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Renesas ISL9307IRTWCNJZ-T7A
- Part No.:
- ISL9307IRTWCNJZ-T7A
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
ISL9307IRTWCNJZ-T7A.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,305
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Product details
Overview
ISL9307IRTWCNJZ-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) with fixed 1.2V and 1.8V outputs, and two low-input LDOs with factory-set 3.3V and 2.8V outputs - delivering precise rail sequencing for mobile SoC core and I/O power domains.
For engineers reviewing the ISL9307IRTWCNJZ-T7A datasheet, ISL9307IRTWCNJZ-T7A pinout, ISL9307IRTWCNJZ-T7A application, or ISL9307IRTWCNJZ-T7A equivalent, this device supports high-efficiency PFM/PWM operation, active output discharge, thermal shutdown, and independent enable control per channel - critical for battery life optimization and robust power-up sequencing in space-constrained portable designs.
Technical Context
The ISL9307IRTWCNJZ-T7A implements peak-current-mode PWM control for both buck converters, enabling fast transient response and pulse-by-pulse current limiting up to 2.75A peak. Its 3MHz switching frequency allows use of 1.5µH inductors and compact ceramic capacitors, minimizing board area while maintaining stable regulation under dynamic load steps from 150mA to 1500mA.
All four regulators feature independent enable pins (ENDCD1/ENDCD2/ENLDO1/ENLDO2), UVLO thresholds (2.2V for DCD inputs, 1.4V for LDO input), and integrated protection including overcurrent, short-circuit, and thermal shutdown (155°C trip, 30°C hysteresis). The LDOs operate from 1.5V–5.5V input and deliver 300mA with <250mV dropout at full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DCD1 Output Voltage | Fixed 1.2V - eliminates external feedback resistors and simplifies layout for core voltage rail. |
| DCD2 Output Voltage | Fixed 1.8V - provides stable I/O or memory interface supply without compensation components. |
| LDO1 Output Voltage | Fixed 3.3V - powers analog peripherals or interface circuitry directly from battery or buck output. |
| LDO2 Output Voltage | Fixed 2.8V - supplies RF front-end or sensor bias with low-noise (<45µVRMS) regulation. |
| Switching Frequency | 3.0MHz ±0.4MHz - enables ultra-small passive components (e.g., 1.5µH inductors) and reduces EMI fundamental frequency. |
| Quiescent Current | 50µA typical (both bucks enabled, no load) - extends battery runtime in standby and light-load states via skip mode. |
| Thermal Shutdown | 155°C with 30°C hysteresis - protects die during sustained overload or poor PCB thermal design. |
| Package | 4mm × 4mm, 16-lead TQFN with exposed thermal pad - supports high-power density and efficient heat dissipation in thin mobile form factors. |
Pinout & Package
ISL9307IRTWCNJZ-T7A uses a 4mm × 4mm, 16-lead Thin Quad Flat No-lead (TQFN) package with an exposed thermal pad (JEDEC MO220K, drawing L16.4X4G). The E-pad must be soldered to a solid ground plane with ≥9 thermal vias for reliable thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINDCD1 (Pin 1) | DCD1 input & internal circuit supply | Accepts 2.5V–5.5V; powers digital/analog blocks and DCD1 switch stage. |
| FB1 (Pin 2) | DCD1 feedback node | Internally connected to fixed 1.2V reference; not externally accessible in this variant. |
| ENDCD1 (Pin 3) | DCD1 enable control | Active-high logic (1.4V threshold); controls startup timing and power sequencing. |
| ENLDO1 (Pin 4) | LDO1 enable control | Active-high logic; allows independent activation of 3.3V LDO for peripheral power management. |
| VINLDO (Pin 5) | LDO1/LDO2 input supply | Accepts 1.5V–5.5V; may be sourced from battery or DCD1/DCD2 outputs. |
| VOLDO1 (Pin 6) | LDO1 regulated output | Fixed 3.3V, 300mA capable; low-noise output for analog/sensor circuits. |
| VOLDO2 (Pin 7) | LDO2 regulated output | Fixed 2.8V, 300mA capable; optimized for RF bias or low-dropout I/O rails. |
| ENLDO2 (Pin 8) | LDO2 enable control | Active-high logic; enables precise sequencing of second LDO relative to system state. |
| GNDLDO (Pin 9) | LDO power ground | Dedicated ground return for LDO1/LDO2; separates analog-sensitive paths from switching noise. |
| ENDCD2 (Pin 10) | DCD2 enable control | Active-high logic; decouples DCD2 startup from DCD1 for staggered rail ramp-up. |
| FB2 (Pin 11) | DCD2 feedback node | Internally connected to fixed 1.8V reference; no external resistor network required. |
| VINDCD2 (Pin 12) | DCD2 input supply | Accepts 2.3V–VINDCD1; supports independent input sourcing or shared battery rail. |
