SSL21082AT 반도체 회로 부품 판매점
Mains dimmable LED driver IC
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 NXP Semiconductors |
SSL21082AT
Mains dimmable LED driver IC
Rev. 6 — 3 October 2013
Product data sheet
1. General description
The SSL21082AT is a high-voltage Integrated Circuit (IC) for driving retrofit LED lamps in
general lighting applications. It enables the implementation of a very compact low-cost
system solution. The IC has an integrated internal HV switch and work as Boundary
Conduction Mode (BCM) buck converter.
The SSL21082AT is supplied by a start-up bleeder resistor, a dV/dt supply using
capacitive coupling from the drain or any other auxiliary supply. The IC supply current is
low. An internal clamp limits the supply voltage.
The IC has an accurate output current control and can be operated using Pulse-Width
Modulation (PWM) dimming. In addition, several protection features are available such as
easy external temperature feedback.
The main benefits of this IC include:
• Small Printed-Circuit Board (PCB) footprint and compact solution
• High efficiency (up to 90 %) 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 modes
• Single inductor used for non-isolated configurations because of internal
demagnetization detection and dV/dt supply
The IC is designed to start up directly from the HV supply using an internal high-voltage
current source. An internal clamp limits the supply voltage.
NXP Semiconductors
SSL21082AT
Mains dimmable LED driver IC
2. Features and benefits
LED driver IC for driving strings of LEDs or high-voltage LED modules from a rectified
mains supply
Power-efficient boundary conduction mode operation with:
No reverse recovery losses in freewheel diode
Zero-Current Switching (ZCS) for switch turn-on
Zero-voltage or valley switching for switch turn-off
Minimal required inductance value and size
Fast transient response through cycle-by-cycle current control:
No overshoot or undershoot in the LED current
Simple high input power factor solution (> 0.9)
Internal protection features:
UnderVoltage LockOut (UVLO)
Leading-Edge Blanking (LEB)
OverCurrent Protection (OCP)
Internal OverTemperature Protection (OTP)
Brownout protection
Output Short Protection (OSP)
Mains phase cut dimmable LED driver solution:
Supports both leading-edge and trailing-edge dimmers
Easy external temperature protection with a single NTC
Open output protection using external components
Compatible with wall switches with built-in indication light during standby
IC lifetime easily matches or surpasses LED lamp lifetime
Input current distributed evenly over the phase, reducing required output capacitor
size and bleeder dissipation
3. Applications
The SSL21082AT is intended for mains dimmable compact LED lamps for single mains
input voltages. Mains input voltages include 100 V (AC) and 120 V (AC).
SSL21082AT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 3 October 2013
© NXP B.V. 2013. All rights reserved.
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제조업체: NXP Semiconductors
( nxp )
SSL21082AT led
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[ SSL21082AT.PDF ]
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국내 전력반도체 판매점
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