Overview
The SSL2129AT/1118 is a dimmable LED driver IC produced by NXP USA Inc. This integrated circuit is designed for driving LED lamps in general lighting applications, offering a compact and efficient solution. It features a high power factor (>0.9) and high efficiency (up to 95%) for non-dimmable high power factor solutions. The IC supports various topologies including buck, buck/boost, and flyback modes, making it highly flexible for different lighting configurations.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | SSL2129AT/1118 |
| Category | AC DC Offline Switcher |
| Topology | Flyback, Step-Down (Buck), Step-Up (Boost) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Voltage - Output | 600V |
| Number of Outputs | 1 |
| Internal Switch(s) | No |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Voltage - Supply (Max) | 16V |
| Voltage - Supply (Min) | 8V |
| Mounting Type | Surface Mount |
Key Features
- Small Printed-Circuit Board (PCB) footprint and compact solution
- High efficiency (up to 95%) for non-dimmable high power factor solutions
- High power factor (>0.9)
- Ease of integration and many protection features
- Low electronic Bill Of Material (BOM)
- Mains phase-cut dimmable using external components
- Highly flexible IC for use in buck, buck/boost and flyback modes
- Single inductor used for non-isolated configurations due to internal demagnetization detection
- Power-efficient boundary conduction mode of operation with Zero-Current Switching (ZCS) for switch turn-on and zero-voltage or valley switching for switch turn-off
- Fast transient response through cycle-by-cycle current control with no over or undershoots in the LED current
- Internal protection features including UnderVoltage LockOut (UVLO), Leading-Edge Blanking (LEB), OverCurrent Protection (OCP), and Internal OverTemperature Protection (OTP)
Applications
The SSL2129AT/1118 is primarily used in general lighting applications, including driving strings of LEDs or high-voltage LED modules from a rectified mains supply. It is suitable for various lighting solutions that require high efficiency, high power factor, and dimmable capabilities.
Q & A
- What is the primary function of the SSL2129AT/1118 IC?
The SSL2129AT/1118 is a dimmable LED driver IC designed for driving LED lamps in general lighting applications. - What are the supported topologies by the SSL2129AT/1118?
The IC supports buck, buck/boost, and flyback topologies. - What is the maximum output voltage of the SSL2129AT/1118?
The maximum output voltage is 600V. - What is the operating temperature range of the SSL2129AT/1118?
The operating temperature range is -40°C to 125°C (TA). - Does the SSL2129AT/1118 have internal protection features?
Yes, it includes UnderVoltage LockOut (UVLO), Leading-Edge Blanking (LEB), OverCurrent Protection (OCP), and Internal OverTemperature Protection (OTP). - How does the SSL2129AT/1118 achieve high efficiency?
The IC operates in a power-efficient boundary conduction mode with Zero-Current Switching (ZCS) for switch turn-on and zero-voltage or valley switching for switch turn-off. - Can the SSL2129AT/1118 be used for dimmable lighting solutions?
Yes, it supports mains phase-cut dimming using external components. - What is the package type of the SSL2129AT/1118?
The package type is 8-SOIC (0.154", 3.90mm Width). - Does the SSL2129AT/1118 have a low electronic Bill Of Material (BOM)?
Yes, it is designed to have a low electronic BOM. - How does the SSL2129AT/1118 handle transient responses?
The IC provides fast transient response through cycle-by-cycle current control with no over or undershoots in the LED current.
