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Renesas ISL9307IRTAAJGZ-T7A
- Part No.:
- ISL9307IRTAAJGZ-T7A
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
ISL9307IRTAAJGZ-T7A.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,593
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Product details
Overview
ISL9307IRTAAJGZ-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 1500mA, 3MHz synchronous step-down converters (DCD1/DCD2) and two 300mA low-input LDOs (LDO1/LDO2), with factory-fixed LDO outputs of 2.8V and 2.7V respectively, operating across -40°C to +85°C.
For engineers reviewing the ISL9307IRTAAJGZ-T7A datasheet, ISL9307IRTAAJGZ-T7A pinout, ISL9307IRTAAJGZ-T7A application, or ISL9307IRTAAJGZ-T7A equivalent, key selection criteria include its 3MHz switching frequency enabling ultra-small external passives, skip-mode operation for light-load efficiency, independent enable pins per channel for precise power sequencing, and 4mm×4mm TQFN-16 package with exposed thermal pad.
Technical Context
The ISL9307IRTAAJGZ-T7A implements peak-current-mode PWM control for both buck converters, delivering fast transient response and pulse-by-pulse current limiting up to 1500mA per channel. Its 3MHz fixed-frequency operation supports compact 1.5µH inductors and low-ESR ceramic capacitors.
Each LDO accepts input from 1.5V to 5.5V - including direct battery or buck output - and delivers factory-set 2.8V (LDO1) and 2.7V (LDO2) with ≤3% output voltage accuracy, 55dB PSRR at 1kHz, and dropout as low as 80mV at 300mA for high-efficiency low-voltage regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (DCD1/DCD2) | 2.5V to 5.5V - supports full Li-ion battery range (3.0–4.2V nominal) without external pre-regulation |
| Switching Frequency | 3.0MHz ±0.4MHz - enables use of 1.5µH inductors and sub-10µF ceramic output caps |
| DCD Output Current | 1500mA per channel - sufficient for DSP core or memory I/O rails in portable SoCs |
| LDO Output Voltages | 2.8V (LDO1), 2.7V (LDO2) - factory-fixed, no external feedback resistors required |
| LDO Dropout Voltage | 80mV @ 300mA, VO > 2.8V - maintains regulation down to VIN = 2.78V for LDO2 |
| Quiescent Current (Skip Mode) | 50µA typ. with both DCDs enabled - extends battery runtime during standby |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade portable equipment environments |
Pinout & Package
The ISL9307IRTAAJGZ-T7A is housed in a 4mm × 4mm, 16-lead Thin Quad Flat No-lead (TQFN) package with exposed thermal pad (JEDEC MO220K, pkg drawing L16.4X4G). The E-pad must be soldered to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINDCD1 | Buck converter DCD1 input & internal circuit supply | Primary power rail for DCD1 and all internal analog/digital blocks; 2.5–5.5V range |
| FB1 | DCD1 feedback node | Connects to resistor divider for adjustable versions; tied directly to VODCD1 for fixed-output variants like ISL9307IRTAAJGZ-T7A |
| ENDCD1 | DCD1 enable control | Active-high logic input; controls startup timing and sequencing independence |
| ENLDO1 | LDO1 enable control | Active-high logic input; allows staggered power-up of 2.8V rail relative to other channels |
| VINLDO | LDO1/LDO2 common input | Accepts 1.5–5.5V; may be supplied from battery or DCD output (e.g., DCD1's 2.8V) |
| VOLDO1 | LDO1 regulated output | Fixed 2.8V output, 300mA max, with ≤3% accuracy and 55dB PSRR at 1kHz |
| VOLDO2 | LDO2 regulated output | Fixed 2.7V output, 300mA max, optimized for low-noise analog or interface supplies |
| ENLDO2 | LDO2 enable control | Independent active-high enable for 2.7V rail; supports flexible power sequencing |
| GNDLDO | LDO power ground | Dedicated ground return for LDO1/LDO2; separate from buck grounds to minimize noise coupling |
| ENDCD2 | DCD2 enable control | Active-high logic input; enables independent sequencing of second buck channel |
| FB2 | DCD2 feedback node | Same function as FB1; tied to VODCD2 for fixed-output configuration |
| VINDCD2 | Buck converter DCD2 input | Second independent input rail; supports 2.3V to VINDCD1 range |
