UBA3070T

LED backlight driver IC


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The UBA3070 driver IC is the first member of a first generation of power-efficient LED backlight driver ICs. Highly efficient, flexible and reliable LED drivers can easily be designed using the UBA3070 control IC

Features and benefits

  • Switch-mode buck controller that drives strings of LEDs up to 600 V power-efficiently
  • Controller with power-efficient Boundary Conduction Mode (BCM) operation:
  • - Virtually no reverse recovery losses in freewheel diode
  • - Zero voltage or valley switching for turn-on of switch
  • - Zero current switching for turn-on of switch
  • - Minimal required inductance value and size
  • Suitable for direct Pulse Width Modulation (PWM) dimming
  • Fast transient response through cycle-by-cycle current control, thereby:
  • - Preventing over or undershoots in the LED current
  • - Enabling efficient PWM dimming
  • Single loosely controlled input voltage required for all UBA3070 driven LED strings in RGB backlights
  • No binning on LED forward voltage required
  • UnderVoltage LockOut (UVLO)
  • Leading Edge Blanking (LEB)
  • OverCurrent Protection (OCP)
  • OverTemperature Protection (OTP)
  • Low cost LED driver solution:
  • - No fast-switching Schottky diode required due to ZCS
  • - No dimming switch or high-side driver required for PWM dimming
  • - Operates with smaller inductor

Applications

  • General lighting applications
  • LED backlighting in LCD televisions and monitors
All information on this product information page is subject to the subsequent disclaimers:
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Show functional diagram

Block diagram: UBA3070T
Block diagram: UBA3070T

Demo boards

SSL4101DB02SSL4101DB02

SSL4101DB02 150 W 4x 1A SSL reference design

UBA3070DB01UBA3070DB01

UBA3070DB01 4-channel DC to DC LED driver demoboard


Parametrics of this product

SymbolParameterConditionsMinTyp/NomMaxUnit
VDRAINvoltage on pin DRAIN-0.4650V
VCCsupply voltage-0.420V
Tjjunction temperature-40145°C
fosc(high)high oscillator frequencyVPWM is LOW145175205kHz
Vmainsmains voltage100277V

Products / Packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarking
UBA3070T/DB/6CHANNELUBA3070T/DB/6CHANN9352 913 04598DevelopmentSOT96-1
(SO8) 		Standard Marking
UBA3070T/N1UBA3070T/N1,1189352 856 92118Volume productionSOT96-1
(SO8) 		Tape reel smdStandard Marking

Pinning information

PinSymbolDescriptionSimplified outlineGraphic symbol
1VCCsupply voltagePin configuration SO8SOT96-1
2GNDground
3PWMPWM input voltage
4MASKmasking input voltage
5SENSEresistor programmable current sense input
6GATEgate driver output
7HVShigh voltage safety spacer: not connected
8DRAINdrain of external MOSFET switch: input for valley sensing

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree conversion dateRHFIFR (FIT)MTBF (hours)MSLMSL LF
UBA3070T/DB/6CHANNELUBA3070T/DB/6CHANNNot availableNANA
UBA3070T/N1UBA3070T/N1,118UBA3070T/N1Always Pb-free11
Quality and reliability disclaimer

Quality and reliability disclaimer

Important Legal Notice on the product/generic quality information, No Warranty

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

TypeFormatTitleDate
Data sheetpdfLED backlight driver IC (v.3.0)2010-12-09
Application notepdfBuck converter for SSL applications (v.2.0)2011-06-23
Application notepdfApplication aspects of the UBA3070 Switch-mode LED driver (v.1.0)2011-01-12
Application notepdfSMPS EMC and layout guidlines (v.1.0)2011-02-18
BrochurepdfLED Lighting Solutions Quick Start Guide With NXP Driver ICs (v.1.0)2012-01-12
LogogifGreenChip logo (v.1.0)2012-04-20
Reportpdf2293 Smart lighting backgrounder (v.1.0)2011-05-13
User manualpdfUBA3070 230 V and 120 V retrofit LED driver reference design (v.2.0)2011-01-19
User manualpdfHigh-efficiency UBA3070 4-channel DC-to-DC LED driver demo board (v.2.0)2012-05-24
User manualpdfUBA3070 demo board (v.2.0)2011-10-10
User manualpdfUBA3070 multi-channel demo board (v.2.0)2011-10-19

Ordering & availability

Type numberOrdering code(12NC)Orderable part numberRegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
UBA3070T/DB/6CHANNEL9352 913 04598UBA3070T/DB/6CHANN      not available
UBA3070T/N19352 856 92118UBA3070T/N1,118NAAVNET EXPRESS2,5005/24/2012Buy online 
   ASIAARROW ASIA PAC LTD2,5005/23/2012Buy online 
   EUARROW EUROPE2,5005/23/2012Buy online 
   NADIGI-KEY CORPORATION2,2955/24/2012Buy online 
   NAMOUSER ELECTRONICS1,7315/24/2012Buy online 
   NAMOUSER ELECTRONICS1,7315/24/2012Buy online 
   ASIAELEMENT14 APAC255/24/2012Buy online 
   JAPANCHIP ONE STOPyes05/14/2012Buy online 

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Demo boards

SSL4101DB02
SSL4101DB02

SSL4101DB02 150 W 4x 1A SSL reference design

UBA3070DB01
UBA3070DB01

UBA3070DB01 4-channel DC to DC LED driver demoboard

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