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LT3003EMSE#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LT3003
1
3003fa
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
LED1
8 × 3 = 24 LEDs
350mA PER STRING
V
MAX
SHDN
V
IN
PWM
LED2
LT3003
LED3
0.1Ω
V
EE
GND OT2OT1
CAP
10µH
1nF
10µF
0.33µF
LED
V
IN
V
IN
3V TO 16V
V
C
3003 TA01a
1µF
1µF
PV
IN
32V
GND
SIMPLIFIED LT3476
SW
PWM
PWM
DIMMING
TOTAL LED CURRENT (mA)
0
60
EFFICIENCY (%)
65
70
75
80
90
200
400 600 800
3003 TA01b
1000 1200
85
PV
IN
= 32V
NUMBER OF LEDS = 8 × 3 = 24
3-Channel LED
Ballaster with PWM
The LT
®
3003 drives three separate strings of LEDs up
to 350mA/channel with 3% accurate current matching,
resulting in uniform LED brightness and intensity. This
approach is superior to conventional methods of running
three separate channels with external ballast resistors
requiring expensive factory calibration.
The LT3003 operates in boost, buck and buck-boost mode.
A True Color PWM Dimming ratio of up to 3000:1 is achiev-
able using a logic-level signal at the PWM pin for all modes
without the need for external level-shifting circuitry. For
applications with input supply above and below the output
voltage of the LED strings, the LT3003 allows the LEDs to
be returned to the input supply (buck-boost mode) instead
of being limited to only SEPIC solutions.
The LT3003 is ideal for high power LED driver applications
such as TFT LCD backlighting and heads-up displays. Ad-
ditional overtemperature outputs allow appropriate system
management for increased reliability.
The LT3003 is available in a small 10-pin MSE package.
■
High Power LED Ballaster
■
Automotive Lighting
■
Video Cameras
■
TFT LCD Backlighting
■
3% LED Current Matching
■
Up to 350mA Continuous Current per LED String
■
Up to 3000:1 True Color PWM
TM
Dimming Range
■
PWM Input Disconnects LED Strings
■
Can Operate in Buck, Boost and Buck-Boost Modes
■
Wide Input Range: 3V to 40V
■
Overtemperature Outputs
■
Works with LT1618, LT3477, LT3474, LT3475,
LT3476, LTC
®
3783
■
Thermally Enhanced 10-Pin MSOP Package
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
True Color PWM is a trademark of Linear Technolology Corporation.
All other trademarks are the property of their respective owners.
Buck Mode LT3003 with the LT3476
Effi ciency
LT3003
2
3003fa
ELECTRICAL CHARACTERISTICS
PACKAGE/ORDER INFORMATIONABSOLUTE MAXIMUM RATINGS
V
IN
............................................................................40V
LED1, LED2, LED3 ....................................................48V
V
MAX
, SHDN ..............................................................48V
V
IN
– V
EE
...................................................................36V
V
EE
............................................................................36V
PWM .........................................................................15V
OT1, OT2 .....................................................................6V
Operating Junction Temperature Range
(Notes 2, 3, 4) ........................................ –40°C to 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1)
The
● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. PWM = 1V, V
MAX
= 4V, V
IN
= 3V, V
EE
= 0V, I
LED2
= 100mA,
OT1 = OT2 = Open, SHDN = V
IN
.
PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operational Input Voltage V
EE
= 0V, I
LED1,2,3
= 100mA
V
EE
= 4V, I
LED1,2,3
= 100mA
●
336
40
V
V
Minimum (V
IN
– V
EE
)V
EE
= 0V to 36V 2.7 3 V
V
IN
Quiescent Current PWM = 1V, I
LED1,2,3
= 100mA
PWM = 0V, V
LED1
= V
LED2
= V
LED3
10.5
470 600
mA
µA
V
IN
Shutdown Current SHDN = 0V, I
LED1,2,3
= 0mA 2 4 10 µA
V
MAX
Quiescent Current PWM = 1V, I
LED2
= 100mA
PWM = 0V, V
LED1
= V
LED2
= V
LED3
55
20
90
300
µA
nA
SHDN Pin Threshold I
LED2
= 100mA, V
LED1
= V
LED2
= V
LED3
●
0.25 0.7 1 V
LED Current Matching I
LED2
= 350mA, V
LED1
= V
LED2
= V
LED3
–3 0 +3 %
|LED2 – LED1|, |LED2 – LED3| LED Current
Matching with LED Pin Voltage Mismatch
I
LED2
= 350mA,
(|V
LED2
– V
LED1
| + |V
LED2
– V
LED3
|) = 700mV
–3.5 0.5 +3.5 %
LED Pin Voltage I
LED2
= 100mA 0.7 0.8 0.9 V
LED1, LED2, LED3 Maximum Current V
LED1,2,3
< 1.5V 375 500 550 mA
LED1, LED2, LED3 Maximum Leakage Current PWM = 0V, V
LED1,2,3
= 48V 0.1 1 µA
PWM Switching Threshold I
LED1,2,3
= 100mA
●
0.3 0.5 0.7 V
Turn-On Delay (PWM On to I
LED
On) PWM = 0V to 1V, I
LED
> 50mA 2 µs
V
EE
Pin Current in Buck Mode PWM = 0V, V
MAX
= 40V, V
IN
= 39V, V
EE
= 36V 0.1 1 µA
Overtemperature Sense Point (OT1, OT2) (Note 4) 125 °C
Overtemperature Hysteresis Point (Note 5) –6° from Overtemp
Sense Point
°C
OT1 Pull-Down Current OT1 = 0.3V (Note 4) 100 µA
1
2
3
4
5
LED1
LED2
LED3
V
MAX
V
IN
10
9
8
7
6
V
EE
SHDN
OT2
OT1
PWM
TOP VIEW
11
MSE PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 125°C, θ
JA
= 35°C/W
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER MSE PART MARKING
LT3003EMSE LTCFF
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges.
LT3003
3
3003fa
TYPICAL PERFORMANCE CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
OT2 Pull-Down Current OT2 = 0.3V (Note 4) 300 µA
OT1, OT2 Leakage Current OT1 = OT2 = 5V 1 µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3003E is guaranteed to meet performance specifi cations
from 0°C to 85°C junction temperature. Specifi cations over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls.
Note 3: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specifi ed maximum operating junction
temperature may impair device reliability.
Note 4: Correlation to static test at T
A
= 25°C.
Note 5: Guaranteed by design.
I
LED1,3
to I
LED2
Matching
I
LED
(mA)
50
35
30
25
20
15
10
5
0
200 300
3003 G02
100 150
250 350
INPUT QUIESCENT CURRENT (mA)
T
J
= 27°C
JUNCTION TEMPERATURE (°C)
–50
0
V
EE
PIN CURRENT • –1 (nA)
50
150
200
250
500
350
0
50
75
3003 G03
100
400
450
300
–25
25
100
125
10µs AFTER PWM = 0
V
IN
Quiescent Current vs I
LED
V
EE
Pin Current (Out of the Pin)
vs Temperature
V
MAX
Pin Current vs Temperature
V
IN
Shutdown Current
vs Temperature (V
LED1,2,3
– V
EE
) vs I
LED
JUNCTION TEMPERATURE (°C)
–50
0
V
MAX
PIN CURRENT (nA)
1
3
4
5
10
7
0
50
75
3003 G04
2
8
9
6
–25
25
100
125
10µs AFTER PWM = 0
JUNCTION TEMPERATURE (°C)
–50
4
5
7
25 75
3003 G05
3
2
–25 0
50 100 125
1
0
6
V
IN
SHUTDOWN CURRENT (µA)
SHDN = 0
JUNCTION TEMPERATURE (°C)
–50
I
LED1,3
vs I
LED2
(%)
25
3003 G01
2.0
1.0
–25 0 50
0.5
0
3.0
2.5
1.5
75 100 125
I
LED1,3
– I
LED2
I
LED2
I
LED2
= 350mA
V
LED1
= V
LED2
= V
LED3
I
LED
(mA)
(V
LED1,2,3
– V
EE
) (mV)
1000
1050
1100
300
3003 G06
950
900
100 200
50 350
150 250 400
850
800
1150
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. PWM = 1V, V
MAX
= 4V, V
IN
= 3V, V
EE
= 0V, I
LED2
= 100mA,
OT1 = OT2 = Open, SHDN = V
IN
.
T
A
= 25°C unless otherwise noted.
ELECTRICAL CHARACTERISTICS
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT3003EMSE#TRPBF

Mfr. #:
Buy LT3003EMSE#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
LED Lighting Drivers Three Channel LED Ballaster w/ PWM Dimming
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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