained PCBs. |
Pinout & Package
ISL9307IRTAANGZ-T7A uses a 16-lead, 4mm × 4mm thin quad flat no-lead (TQFN) package with an exposed thermal pad soldered to PCB ground for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINDCD1 | Buck converter DCD1 input supply | Primary power rail for DCD1 and internal digital/analog circuitry; must be decoupled with ≥10µF ceramic capacitor. |
| FB1 | DCD1 feedback node | Connected directly to DCD1 output (fixed-output version); not used for external resistor divider in ISL9307IRTAANGZ-T7A. |
| ENDCD1 | DCD1 enable control | Active-high logic input; tie to VIN or controller GPIO to sequence DCD1 startup independently. |
| ENLDO1 | LDO1 enable control | Active-high logic input; enables 3.3V LDO output only when asserted-supports staggered rail activation. |
| VINLDO | LDO1/LDO2 common input | Accepts 1.5–5.5V; may be supplied from battery or DCD1/DCD2 output; requires local 1µF bypass capacitor. |
| VOLDO1 | LDO1 regulated output | Fixed 3.3V, 300mA output; designed for I/O, memory, or peripheral rails requiring low-noise, stable voltage. |
| VOLDO2 | LDO2 regulated output | Fixed 2.7V, 300mA output; optimized for analog sensors or RF bias where precise low-voltage stability is critical. |
| ENLDO2 | LDO2 enable control | Independent active-high enable for 2.7V rail-allows dynamic power gating of secondary analog subsystems. |
| GNDLDO | LDO power ground | Dedicated ground return for LDO1/LDO2; must be routed separately from buck grounds to minimize noise coupling. |
| ENDCD2 | DCD2 enable control | Active-high logic input; enables second buck channel for core voltage or GPU rail with programmable timing delay. |
| FB2 | DCD2 feedback node | Connected directly to DCD2 output (fixed-output version); eliminates external resistor network for simplified design. |
| VINDCD2 | Buck converter DCD2 input supply | May share VINDCD1 or use separate source; supports independent input for fault isolation in multi-battery systems. |
| SW2 | DCD2 switching node | High-frequency switching point connected to inductor; requires short, wide trace and tight loop with GND to minimize EMI. |
| GNDDCD2 | DCD2 power ground | Return path for DCD2 high-side/low-side MOSFETs; must connect to thermal pad via multiple vias for thermal integrity. |
| GNDDCD1 | DCD1 power ground | Return path for DCD1 power stage; isolated from GNDLDO to prevent LDO noise injection into buck switching paths. |
| SW1 | DCD1 switching node | High-frequency switching point connected to inductor; routing must avoid sensitive analog traces like FB1/FB2. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 1500mA synchronous buck converters | Delivers high-efficiency DC-DC conversion for processor cores and memory rails with integrated P/N-MOSFETs and 3MHz operation. |
| Dual 300mA low-input LDOs | Supports 1.5–5.5V input range and provides ultra-low-noise (45µVRMS) 3.3V/2.7V outputs for noise-sensitive analog circuits. |
| Independent per-channel enable pins | Four dedicated EN inputs (ENDCD1/ENDCD2/ENLDO1/ENLDO2) allow precise power-up/down sequencing without external logic. |
| Active output discharge (buck channels) | Internal 115Ω bleeding resistor discharges DCD1/DCD2 outputs rapidly upon disable-prevents floating voltages and improves system safety. |
| Thermal shutdown with hysteresis | 155°C trip threshold with 30°C hysteresis ensures reliable recovery after overtemperature events without oscillation. |
Applications
| Smartphone Application | Portable Instrument Power |
|---|---|
Use Scenario: Powering application processor, memory, and baseband ICs in a compact smartphone with single Li-ion battery. IC Role / Device Role / Timing Role: Mini-PMIC providing sequenced 3.3V I/O, 2.7V analog sensor bias, and dual 1.2V/1.8V core/memory rails via adjustable bucks. Use Value: Reduces BOM count by integrating four regulators in one 4mm×4mm package, minimizing PCB area and improving battery life through 3MHz skip-mode efficiency. | Use Scenario: Supplying precision analog front-end, microcontroller, and display driver in handheld test equipment. IC Role / Device Role / Timing Role: Dual-LDO section delivers clean 3.3V and 2.7V for ADC reference and op-amp bias; bucks power MCU core and LCD backlight drivers. Use Value: PSRR of 55dB at 1kHz and 45µVRMS output noise ensure measurement accuracy; independent EN pins enable sleep/wake rail control. |
| DSP Core Power System | Li-ion Battery-Powered Media Player |
Use Scenario: Delivering tightly regulated, low-noise power to high-performance DSP cores requiring rapid load transient response. IC Role / Device Role / Timing Role: DCD1 supplies DSP core voltage (e.g., 1.2V) with peak-current-mode control; LDO1 provides 3.3V for interface logic with minimal ripple. Use Value: 70ns minimum on-time and 1.5% output voltage accuracy maintain core stability during burst-mode processing; thermal shutdown protects during sustained compute loads. | Use Scenario: Managing power for audio codec, NAND flash, and OLED display in a portable media player running on 3.7V Li-polymer cell. IC Role / Device Role / Timing Role: DCD2 powers OLED display (2.8V), LDO2 supplies 2.7V to audio DAC, while DCD1 and LDO1 serve system MCU and memory. Use Value: 3MHz switching allows use of tiny 1.5µH inductors-reducing solution size-and skip mode extends playback time by >20% versus fixed-frequency operation. |
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 |
|---|---|---|---|
| TPS65023BRSBR | Triple 1.5A buck + triple LDO; 2.7–5.5V input; no fixed 3.3V/2.7V LDO option-requires external resistors for all LDO outputs. | Designed for OMAP-based handhelds; lacks factory-programmed LDO voltages-increases BOM and layout complexity for fixed-rail designs. | Select when needing three independent bucks or programmable LDOs; avoid if seeking drop-in replacement for ISL9307IRTAANGZ-T7A's fixed 3.3V/2.7V outputs. |
| RT8059GQW | Dual 2A buck + dual 300mA LDO; 2.5–5.5V input; LDO outputs adjustable only via external resistors (no factory-fixed variants). | Targeted at tablet SoCs; higher buck current rating but no pin-compatible mapping-requires full schematic and layout revision. | Choose for higher current capability (2A vs 1.5A) or different thermal profile; not suitable as direct alternative due to non-matching pinout and lack of fixed-LDO variants. |
Compared with TPS65023BRSBR and RT8059GQW, ISL9307IRTAANGZ-T7A offers factory-configured 3.3V/2.7V LDOs that eliminate external feedback networks, reduce component count by two resistors per LDO, and simplify validation-making it optimal for cost-sensitive, space-constrained portable designs where fixed rail voltages are sufficient.
