LM2796

www.ti.com

SNVS273 – MAY 2004

OPERATING RATING

(1) (2)

Input Voltage Range

2.7V to 5.5V

-30°C to +125°C

(3)

-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 guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed

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

part/package in the application (

THERMAL PROPERTIES

Juntion-to-Ambient Thermal Resistance (

(1)

100°C/W

(1)

Junction-to-ambient thermal resistance is highly dependent on application and board layout. In applications where high maximum power

dissipation exists, special care must be paid to thermal dissipation issues in board design.

ELECTRICAL CHARACTERISTICS

(1) (2)

junction temperature range (-30°C

and Group B LEDs not ON simultaneously

Symbol

Parameter

Condition

Min

Typ

Max

Units

3.0V

13.8

16.2

mA

2.5V

15

(-8%)

(+8%)

(%)

3.0V

2.5V

20

mA

3.0V

Output Current Regulation

2.5V

10

mA

2.7V

2.5V

15

mA

15

mA

Current Matching Between Any

Two Group A Outputs or Group B

(5)

1

%

Outputs

2.7V

Quiescent Supply Current

No Load Current,

3.5

6

mA

EN = ON, ENA = ENB = OFF

Shutdown Supply Current

2.7V

3

4.5

µA

2.7V

1.25

V

Output Current to Current Set

100

Ratio

(1)

All voltages are with respect to the potential at the GND pin.

(2)

Min and Max limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the

most likely norm.

(3)

voltage conditions. Refer to the "MAXIMUM OUTPUT CURRENT, MAXIMUM LED VOLTAGE, MINIMUM INPUT VOLTAGE" section.

(4)

(5)

For the two groups of outputs on a part (Group A and Group B), the following are determined: the maximum output current in the group

(MAX), the minimum output current in the group (MIN), and the average output current of the group (AVG). For each group, two

matching numbers are calculated: (MAX-AVG)/AVG and (AVG-MIN)/AVG. The largest number of the two (worst case) is considered the

matching figure for the group. The matching figure for a given part is considered to be the highest matching figure of the two groups.

The typical specification provided is the most likely norm of the matching figure for all parts.

Copyright © 2004, Texas Instruments Incorporated

Submit Documentation Feedback

3

Product Folder Links: LM2796