LTM8040V Linear Technology Corporation, LTM8040V Datasheet

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LTM8040V

Manufacturer Part Number
LTM8040V
Description
Manufacturer
Linear Technology Corporation
Datasheet

Specifications of LTM8040V

Case
LGA
Date_code
09+

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTM8040V
Manufacturer:
LT
Quantity:
218
FEATURES
APPLICATIONS
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TYPICAL APPLICATION
μModule is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
*RUNNING VOLTAGE. SEE APPLICATION INFORMATION
4V TO 36V
FOR START-UP REQUIREMENTS
True Color PWM™ Delivers Constant Color with
400:1 Dimming Ratio
Wide Input Range: 4V to 36V
Up to 1A LED Current
Adjustable Control of LED Current
High Output Current Accuracy is Maintained Over a
Wide Range from 35mA to 1A
Open LED and Short-Circuit Protection
Grounded Cathode Connection
Small Footprint, Low Profi le (15mm × 9mm × 2.82mm)
Surface Mount LGA Package
Automotive and Avionic Lighting
Architectural Detail Lighting
Display Backlighting
Constant Current Sources
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
V
IN
*
1μF
215k
650kHz
1A LED Driver μModule
V
SHDN
ADJ
PWM
RT
IN
LTM8040
GND
LPWR
LEDA
BIAS
8040 TA01
TWO WHITE LEDs
6V TO 9V
1A
DESCRIPTION
The LTM
μModule™ designed to operate as a constant current
source. Internal circuitry monitors the output current to
provide accurate current regulation, which is ideal for
driving high current LEDs. High output current accuracy
is maintained over a wide current range, from 35mA to
1A, allowing a wide dimming range over an output volt-
age range of 2.4V to 13V. Unique PWM circuitry allows a
dimming range of 400:1, avoiding the color shift normally
associated with LED current dimming.
With its wide input range of 4V to 36V, the LTM8040 regu-
lates a broad array of power sources, from 4-cell batteries
and 5V logic rails to unregulated wall transformers, lead
acid batteries and distributed power supplies.
The LTM8040 is packaged in a thermally enhanced, com-
pact (15mm × 9mm) and low profi le (2.82mm) molded
Land Grid Array (LGA) package suitable for automated
assembly by standard surface mount equipment. The
LTM8040 is Pb-free and RoHS compliant.
Electrical Specifications Subject to Change
®
8040 is a fi xed frequency 1A step-down DC/DC
100
90
80
70
60
50
40
30
20
10
36V, 1A µModule LED
0
0
V
3.3V AT 1A LEDs
IN
= 12V
200
OUTPUT CURRENT (mA)
Effi ciency
400
600
800
8040 TA01b
LTM8040
1000
Driver
1
8040p

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