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LT3496 Datasheet(PDF) 3 Page - Linear Technology

Part # LT3496
Description  Triple Output LED Driver
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3496 Datasheet(HTML) 3 Page - Linear Technology

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LT3496
3
3496fe
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VSHDN = 5V, CAP1-3 = 5V, PWM1-3 = 5V, FADJ = 0.5V,
CTRL1-3 = 1.5V, OVP1-3 = 0V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Operation Voltage
(Note 4)
3
30
V
VIN Undervoltage Lockout
2.1
2.4
V
Full-Scale LED Current Sense Voltage
CAP1-3 = 24V
l
98
97
100
103
104
mV
mV
One-Tenth Scale LED Current Sense Voltage
CTRL1-3 = 100mV, CAP1-3 = 24V
l
7.5
10
12.5
mV
CAPn/LEDn Operating Voltage
2.5
45
V
VREF Output Voltage
IREF = 200μA, Current Out of Pin
l
1.96
2
2.04
V
VREF Line Regulation
3V ≤ VIN ≤ 40V, IREF = 10μA
0.03
%/V
Quiescent Current in Shutdown
SHDN = 0V
0.1
10
μA
Quiescent Current Idle
PWM1-PWM3 = 0V
6
7.5
mA
Quiescent Current Active (Not Switching)
VC1-VC3 = 0V
11
14
mA
Switching Frequency
FADJ = 1.5V
FADJ = 0.5V
FADJ = 0.1V
1900
2100
1300
330
2300
kHz
kHz
kHz
Maximum Duty Cycle
FADJ = 1.5V (2.1MHz)
FADJ = 0.5V (1.3MHz)
FADJ = 0.1V (330kHz)
l
70
78
87
97
%
%
%
CTRL1-3 Input Bias Current
Current Out of Pin, CTRL1-3 = 0.1V
20
100
nA
FADJ Input Bias Current
Current Out of Pin, FADJ = 0.1V
20
100
nA
OVP1-3 Input Bias Current
Current Out of Pin, OVP1-3 = 0.1V
10
100
nA
OVP1-3 Threshold
0.95
1
1.05
V
VC1-3 Idle Input Bias Current
PWM1-3 = 0V
–20
0
20
nA
VC1-3 Output Impedance
CAP1-3 = 24V
4.5
MΩ
EAMP gm (ΔIVC/ΔVCAP-LED)
CAP1-3 = 24V
200
μS
SW1-3 Current Limit
(Note 3)
750
1000
1250
mA
SW1-3 VCESAT
ISW = 500mA (Note 3)
260
mV
SW1-3 Leakage Current
SHDN = 0V, SW = 5V
2
μA
CAP1-3 Input Bias Current
180
250
μA
CAP1-3, LED1-3 Idle Input Bias Current
PWM1-3 = 0V
1
μA
CAP1-3, LED1-3 Input Bias Current in Shutdown
SHDN = 0V
1
μA



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