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Product Detailed Parameters
- Description：IC REG QUAD BUCK/LNR 3MHZ 16TQFN
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR)
- Topology：Step-Down (Buck) (2), Linear (LDO) (2)
- Number of Outputs：4
- Frequency - Switching：3MHz
- Voltage/Current - Output 1：1.2V, 1.5A
- Voltage/Current - Output 2：1.5V, 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
- Mounting Type：Surface Mount
- Package / Case：16-WQFN Exposed Pad
- Supplier Device Package：16-TQFN (4x4)
- Grade：-
- Qualification：-
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Overview
The ISL9305IRTHWBNLZ-T is a power management integrated circuit (PMIC) manufactured by Renesas Electronics Corporation. It features four regulated outputs: two step-down (buck) converters and two linear regulators (LDOs). The switching frequency is 3MHz. Output 1 provides 1.2V at 1.5A. Output 2 is adjustable from 0.8V to VIN with a 1.5A capacity. The device operates within an input voltage range of 1.5V to 5.5V and supports I2C communication for control. It is housed in a 16-TQFN package.
Feature Summary
- Integrates dual high-current buck converters and dual low-dropout regulators for comprehensive power sequencing.
- Supports digital configuration via I2C interface for flexible output voltage and timing adjustments.
- Utilizes current mode control architecture for stable operation under varying load conditions.
Applications
- Power supply systems for Field Programmable Gate Arrays (FPGAs)
- Embedded controller power distribution networks
- Signal processing unit voltage regulation
Procurement Notes
Verify the specific suffix against official Renesas documentation to confirm pin compatibility and electrical specifications, as variations exist within the ISL9305 family. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the source document explicitly lists this part number as active or identifies its end-of-life status accurately.
Selection Notes
Select this component when a compact solution is required for FPGA or MCU core power rails. The dual 1.5A buck converters suit high-current digital logic, while LDOs provide clean power for sensitive analog sections. Verify that the 3MHz switching frequency aligns with electromagnetic interference constraints and inductor size limitations in the target design.
Part Context
This IC belongs to the ISL9305 series of quad-output PMICs designed for portable and embedded applications. It consolidates multiple power stages into a single package to reduce board space. The device is intended for systems requiring precise voltage regulation and sequential power-up/down capabilities for complex digital processors.
Replacement Considerations
Check for direct cross-reference part numbers listed in the manufacturer's obsolescence notices or replacement guides. Ensure any substitute maintains the same 16-TQFN footprint and compatible I2C addressing if used in existing designs.
FAQ
What is the maximum load current for the buck converters?
Each of the two step-down converters can supply up to 1.5A of load current.
How is the output voltage controlled?
The device supports I2C communication for digital control and allows external feedback resistors for setting default output voltages on the buck converters.
