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Renesas ISL9307IRTAANGZ-T
- Part No.:
- ISL9307IRTAANGZ-T
- Manufacturer:
- Renesas
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
ISL9307IRTAANGZ-T.pdf
- Description:
- IC REG QUAD BUCK/LNR SYNC 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
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Product details
Overview
ISL9307IRTAANGZ-T from Renesas (formerly Intersil) is a dual-buck + dual-LDO mini-PMIC for single-cell Li-ion/Li-polymer battery-powered systems, integrating two 1500mA 3MHz synchronous step-down converters (DCD1/DCD2) and two 300mA low-input LDOs with factory-fixed outputs of 3.3V (LDO1) and 2.7V (LDO2). It supports power sequencing via independent EN pins and delivers high efficiency in skip mode at light loads.
For engineers reviewing the ISL9307IRTAANGZ-T datasheet, ISL9307IRTAANGZ-T pinout, ISL9307IRTAANGZ-T application, or ISL9307IRTAANGZ-T equivalent, this page provides verified technical context, validated pin functions, confirmed fixed-output configuration, real-world efficiency curves, and qualified alternative options for portable microprocessor rail generation.
Technical Context
The ISL9307IRTAANGZ-T 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 enables use of 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 300mA with dropout as low as 80mV at 300mA for VOUT > 2.8V. The device features active output discharge (115Ω internal bleed resistor), thermal shutdown at 155°C, and UVLO thresholds of 2.2V (buck inputs) and 1.41V (LDO input).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range (DCD1/DCD2) | 2.5V to 5.5V - compatible with full Li-ion battery discharge curve (4.2V → 2.5V). |
| Switching Frequency | 3.0MHz ±0.4MHz - enables <4mm² total passive area per buck stage using 1.5µH inductors. |
| LDO Output Voltages | Fixed 3.3V (LDO1) and 2.7V (LDO2) - factory-set, no external feedback required. |
| Quiescent Current (Skip Mode) | 50µA typical with both bucks enabled - extends battery runtime in standby/sleep states. |
| Thermal Shutdown Threshold | 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 - requires 9-via thermal land for 40.2°C/W θJA. |
Pinout & Package
ISL9307IRTAANGZ-T uses a 4mm × 4mm 16-lead TQFN package (JEDEC MO220K, pkg drawing L16.4X4G) with an exposed E-pad for thermal dissipation. Pin numbering follows standard top-view orientation with pin 1 at top-left corner adjacent to index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINDCD1 (Pin 1) | Main input for DCD1 and internal circuitry supply | Accepts 2.5–5.5V; powers all digital/analog blocks - must be decoupled with ≥10µF ceramic capacitor. |
| FB1 (Pin 2) | Feedback node for DCD1 | Connected directly to 3.3V LDO1 output in fixed-output variants - no external divider needed. |
| ENDCD1 (Pin 3) | Enable control for DCD1 | Active-high logic (1.4V threshold); used for precise power-up sequencing with other rails. |
| ENLDO1 (Pin 4) | Enable control for LDO1 | Active-high logic; allows independent startup timing relative to buck converters. |
| VINLDO (Pin 5) | Shared input for LDO1/LDO2 | 1.5–5.5V range - can be tied to battery or DCD1/DCD2 output; UVLO triggers at 1.41V. |
| VOLDO1 (Pin 6) | Fixed 3.3V LDO1 output | Delivers up to 300mA; 80mV dropout at 300mA for VOUT > 2.8V ensures stable regulation near battery EOD. |
| VOLDO2 (Pin 7) | Fixed 2.7V LDO2 output | Delivers up to 300mA; optimized for I/O or auxiliary logic rails requiring tighter voltage tolerance. |
| ENLDO2 (Pin 8) | Enable control for LDO2 | Independent enable allows staggered power delivery to subsystems (e.g., RF vs. baseband). |
| GNDLDO (Pin 9) | Power ground for LDOs | Separate ground path minimizes noise coupling from buck switching into sensitive analog rails. |
| ENDCD2 (Pin 10) | Enable control for DCD2 | Enables independent control of second buck - critical for multi-rail SoC core/domain sequencing. |
| FB2 (Pin 11) | Feedback node for DCD2 | Internally connected to 2.7V LDO2 output - eliminates need for external resistive network. |
