IC reference design search
IC manufacturers NXP

IC manufacturers (103)

reference designSSL5251 | Demoboard SSL5251DB1332(UM10930)

NXP SSL5251 | Demoboard SSL5251DB1332(UM10930)

Mains dimmable buck-boost LED driver IC

Overview

TopologyBuck-Boost Converter
Input voltage180-280 V
Switching frequency25 kHz
Output 1135 V / 0.26 A
IC revision2

Description

The SSL5251T is a highly integrated, high-precision dimmable controller with an externalMOSFET. It is intended to drive LED lamps in dimmable lighting applications up to 25 W.The SSL5251T is designed for high power factor, phase-dimmable applications.The SSL5251T operates in Boundary Conduction Mode (BCM) with on-time control. Itprovides a constant output current control with good LED output current accuracy.Adaptive switching frequency gives freedom to choose the inductor, which enables theoptimization of inductor size, efficiency and EMI.The SSL5251T can start up and operate in switching mode directly from an externalresistor without capacitor charge pump supply or auxiliary supply. This feature simplifiesthe VCC supply. So, a low-cost off-the-shelf inductor can be used, which provides flexibilityin application design.

Features

  • Supports most available dimming solutions
  • Deep dimming level
  • Flicker-free dimming
  • Low component count ensuring a compact solution and small, single layer
  • Printed-Circuit Board (PCB) footprint
  • Excellent line regulation and load regulation and good LED output current accuracy
  • Efficient BCM operation with:
  • Minimal reverse recovery losses in freewheel diode
  • Zero Current Switching (ZCS) and Valley switching for turn-on of switch
  • Minimal inductance value and size required
  • High efficiency (up to 88 %)
  • Ultra low IC current during operation (< 200 A)
  • Auto-recovery protections:
  • UnderVoltage LockOut (UVLO)
  • Cycle-by-cycle OverCurrent Protection (OCP)
  • Internal OverTemperature Protection (OTP)
  • Output OverVoltage Protection (OVP)
  • Output Short Protection (OSP)
  • Extended IC lifetime

Typical applications

  • low-cost, non-isolated dimmable lighting applications

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
PCB/Cable/Panel
Modularity
Type
L(µH)
IR(A)
ISAT(A)
RDC max.(Ω)
fres(MHz)
Mount
SamplesAvailability & Sample
691312710002
SPECWR-TBL Series 3127 - 5.00 mm Open Horizontal PCB Header, 2, PCB Header
Simu­lation–
Availability
–
Downloads6 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 3127 - 5.00 mm Open Horizontal PCB Header
Pins2 
PCB/Cable/PanelPCB 
ModularityNo 
TypeOpen Horizontal Plug entry 
–
Rated Current15 A
–
–
–
MountTHT 
–Check availability
768772102
SPECWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage), –, –
Simu­lation
Availability
–
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage)
–
–
–
–
Inductance1000 µH
Rated Current0.5 A
Saturation Current0.55 A
DC Resistance2.08 Ω
Self Resonant Frequency1.8 MHz
MountTHT 
–Check availability
750315481
SPECPower Inductor, –, –
Simu­lation–
Availability
–
Downloads–
Status Activei| Production is active. Expected lifetime: >10 years.
Product series Power Inductor
–
–
–
–
–
–
–
–
–
–
–Check availability