LM3553 Datasheet, PDF (3/26 Pages) National Semiconductor (TI) – 1.2A Dual Flash LED Driver System with I2C Compatible

LM3553
www.ti.com
SNVS414B – FEBRUARY 2008 – REVISED MAY 2013
Operating Ratings ⁽¹⁾⁽²⁾
Input Voltage Range
2.7V to 5.5V
Junction Temperature (T_J) Range
Ambient Temperature (T_A) Range ⁽³⁾
-30°C to +125°C
-30°C to +85°C
(1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under
which operation of the device is specified. Operating Ratings do not imply performance limits. For performance limits and associated test
conditions, see the Electrical Characteristics tables.
(2) All voltages are with respect to the potential at the GND pin.
(3) In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may
have to be derated. Maximum ambient temperature (T_A-MAX) is dependent on the maximum operating junction temperature (T_J-MAX-OP =
125ºC), the maximum power dissipation of the device in the application (P_D-MAX), and the junction-to-ambient thermal resistance of the
part/package in the application (θ_JA), as given by the following equation: T_A-MAX = T_J-MAX-OP – (θ_JA × P_D-MAX).
Thermal Properties
Junction-to-Ambient Thermal Resistance (θ_JA), DQB0012A Package⁽¹⁾
36.7°C/W
(1) Junction-to-ambient thermal resistance is highly application and board-layout dependent. In applications where high maximum power
dissipation exists, special care must be paid to thermal dissipation issues in board design.
Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: LM3553
Submit Documentation Feedback
3