SSL21081AT 반도체 회로 부품 판매점
Compact non-dimmable LED driver IC
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 NXP Semiconductors |
SSL21081AT
Compact non-dimmable LED driver IC
Rev. 6 — 3 October 2013
Product data sheet
1. General description
The SSL21081AT is a high-voltage Integrated Circuit (IC) for driving LED lamps in general
mains non-dimmable lighting applications.
The main benefits are:
• Small Printed-Circuit Board (PCB) footprint; compact solution
• High efficiency (up to 95 %)
• Ease of integration
• Low electronic Bill Of Material (BOM)
The IC incorporates a 300 V MOSFET.
The IC works as boundary conduction mode converters, typically in buck configuration. It
has been designed to start up directly from the HV supply by an internal high-voltage
current source. Thereafter, the dV/dt supply is used with capacitive coupling from the drain
or any other auxiliary supply. This function provides full flexibility in the application design.
The IC consumes 1.3 mA of supply current with an internal clamp limiting the supply
voltage.
The IC provides accurate output current control with LED current accuracy within 5 %. It
can be operated using Pulse-Width Modulation (PWM) current regulation. It includes
many protection features including easy LED temperature feedback.
2. Features and benefits
LED driver ICs for driving LED strings from a rectified mains supply
High-efficiency switch mode buck driver product family:
drivers with integrated 300 V (DC) power switches
Controller with power-efficient boundary conduction mode of operation with:
No reverse recovery losses in freewheel diode
Zero Current Switching (ZCS) for turn-on of switch
Zero voltage or valley switching for turn-on of switch
Minimal required inductance value and size
Direct PWM current regulation possible
Fast transient response through cycle-by-cycle current control:
Negligible AC mains ripple at LED current and minimal total capacitor value
No over or undershoots in the LED current
NXP Semiconductors
SSL21081AT
Compact non-dimmable LED driver IC
Internal protections:
UnderVoltage LockOut (UVLO)
Leading-Edge Blanking (LEB)
OverCurrent Protection (OCP)
Internal OverTemperature Protection (OTP)
Brownout protection
Output Short Protection (OSP)
Low component count LED driver solution (see Figure 3):
No Schottky diode required due to ZCS
Easy external temperature protection with a single NTC resistor
Option for soft-start function
Compatible with wall switches with built-in indication light during standby1
IC lifetime easily matches or surpasses LED lamp lifetime
3. Applications
The SSL21081AT is intended for compact mains non-dimmable LED lighting applications
with accurate fixed current output for single mains input voltages. Mains input voltages
include 100 V (AC), 120 V (AC). The output signal can be modulated using a PWM signal.
1. The Hotaru switch is a well-known wall switch with built-in light
SSL21081AT
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
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SSL21081AT led
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[ SSL21081AT.PDF ]
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국내 전력반도체 판매점
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