| SW2 | DCD2 switching node | Connects to inductor; carries high di/dt switching current - requires tight layout |
| GNDDCD2 | DCD2 power ground | Dedicated ground return for DCD2 power stage; isolated from other grounds for EMI control |
| GNDDCD1 | DCD1 power ground | Dedicated ground return for DCD1 power stage; routed separately from GNDLDO and SW nodes |
| SW1 | DCD1 switching node | Connects to inductor; critical high-noise node requiring short, wide trace and separation from sensitive signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual 3MHz synchronous buck converters | Enables <1.5µH inductors and <10µF ceramic output caps - reduces solution footprint by >40% vs 500kHz PMICs |
| Skip-mode operation | Reduces quiescent current to 50µA typ. under light load - extends battery life in standby/sleep states |
| Independent EN pins per regulator | Supports programmable power-up/down sequencing across four rails - essential for multi-core SoC compliance |
| Factory-fixed LDO outputs | Eliminates external feedback resistors for LDO1 (2.8V) and LDO2 (2.7V) - simplifies BOM and layout |
| Thermally enhanced TQFN-16 | θJA = 40.2°C/W with proper E-pad grounding - sustains 1500mA buck operation at +85°C ambient |
Applications
| Mobile Application Processor Core | Low-Noise RF Front-End Bias |
|---|---|
Use Scenario: Powering ARM Cortex-A series CPU cores in smartphones and tablets using single Li-ion battery input. IC Role / Device Role / Timing Role: ISL9307IRTAAJGZ-T7A delivers tightly regulated 1.2V/1.8V core voltage via DCD1/DCD2 and supplies clean 2.8V/2.7V I/O or memory interface rails via LDO1/LDO2. Use Value: 3MHz switching minimizes output ripple and EMI near sensitive RF sections; skip mode extends standby time beyond 72 hours. | Use Scenario: Providing stable, low-noise bias for LTE/Wi-Fi transceiver ICs in compact handheld devices. IC Role / Device Role / Timing Role: ISL9307IRTAAJGZ-T7A uses LDO1 (2.8V) and LDO2 (2.7V) to power PA drivers and LNA stages, while DCDs supply digital baseband. Use Value: 45µVRMS output noise and 55dB PSRR at 1kHz ensure minimal phase noise degradation in RF signal chains. |
| Portable Medical Sensor Hub | Industrial Handheld Terminal |
Use Scenario: Powering multi-sensor data acquisition modules (ECG, SpO₂, temperature) in battery-operated clinical devices. IC Role / Device Role / Timing Role: ISL9307IRTAAJGZ-T7A generates 3.3V (via DCD1), 1.8V (via DCD2), 2.8V (LDO1), and 2.7V (LDO2) from a 3.7V Li-ion cell. Use Value: Independent EN pins allow controlled ramp-up of analog sensor supplies before digital logic - prevents startup glitches and false readings. | Use Scenario: Supplying mixed-voltage rails for barcode scanner engines, display controllers, and secure MCU in rugged field terminals. IC Role / Device Role / Timing Role: ISL9307IRTAAJGZ-T7A powers 1.2V FPGA fabric (DCD1), 3.3V interface (DCD2), 2.8V display backlight driver (LDO1), and 2.7V crypto module (LDO2). Use Value: -40°C to +85°C rating and thermal shutdown (155°C) ensure reliable operation in uncontrolled outdoor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-buck + dual-LDO PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBR | 3MHz buck switching; fixed 1.8V/2.8V LDOs; 2.5–6.0V input; 16-pin QFN but larger 4.5×4.5mm footprint | Includes I²C interface for dynamic voltage scaling; lacks independent EN pins for all four rails | Choose when system-level DVFS control is required and board area permits larger package |
| RT8070ZSP | 2.5MHz buck switching; adjustable LDO outputs; 2.7–5.5V input; 16-pin QFN (3×3mm) | No factory-fixed LDO voltages - requires external resistors; lower max buck current (1200mA) | Choose when LDO output flexibility outweighs fixed-voltage simplicity and 300mA margin is acceptable |
Compared with TPS65023BRSBR and RT8070ZSP, the ISL9307IRTAAJGZ-T7A offers tighter integration of fixed 2.8V/2.7V LDOs with zero external components, superior light-load efficiency via skip mode, and identical 4×4mm footprint - making it optimal for space-constrained, battery-sensitive portable designs where rail count and sequencing precision are critical.