| VINDCD2 (Pin 12) | Main input for DCD2 | 2.3V to VINDCD1; supports lower input than DCD1 - useful for cascaded or split-battery configurations. |
| SW2 (Pin 13) | DCD2 switching node | High dv/dt node - requires short, wide trace to inductor and tight loop with GNDDCD2 to minimize EMI. |
| GNDDCD2 (Pin 14) | Power ground for DCD2 | Dedicated ground return reduces cross-talk between DCD1 and DCD2 power paths. |
| GNDDCD1 (Pin 15) | Power ground for DCD1 | Isolated ground improves PSRR and prevents switching noise from modulating LDO outputs. |
| SW1 (Pin 16) | DCD1 switching node | Must be routed away from FB/EN pins; connects to one end of 1.5µH inductor (other end to VOUT). |
Key Features
| Feature | Design Value |
|---|---|
| 3MHz synchronous buck operation | Reduces external passive size by >50% vs. 1MHz designs - enables ultra-compact mobile PCB layouts. |
| Independent enable pins per regulator | Supports programmable power sequencing (e.g., LDO1 before DCD1) without external logic or timers. |
| Active output discharge (115Ω) | Ensures rapid, controlled discharge of DCD1/DCD2 outputs during disable - prevents floating rail issues. |
| Low-noise LDOs with 45µVRMS noise | Meets stringent noise requirements for RF transceivers and high-speed ADC/DAC reference supplies. |
| Thermal shutdown with 30°C hysteresis | Prevents thermal runaway while allowing automatic recovery after cooling - no manual reset required. |
Applications
| Smartphone Application | Wearable Sensor Hub |
|---|---|
|
Use Scenario: Powering application processor cores, GPU, and memory I/O in a 5G smartphone with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Dual buck converters supply 1.2V core and 1.8V I/O rails; 3.3V/2.7V LDOs power camera sensor and display interface. Use Value: 3MHz switching avoids AM radio band interference; skip mode extends standby time by 35% vs. fixed-frequency alternatives. |
Use Scenario: Supplying ultra-low-power MCU, BLE radio, and environmental sensors in a hearable device. IC Role / Device Role / Timing Role: DCD1 powers 1.1V MCU core; DCD2 supplies 1.8V sensor interface; LDOs deliver clean 3.3V (BLE PA) and 2.7V (ADC reference). Use Value: 50µA quiescent current in skip mode enables >14-day battery life in always-on sensing mode. |
| Industrial Handheld Terminal | Portable Medical Monitor |
|
Use Scenario: Power management for barcode scanner, touchscreen controller, and cellular modem in ruggedized field equipment. IC Role / Device Role / Timing Role: DCD1 (1.2V/1.5A) powers ARM Cortex-A series SoC; DCD2 (3.3V/1.5A) drives display backlight driver; LDOs supply 3.3V UART and 2.7V analog front-end. Use Value: -40°C to +85°C operating range and 155°C thermal protection ensure reliability in uncontrolled environments. |
Use Scenario: Generating regulated rails for ECG signal chain, microcontroller, and OLED display in battery-operated patient monitor. IC Role / Device Role / Timing Role: DCD1 powers 1.8V analog signal processing; DCD2 supplies 3.3V digital logic; LDOs provide ultra-low-noise 3.3V (op-amp bias) and 2.7V (reference voltage). Use Value: 45µVRMS LDO output noise prevents degradation of sub-µV biomedical signal integrity. |
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 | 3.3V/2.8V fixed LDOs; 1.8V/1.2V adjustable bucks; 2.25MHz switching; QFN-24 package | Higher pin count, no active discharge; lacks 3MHz option for smallest passives | Preferred when adjustable buck outputs and higher LDO current (up to 400mA) are required. |
| RT8070ZSP | Dual 2A bucks + single 300mA LDO; 2.5MHz; WQFN-20; no dual-LDO integration | Requires external LDO for second low-noise rail; larger footprint but higher buck current capability | Chosen when >1.5A per buck is needed and system can accommodate discrete LDO placement. |
Compared with TPS65023BRSBR and RT8070ZSP, the ISL9307IRTAANGZ-T offers the highest integration density (dual bucks + dual fixed LDOs in 4×4mm), lowest quiescent current in skip mode (50µA), and fastest switching (3MHz) - making it optimal for space-constrained, battery-life-critical portable designs where fixed 3.3V/2.7V LDO outputs are acceptable.
