UBA3070 NXP Semiconductors, UBA3070 Datasheet
UBA3070
Available stocks
Related parts for UBA3070
UBA3070 Summary of contents
Page 1
... UBA3070 LED backlight driver IC Rev. 02 — 2 December 2008 1. General description 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. ...
Page 2
... VALLEY LOGIC 100 mV LOGIC S Q UVLO < 4 Short winding Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC Version SOT96-1 clamp I prot(mask) MASK PROTECTION DRIVER I startup(soft) LEB soft start 0.5 V Blank S2 0.5 V 0.88 V 014aaa257 © NXP B.V. 2008. All rights reserved. ...
Page 3
... GND 2 UBA3070 3 PWM 4 MASK Pin description Pin SO8 1 supply voltage 2 ground 3 PWM input voltage 4 masking input voltage 5 resistor programmable current sense input Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC DRAIN 8 HVS 7 GATE 6 RSENSE 5 014aaa092 8 DRAIN 7 HVS 6 GATE 5 RSENSE 014aaa094 Description © ...
Page 4
... BLU designs ranging from high-power to low-power LEDs, and high-voltage to low-voltage LED strings. Consequently it provides a driver solution for all LCD screen sizes and types of LEDs. By combining the UBA3070 with the appropriate power devices, the amount of drivers can be minimized by optimizing the amount of LEDs put in series ...
Page 5
... R ss UBA3070_2 Product data sheet (about 0.5 V maximum SENSE – sense max ch ss ------------------------------------------------------------- R sense C ss Rev. 02 — 2 December 2008 LED backlight driver internal current source charges the sense and UBA3070 © NXP B.V. 2008. All rights reserved ...
Page 6
... I switched off, see Fig 4. 7.8 Overtemperature protection An accurate temperature protection is provided in the UBA3070. When the junction temperature exceeds the thermal shutdown temperature of typically 140 C the converter will stop switching. 7.9 Driver The driver circuit to the gate of the power FET has a current sourcing capability of 135 mA typical and a current sinking capability of 560 mA typical. This permits fast turn-on and turn-off of the FET for effi ...
Page 7
... DRAIN and V HBM class 1 pins DRAIN and V HBM class 1 any pin; MM Thermal characteristics Parameter thermal resistance from junction to ambient Conditions ) CC(startup) CC(UVLO) Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC [1] Min Max 250 1 0.8 - < [ [2] ...
Page 8
... V = 1.5 V PWM 0 0 0.5 V sense DRIVER DRIVER 9.5 V DRIVER V > Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC Min Typ Max Unit 1.1 1.3 1 600 - 0. 100 150 mV 0.5 0.25 0.05 V 0.5 0.7 0 ...
Page 9
... Guaranteed by design. [2] When the voltage at pin PWM is between 0.5 V and 2.0 V the peak current and the frequency will be reduced. UBA3070_2 Product data sheet Conditions Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC Min Typ Max Unit 130 140 150 C - ...
Page 10
... LED backlight driver detail 6.2 1.0 0.7 1.05 0.25 0.25 5.8 0.4 0.6 0.039 0.028 0.041 0.01 0.01 0.016 0.024 EUROPEAN PROJECTION UBA3070 SOT96 ( 0.7 0 0.028 0.004 0.012 ISSUE DATE 99-12-27 03-02-18 © NXP B.V. 2008. All rights reserved ...
Page 11
... The minimum value for junction temperature has been updated in UBA3070_1 20080605 UBA3070_2 Product data sheet Data sheet status Change notice Product data sheet - Product data sheet - Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC Supersedes UBA3070_1 Table 3. - © NXP B.V. 2008. All rights reserved ...
Page 12
... Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. http://www.nxp.com salesaddresses@nxp.com Rev. 02 — 2 December 2008 UBA3070 LED backlight driver IC © NXP B.V. 2008. All rights reserved ...
Page 13
... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © NXP B.V. 2008. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com UBA3070 All rights reserved. Date of release: 2 December 2008 Document identifier: UBA3070_2 ...