Availability
ISL9307IRTAAJGZ-T7A is available at Aetrix Electronics and suitable for cellular phones, portable medical sensors, and industrial handheld terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL9307IRTAAJGZ-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, precision analog, and interface solutions for mobile, industrial, and automotive markets.
The ISL9307IRTAAJGZ-T7A belongs to Renesas' mini-PMIC product line, designed specifically for space- and efficiency-critical portable electronics powered by single-cell Li-ion batteries - emphasizing ultra-small footprint, multi-rail sequencing, and extended battery life.
FAQ
What are the factory-set output voltages for LDO1 and LDO2 on the ISL9307IRTAAJGZ-T7A?
The ISL9307IRTAAJGZ-T7A has factory-programmed LDO outputs: LDO1 delivers a fixed 2.8V and LDO2 delivers a fixed 2.7V. These values are confirmed in the Ordering Information table (Page 4 of FN7931 Rev 3.00) and require no external feedback resistors - simplifying design and reducing BOM count. Both LDOs support 300mA maximum output current with ≤3% accuracy across -40°C to +85°C.
Does the ISL9307IRTAAJGZ-T7A support power sequencing between its four output rails?
Yes, the ISL9307IRTAAJGZ-T7A provides independent enable pins for each regulator: ENDCD1, ENDCD2, ENLDO1, and ENLDO2. All are active-high logic inputs with defined threshold voltages (1.4V min high, 0.4V max low). This allows precise control over startup order and delay - for example, enabling LDO2 (2.7V) before DCD1 (core rail) to meet SoC power-on requirements. No external timing components are needed.
What is the minimum input voltage required for the ISL9307IRTAAJGZ-T7A to maintain regulation on DCD2?
The ISL9307IRTAAJGZ-T7A specifies VINDCD2 minimum as 2.3V (Page 5, Recommended Operating Conditions). This ensures stable operation even as the Li-ion battery discharges below 3.0V. Under dropout conditions, the P-channel MOSFET operates at 100% duty cycle; regulation is maintained as long as VIN ≥ VOUT + (ILOAD × RDS(ON)), where RDS(ON) is ≤0.20Ω for the high-side switch at 3.6V input.
Can the ISL9307IRTAAJGZ-T7A operate with only the LDOs enabled and both buck converters disabled?
Yes, the ISL9307IRTAAJGZ-T7A supports independent channel enable/disable. With DCD1 and DCD2 disabled (ENDCD1 = ENDCD2 = low), and LDO1/LDO2 enabled (ENLDO1 = ENLDO2 = high), the device draws only ~110µA typical quiescent current (IVIN4, Page 5). VINLDO must be within 1.5–5.5V and no higher than VINDCD1 - allowing direct battery connection or supply from an external source.
Is the exposed thermal pad on the ISL9307IRTAAJGZ-T7A electrically connected to ground?
Yes, the exposed E-pad on the ISL9307IRTAAJGZ-T7A is internally connected to GNDLDO (Pin 9) and serves as the primary thermal and electrical ground path for the LDO section. Per Package Outline Drawing (Page 13) and Board Layout Recommendations (Page 8), the E-pad must be soldered to a solid PCB ground plane using ≥9 thermal vias to achieve the specified θJA of 40.2°C/W and ensure safe operation at full load.
ISL9307IRTAAJGZ-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:
- 2.8V, 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)
ISL9307IRTAAJGZ-T7A FAQ
1.How can I place an order for ISL9307IRTAAJGZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9307IRTAAJGZ-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 ISL9307IRTAAJGZ-T7A reliable?
The price and inventory of ISL9307IRTAAJGZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9307IRTAAJGZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL9307IRTAAJGZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9307IRTAAJGZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9307IRTAAJGZ-T7A?
ISL9307IRTAAJGZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9307IRTAAJGZ-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 ISL9307IRTAAJGZ-T7A?
For technical support, including ISL9307IRTAAJGZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9307IRTAAJGZ-T7A requirements.
6.How does Aetrix verify that ISL9307IRTAAJGZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9307IRTAAJGZ-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 ISL9307IRTAAJGZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL9307IRTAAJGZ-T7A?
All ISL9307IRTAAJGZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9307IRTAAJGZ-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 ISL9307IRTAAJGZ-T7A part is unused and in its original packaging.
Return procedure for ISL9307IRTAAJGZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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