UBA2028T

600 V dimmable power IC for compact fluorescent lamps


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The UBA2028 is a high voltage power IC that drives and controls electronically ballasted Compact Fluorescent Lamps (CFLs). The IC includes a Metal-Oxide-Semiconductor Transistor (MOST) half-bridge power circuit, a dimming function, a high voltage level shift circuit, an oscillator function, a lamp voltage monitor, a current control function, a timer function and various protections.

Features and benefits

  • Two internal 600 V, 3 Ω max MOST half-bridge power circuits
  • For steady state currents up to 280 mA
  • For ignition currents up to 1.5 A
  • Adjustable preheat time
  • Adjustable preheat current
  • Current controlled operating
  • Single ignition attempt
  • Adaptive non-overlap time control
  • Integrated high voltage level shift function
  • Power-down function
  • Protection against lamp failures or lamp removal
  • Capacitive mode protection

Applications

  • 5 W to 25 W dimmable CFLs, provided that the max. junction temp. is not exceeded
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram: UBA2028T
Block diagram: UBA2028T

Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
VHVvoltage on pin HVoperating510V
VHVvoltage on pin HVoperating; during 1 s600V
VDDsupply voltage14V
Ronon-state resistanceTR1 high-side power3Ω
Ronon-state resistanceTR2 high-side power3Ω
Tjjunction temperature-25150°C
Plampburner power20W
Vmainsmains voltage230V

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
UBA2028T/N1UBA2028T/N1,5189352 890 62518Volume productionSOT163-1
(SO20) 		Reel Dry Pack, SMD, 13"Standard Marking
UBA2028T/DB/230VUBA2028T/DB/230V,59352 905 05598DevelopmentSOT163-1
(SO20) 		Standard Marking
UBA2028T/DB/120VUBA2028T/DB/120V,59352 905 04598DevelopmentSOT163-1
(SO20) 		Standard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1HVhigh-voltage inputUBA2028 Pin diagram3d outline
2FSfloating supply voltage; supply for high-side switch
3FSfloating supply voltage; supply for high-side switch
4GNDground
5ACMcapacitive mode input
6LVSlamp voltage sensor input
7VREFreference voltage output
8CSPpositive input for the average current sensor
9CSNnegative input for the average current sensor
10CTpreheat timer output
11CSWinput of voltage controlled oscillator
12CFvoltage controlled oscillator output
13IREFinternal reference current input
14GNDground
15GLOgate output for the low-side switch, must be wired to pin 18
16VDDlow voltage supply
17PCSpreheat current sensor input
18GLIgate input for the low-side switch, must be wired to pin 15
19SHsource for the high-side switch
20SLsource low-side switch, connected to PGND via a resistor

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
UBA2028T/N1UBA2028T/N1,518UBA2028T/N1Always Pb-free33
UBA2028T/DB/230VUBA2028T/DB/230V,5Not availableNANA
UBA2028T/DB/120VUBA2028T/DB/120V,5Not availableNANA
Quality and reliability disclaimer

Quality and reliability disclaimer

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NXP Semiconductors is providing this data for your convenience only. Please note however that NO WARRANTY, REPRESENTATION, GUARANTEE OR LEGALLY BINDING PRODUCT DESCRIPTION is provided by publishing this informational data, nor does NXP Semiconductors acknowledge or accept any liability related thereto. The documentation and data on NXP Semiconductors products can be found in the data sheets as officially published by NXP Semiconductors. For all purchase of products from NXP Semiconductors the NXP Semiconductors' General Terms and Conditions of Commercial Sale will apply.

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Documentation for this product

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
UBA2028T/N19352 890 62518UBA2028T/N1,518NADIGI-KEY CORPORATION2,0005/23/2012Buy online 
   NAFUTURE ELECTRONICS1,8005/22/2012Buy online 
   EUFUTURE ELECTRONICS UK1,8005/22/2012Buy online 
   ASIAFUTURE ELECTRONICS- ASIA1,8005/22/2012Buy online 
   ASIAAVNET EXPRESS ASIA505/7/2012Buy online 
   ASIAELEMENT14 APAC275/23/2012Buy online 
   NANEWARK/ELEMENT14245/23/2012Buy online 
   EUFARNELL245/23/2012Buy online 
   ASIASACL - Hong Kong/Chinayes200005/01/2012Buy online 
   JAPANCHIP ONE STOPyes05/14/2012Buy online 
UBA2028T/DB/230V9352 905 05598UBA2028T/DB/230V,5      not available
UBA2028T/DB/120V9352 905 04598UBA2028T/DB/120V,5      not available

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