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Product Detailed Parameters
- Description：HIGH-PERFORMANCE STEP-DOWN DC/DC
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR)
- Type：DC DC Controller
- Topology：Step-Down (Buck)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：22V
- Voltage - Supply (Max)：65V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：-
- Dimming：Analog, PWM
- Applications：LED Lighting
- Operating Temperature：-40°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：10-SOP (0.154", 3.90mm Width)
- Supplier Device Package：10-SOIC
- Grade：-
- Qualification：-
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Overview
The iW380-32B is a high-performance, single-channel step-down DC/DC controller designed for LED lighting applications. It operates within an input voltage range of 22V to 78V and supports output voltages up to 98% of the input. The device features True DC Dimming technology, providing a dimming resolution of 0.0625% across a 0.0625% to 100% range. It delivers ±3% LED current accuracy and supports up to 150W output power. The IC is housed in a 10-lead SOIC package and includes comprehensive protection features such as input OVP, OCP, OSP, UVLO, and OTP.
Feature Summary
- Implements Renesas' True DC Dimming technology to eliminate flicker across the entire dimming range.
- Supports multiple dimming interfaces including PWM, analog, RSET, and 0-10V inputs.
- Integrates light-off mode to completely turn off LED light at minimum dimming levels.
- Provides multi-mode operation supporting Constant Current (CC), Constant Voltage (CV), and Constant Power (CP).
Applications
- Commercial solid-state lighting systems
- Second-stage buck conversion in AC/DC lighting architectures
- Stand-alone DC/DC converters for LED drivers
Procurement Notes
Verify component authenticity through authorized Renesas distributors or official channels. Confirm RoHS compliance status via the manufacturer's datasheet. Check current availability as supply may be limited. Ensure the specific suffix matches design requirements. Validate thermal performance against application constraints before finalizing procurement.
Selection Notes
Select this controller for applications requiring high-resolution dimming without flicker. It is suitable for designs needing post-regulation from offline AC/DC converters. Consider the 22V-78V input range and 150W power limit. Verify compatibility with DALI-2 or wireless dimming protocols if required. Ensure the SOIC-10 package fits the PCB layout constraints.
Part Context
The iW380 series belongs to Renesas' portfolio of LED lighting driver ICs. It is engineered for commercial lighting where high efficiency and precise control are critical. The device functions as a non-isolated buck controller, often used as a second-stage converter to minimize low-frequency ripple.
Replacement Considerations
Consult the official iW380 datasheet for cross-reference information. Verify pinout and electrical parameter compatibility before substituting. No public substitute part numbers are confirmed in the provided documentation.
