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Product Detailed Parameters
- Description：IC LED DRIVER OFFL TRIAC 16QSOP
- Series：-
- Mfr：Renesas Electronics Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：AC DC Offline Switcher
- Topology：Flyback, Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：No
- Number of Outputs：1
- Voltage - Supply (Min)：9V
- Voltage - Supply (Max)：20V
- Voltage - Output：-
- Current - Output / Channel：-
- Frequency：25kHz ~ 1MHz
- Dimming：Triac
- Applications：Lighting
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：16-QSOP
- Grade：-
- Qualification：-
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Overview
The ISL1904FAZ-T7A is a high-performance, critical conduction mode (CrCM) flyback controller designed for single-stage AC-DC conversion. It functions as a standalone LED driver with configurable output current ranging from 20mA to 150mA via external resistors, eliminating the need for a microcontroller. The device operates within an input voltage range of 9V to 20V and supports a wide operating temperature range from -40°C to +125°C. Packaged in TDFN-8, it integrates essential protection features for solid-state lighting applications.
Feature Summary
- Implements Critical Conduction Mode (CrCM) flyback control for efficient single-stage power factor correction and regulation.
- Operates as a standalone LED driver without requiring external microcontrollers or complex firmware.
- Features adjustable output current capability through simple external resistor configuration.
Applications
- Solid State Lighting systems
- AC Mains LED drivers
- Single-stage PFC converters
Procurement Notes
Verify component status carefully as this part is officially obsolete and no longer manufactured by Renesas Electronics Corporation. Sourcing new original units may be difficult; consider checking authorized distributors for remaining stock or evaluating qualified substitute components that meet the same electrical specifications and pinout requirements.
Selection Notes
Select this controller for cost-sensitive, low-power LED lighting designs requiring integrated power factor correction. It is suitable for applications where microcontroller overhead is undesirable. Ensure the design accommodates the CrCM operation characteristics and verify that the required LED string voltage and current fall within the specified operational limits of the device.
Part Context
The ISL1904 series belongs to Renesas' portfolio of high-performance power management ICs, specifically targeting energy-efficient lighting solutions. This component represents the integration of power factor correction and constant current regulation into a single chip, simplifying the bill of materials and reducing the overall footprint of AC-powered LED drivers.
Replacement Considerations
Official substitutes include parametric equivalents such as the ISL1904FAZ and ISL1904FAZ-T. Verify compatibility regarding package type and thermal performance when transitioning between these variants.