| SW2 (Pin 13) | DCD2 switching node | Connects to inductor; high dv/dt node requiring tight layout and separation from sensitive traces. |
| GNDDCD2 (Pin 14) | DCD2 power ground | Dedicated ground return for DCD2 power loop; minimizes coupling into LDO or analog sections. |
| GNDDCD1 (Pin 15) | DCD1 power ground | Dedicated ground return for DCD1 power loop; maintains clean reference for FB1 sensing. |
| SW1 (Pin 16) | DCD1 switching node | Connects to inductor; requires shortest possible trace to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual-buck + dual-LDO architecture | Reduces BOM count by consolidating four independent regulators into one 4×4mm IC - ideal for space-constrained mobile PCBs. |
| 3MHz PWM switching frequency | Enables use of 1.5µH inductors and 1µF/10µF ceramic capacitors, cutting solution size >40% vs. 1MHz alternatives. |
| Independent per-channel enable pins | Supports programmable power sequencing (e.g., core → I/O → peripherals) without external logic or timers. |
| Active output discharge (115Ω bleed resistor) | Forces rapid discharge of DCD1/DCD2 outputs when disabled - prevents floating voltages and ensures safe reset behavior. |
| Low-noise LDO regulation | Delivers <45µVRMS output noise and 55dB PSRR at 1kHz - suitable for noise-sensitive RF and audio subsystems. |
| Thermal and overcurrent protection | Includes 155°C thermal shutdown with 30°C hysteresis and 2.75A peak current limit per buck - ensures reliability under fault conditions. |
Applications
| Smartphone Application Processor Power | Wearable Sensor Hub Supply |
|---|---|
Use Scenario: Powers ARM Cortex-A series application processor in LTE smartphones with discrete core (1.2V), I/O (1.8V), analog (3.3V), and RF (2.8V) rails. IC Role / Device Role / Timing Role: Mini-PMIC providing sequenced, low-noise, high-efficiency regulation across four critical voltage domains. Use Value: Eliminates need for four discrete regulators and associated passives, reducing footprint by >65% while maintaining <±3% output accuracy and <200ns transient response. |
Use Scenario: Supplies multi-sensor fusion hub (accelerometer, gyroscope, HRM) in compact fitness trackers with strict thermal and size constraints. IC Role / Device Role / Timing Role: Single-chip power source delivering tightly regulated, low-noise rails from a 3.7V Li-ion cell. Use Value: Enables 24-hour battery life via 50µA quiescent current in skip mode and active discharge preventing phantom loads during sleep states. |
| Portable Medical Diagnostic Device | Industrial Handheld Terminal |
Use Scenario: Powers FPGA-based point-of-care ultrasound controller requiring stable 1.2V core, 1.8V transceiver, 3.3V ADC reference, and 2.8V display backlight driver. IC Role / Device Role / Timing Role: Integrated PMIC ensuring rail monotonicity, low EMI, and fail-safe shutdown during battery brownout. Use Value: Meets IEC 60601-1 leakage and thermal safety requirements via dedicated ground planes and thermal pad integration. |
Use Scenario: Provides power to ruggedized barcode scanner with ARM CPU, CMOS imager, and Bluetooth radio operating from 3.7V Li-ion. IC Role / Device Role / Timing Role: Sequenced regulator managing cold-start behavior, battery voltage sag compensation, and RF interference mitigation. Use Value: Achieves >85% efficiency at 500mA load and withstands -40°C to +85°C ambient via validated thermal design and UVLO hysteresis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65023BRSBT | Triple 1.5A buck + dual 300mA LDO; 2.25MHz switching; fixed 1.2V/1.5V/1.8V bucks; no active discharge. | Targets OMAP3/DM365 platforms; lacks independent LDO enable pins and thermal hysteresis spec. | Choose when needing third buck rail and lower cost, but accept larger solution size and reduced sequencing flexibility. |
| RT5782AZSP | Dual 2A buck + dual 300mA LDO; 2.5MHz switching; adjustable bucks; 1.2V/1.8V/3.3V/2.8V factory-set variants available. | Designed for automotive infotainment; AEC-Q200 qualified; higher max input (6V) and wider temp range (-40°C to +105°C). | Choose for extended temperature or automotive-grade reliability; verify LDO noise specs match medical/sensor requirements. |
Compared with TPS65023BRSBT and RT5782AZSP, the ISL9307IRTWCNJZ-T7A offers superior light-load efficiency via 3MHz skip mode, smaller 4×4mm footprint, and dedicated LDO ground isolation - making it optimal for consumer portable devices where size, battery life, and EMI are primary constraints.