Availability
ISL9307IRTAANGZ-T7A is available at Aetrix Electronics and suitable for smartphone power management, portable instrumentation, DSP core supply, and Li-ion battery-powered media players requiring stable component supply and long-term production continuity.
Supply support for ISL9307IRTAANGZ-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 is a global leader in high-performance analog and mixed-signal semiconductors, with deep expertise in power management for mobile, industrial, and automotive applications.
The ISL9307 product line was developed specifically for ultra-compact, battery-powered portable electronics-integrating dual high-frequency bucks and dual low-noise LDOs to replace discrete PMIC solutions while meeting stringent size, efficiency, and sequencing requirements.
FAQ
What output voltages are factory-configured on the ISL9307IRTAANGZ-T7A?
The ISL9307IRTAANGZ-T7A has factory-fixed LDO outputs: LDO1 delivers 3.3V and LDO2 delivers 2.7V. Both buck converters (DCD1/DCD2) are adjustable via external feedback resistors, though the datasheet confirms this specific variant uses fixed LDO voltages without requiring external dividers-simplifying design and reducing component count.
Does the ISL9307IRTAANGZ-T7A support power sequencing between its four regulators?
Yes, the ISL9307IRTAANGZ-T7A provides independent enable pins (ENDCD1, ENDCD2, ENLDO1, ENLDO2) for each regulator, allowing precise control over startup order and timing delays. This enables robust power sequencing required by modern SoCs-such as enabling LDO1 before DCD1 to power auxiliary logic prior to core voltage ramp-up-without external timing circuitry.
What is the maximum continuous output current per buck channel on the ISL9307IRTAANGZ-T7A?
The ISL9307IRTAANGZ-T7A supports up to 1500mA continuous output current per buck converter (DCD1 and DCD2). This rating is validated across the full operating temperature range (-40°C to +85°C) and accounts for thermal derating in the 4mm×4mm TQFN package with proper PCB thermal design including the exposed pad and multiple vias.
How does the ISL9307IRTAANGZ-T7A improve battery life in portable devices?
The ISL9307IRTAANGZ-T7A improves battery life through 3MHz pulse-skipping mode (PFM) operation under light loads, reducing quiescent current to 50µA (typ) with both bucks enabled. Combined with low dropout LDOs (80mV at 300mA) and high-efficiency synchronous rectification, it maximizes runtime in standby and intermittent-use scenarios typical of smartphones and media players.
Is the ISL9307IRTAANGZ-T7A RoHS-compliant and compatible with lead-free reflow processes?
Yes, the ISL9307IRTAANGZ-T7A is RoHS-compliant and features 100% matte tin (e3) termination finish, qualified for both SnPb and Pb-free soldering processes. Its MSL rating meets or exceeds IPC/JEDEC J-STD-020 requirements for lead-free peak reflow temperatures, ensuring reliable assembly in modern manufacturing lines.
ISL9307IRTAANGZ-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)
ISL9307IRTAANGZ-T7A FAQ
1.How can I place an order for ISL9307IRTAANGZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9307IRTAANGZ-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 ISL9307IRTAANGZ-T7A reliable?
The price and inventory of ISL9307IRTAANGZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9307IRTAANGZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL9307IRTAANGZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9307IRTAANGZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9307IRTAANGZ-T7A?
ISL9307IRTAANGZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9307IRTAANGZ-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 ISL9307IRTAANGZ-T7A?
For technical support, including ISL9307IRTAANGZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9307IRTAANGZ-T7A requirements.
6.How does Aetrix verify that ISL9307IRTAANGZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9307IRTAANGZ-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 ISL9307IRTAANGZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL9307IRTAANGZ-T7A?
All ISL9307IRTAANGZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9307IRTAANGZ-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 ISL9307IRTAANGZ-T7A part is unused and in its original packaging.
Return procedure for ISL9307IRTAANGZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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