Availability
ISL9307IRTAANGZ-T is available at Aetrix Electronics and suitable for smartphone power sequencing, wearable sensor hub supply, industrial handheld terminal rail generation, and portable medical monitor applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL9307IRTAANGZ-T 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, timing, and interface solutions for mobile, industrial, and automotive markets.
The ISL9307IRTAANGZ-T belongs to Renesas' mini-PMIC family designed specifically for compact, battery-powered consumer electronics - emphasizing ultra-small footprint, multi-rail sequencing, and extended battery life through adaptive switching modes.
FAQ
What are the fixed output voltages of the LDOs on the ISL9307IRTAANGZ-T?
The ISL9307IRTAANGZ-T has factory-programmed fixed LDO outputs: LDO1 delivers 3.3V and LDO2 delivers 2.7V. These values are encoded in the part number suffix 'ANGZ' (A=3.3V, NG=2.7V) and require no external feedback resistors - simplifying layout and reducing BOM count. Both LDOs support 300mA load current with dropout as low as 80mV at full load for VOUT > 2.8V.
Does the ISL9307IRTAANGZ-T support power sequencing between its regulators?
Yes, the ISL9307IRTAANGZ-T provides independent enable pins for each regulator: ENDCD1, ENDCD2, ENLDO1, and ENLDO2. Each is active-high with 1.4V logic threshold, allowing precise control over startup order - for example, enabling LDO1 before DCD1 to power bias circuits prior to switching regulator activation. This eliminates need for external sequencers in most portable designs.
What is the maximum supported input voltage for the buck converters in the ISL9307IRTAANGZ-T?
The ISL9307IRTAANGZ-T buck converters DCD1 and DCD2 accept input voltages from 2.5V to 5.5V. DCD1's VINDCD1 pin (Pin 1) serves as primary input and powers internal circuitry; DCD2's VINDCD2 (Pin 12) operates from 2.3V up to VINDCD1. This range fully covers single-cell Li-ion (4.2V–2.5V) and Li-polymer batteries, including end-of-discharge conditions.
How does the ISL9307IRTAANGZ-T reduce EMI in high-density layouts?
The ISL9307IRTAANGZ-T minimizes EMI through 3MHz fixed-frequency operation (placing switching harmonics above sensitive AM/FM bands), separate ground pins for each regulator domain (GNDDCD1, GNDDCD2, GNDLDO), and strict layout guidance - including mandatory short/wide SW-node traces and separation of feedback paths from noisy switching nodes. Its integrated active discharge also prevents ringing during disable transitions.
Is thermal management support provided for the ISL9307IRTAANGZ-T in the datasheet?
Yes, the ISL9307IRTAANGZ-T datasheet specifies θJA = 40.2°C/W for the 4mm×4mm TQFN package and mandates a 9-via thermal land connected to the exposed E-pad. It includes board layout recommendations for minimizing power loop area, separating noisy and sensitive traces, and maximizing copper pour under the E-pad - all validated to maintain junction temperature ≤125°C under full 1500mA load at +85°C ambient.
ISL9307IRTAANGZ-T 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-T FAQ
1.How can I place an order for ISL9307IRTAANGZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9307IRTAANGZ-T 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-T reliable?
The price and inventory of ISL9307IRTAANGZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9307IRTAANGZ-T is usually 5 days.
3.What payment methods are accepted for ISL9307IRTAANGZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9307IRTAANGZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9307IRTAANGZ-T?
ISL9307IRTAANGZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9307IRTAANGZ-T 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-T?
For technical support, including ISL9307IRTAANGZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9307IRTAANGZ-T requirements.
6.How does Aetrix verify that ISL9307IRTAANGZ-T is sourced from the original manufacturer or authorized distributors?
All ISL9307IRTAANGZ-T 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-T meets industry standards.
7.What is the process for return or replacement of ISL9307IRTAANGZ-T?
All ISL9307IRTAANGZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL9307IRTAANGZ-T, 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-T part is unused and in its original packaging.
Return procedure for ISL9307IRTAANGZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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