Availability
ISL9307IRTWCNJZ-T7A is available at Aetrix Electronics and suitable for smartphone application processors, wearable sensor hubs, portable medical diagnostics, and industrial handheld terminals requiring stable component supply with full lifecycle support.
Supply support for ISL9307IRTWCNJZ-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 ISL9307IRTWCNJZ-T7A belongs to Renesas' mini-PMIC product line, engineered specifically for space- and battery-constrained portable electronics requiring integrated, sequenced, and low-noise multi-rail power delivery from single-cell Li-ion sources.
FAQ
What output voltages does the ISL9307IRTWCNJZ-T7A provide?
The ISL9307IRTWCNJZ-T7A delivers four fixed-output rails: DCD1 = 1.2V, DCD2 = 1.8V, LDO1 = 3.3V, and LDO2 = 2.8V. These factory-set values eliminate external feedback resistors and simplify design validation. All outputs maintain ±3% accuracy across load, line, and temperature conditions per the FN7931 datasheet specifications.
Does the ISL9307IRTWCNJZ-T7A support power sequencing?
Yes, the ISL9307IRTWCNJZ-T7A supports precise power sequencing via four independent enable pins: ENDCD1, ENDCD2, ENLDO1, and ENLDO2. Each pin accepts standard CMOS logic levels (1.4V high threshold), allowing external controllers or simple RC delays to stagger startup timing - critical for avoiding bus contention or latch-up in multi-rail SoC systems.
What is the maximum input voltage for the ISL9307IRTWCNJZ-T7A?
The ISL9307IRTWCNJZ-T7A supports VINDCD1 and VINDCD2 inputs from 2.5V to 5.5V, and VINLDO from 1.5V to 5.5V. Absolute maximum ratings allow SW pins up to 6.5V, but recommended operation stays within the 2.5V–5.5V range to ensure reliability and meet the -40°C to +85°C ambient specification.
How does the ISL9307IRTWCNJZ-T7A manage efficiency at light loads?
The ISL9307IRTWCNJZ-T7A enters pulse-skipping mode under light loads, reducing switching frequency to minimize gate charge and core losses. This achieves 50µA typical quiescent current with both bucks enabled and no load - extending battery life significantly compared to forced-PWM alternatives.
Is thermal management supported on the ISL9307IRTWCNJZ-T7A?
Yes, the ISL9307IRTWCNJZ-T7A includes integrated thermal shutdown at 155°C with 30°C hysteresis, plus an exposed thermal pad requiring connection to a solid ground plane with ≥9 vias. The 40.2°C/W θJA value (16-lead TQFN) enables reliable operation up to 125°C junction temperature when properly mounted per the L16.4X4G package guidelines.
ISL9307IRTWCNJZ-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:
- 1.2V, 1.5A
- Voltage/Current - Output 2:
- 1.8V, 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)
ISL9307IRTWCNJZ-T7A FAQ
1.How can I place an order for ISL9307IRTWCNJZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9307IRTWCNJZ-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 ISL9307IRTWCNJZ-T7A reliable?
The price and inventory of ISL9307IRTWCNJZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9307IRTWCNJZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL9307IRTWCNJZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9307IRTWCNJZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9307IRTWCNJZ-T7A?
ISL9307IRTWCNJZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9307IRTWCNJZ-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 ISL9307IRTWCNJZ-T7A?
For technical support, including ISL9307IRTWCNJZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9307IRTWCNJZ-T7A requirements.
6.How does Aetrix verify that ISL9307IRTWCNJZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL9307IRTWCNJZ-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 ISL9307IRTWCNJZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL9307IRTWCNJZ-T7A?
All ISL9307IRTWCNJZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL9307IRTWCNJZ-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 ISL9307IRTWCNJZ-T7A part is unused and in its original packaging.
Return procedure for ISL9307IRTWCNJZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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