UBA20262T

600 V Power IC for step dimmable compact fluorescent lamps


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The UBA20262 is a high voltage power IC intended to drive and control high power self-ballasted Compact Fluorescent Lamps (CFL) for 230 V mains. The UBA20262 includes a half-bridge power circuit made up of two NMOST power FETs with advanced features for step dimming and lamp current controlled boost feature for boosting cold (amalgam) CFL lamps. The controller contains a half-bridge drive function, including a high voltage level-shift circuit with integrated bootstrap diode, an oscillator function, a current control function both for preheat and burn, timer function and protection circuits. The UBA20262 is supplied via a high efficient dV/dt supply circuit.

Features and benefits

  • Two internal 600 V, 3 Ω , maximum 2.7 A NMOST half-bridge power MOSFETs
  • Integrated high voltage level-shift function with integrated bootstrap diode
  • Coil saturation protection during ignition
  • Adjustable saturation protection level
  • Adjustable preheat time
  • Adjustable preheat current
  • Ignition lamp current detection
  • Adjustable boost timing
  • Fixed boost current ratio of 1.5
  • Gradually boost to burn transition timing
  • 4-level step dimming adjustment using a standard on/off mains switch
  • Adjustable memory retention time for step dimming
  • Adjustable minimum dimming level
  • OverTemperature Protection (OTP)
  • Capacitive Mode Protection (CMP)
  • OverPower Protection (OPP)
  • OverCurrent Protection (OCP) in both boost and burn state
  • Current controlled operation in both boost and burn state
  • External power-down function

Applications

  • Dimmable compact fluorescent lamps at power levels between 5 W and 20 W
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram
Block diagram

Demo boards

UBA20262DB01UBA20262DB01

UBA20262DB01 18 W 230 V Step-dimming CFL reference design


Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
VDHSvoltage on pin DHSoperating500V
VDHSvoltage on pin DHSduring 1 s600V
VDDsupply voltage14V
Ronon-state resistanceLow Side33.6Ω
Ronon-state resistanceHigh Side33.6Ω
Tjjunction temperature-40150°C
Plamplamp power20W
Vmainsmains voltage230V

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
UBA20262T/1UBA20262T/1,5189352 953 25518Volume productionSOT163-1
(SO20) 		Reel Dry Pack, SMD, 13"Standard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1SLSsource low-side switchPin configuration for UBA20261/2 (SOT109-1)3d outline
2SLSsource low-side switch
3SLSsource low-side switch
4LSATcoil saturation level input
5PGNDpower ground
6VDDlow voltage supply
7RREFinternal reference current input
8CFvoltage controlled oscillator capacitor
9MDLminimum dimming level input
10CIvoltage controlled oscillator input integrating capacitor
11CSIcurrent feedback sense input
12n.c.not connected
13CPpreheat timing capacitor
14CBboost timing capacitor
15SGNDsignal ground
16FSfloating supply voltage
17HBOhalf-bridge output; open output
18DHShigh voltage supply; drain high-side switch
19HBOhalf-bridge output; open output
20HBOhalf-bridge output; open output

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
UBA20262T/1UBA20262T/1,518UBA20262T/1Always Pb-free33
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Documentation for this product

TypeFormatTitleDate
Data sheetpdf600 V and 350 V power IC for step dimmable CFLs (v.2.0)2011-10-10
Application notepdfSMPS EMC and layout guidlines (v.1.0)2011-02-18
Application notepdfTriac dimmable CFL application using the UBA2028/UBA2014/UBA2027x (v.2.0)2012-02-27
Application notepdfDimmable CFL using the UBA2026X family (v.1.0)2012-04-04
LeafletpdfNXP GreenChip lighting driver ICs UBA2026x and UBA2027x (v.1.0)2012-01-30
LogogifGreenChip logo (v.1.0)2012-04-20
User manualpdf230 V and 120 V reference design using UBA20261/2 (v.1.0)2011-09-30

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
UBA20262T/19352 953 25518UBA20262T/1,518NADIGI-KEY CORPORATION4,0005/23/2012Buy online 
   NAFUTURE ELECTRONICS205/22/2012Buy online 
   EUFUTURE ELECTRONICS UK205/22/2012Buy online 
   ASIAFUTURE ELECTRONICS- ASIA205/22/2012Buy online 

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Demo boards

UBA20262DB01
UBA20262DB01

UBA20262DB01 18 W 230 V Step-dimming CFL reference design

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