LT3496EFE-TRPBF(RevE) Ver la hoja de datos (PDF) - Linear Technology
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LT3496EFE-TRPBF Datasheet PDF : 20 Pages
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LT3496
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
VIN Operation Voltage
VIN Undervoltage Lockout
Full-Scale LED Current Sense Voltage
CONDITIONS
(Note 4)
CAP1-3 = 24V
One-Tenth Scale LED Current Sense Voltage
CAPn/LEDn Operating Voltage
VREF Output Voltage
VREF Line Regulation
Quiescent Current in Shutdown
Quiescent Current Idle
Quiescent Current Active (Not Switching)
Switching Frequency
Maximum Duty Cycle
CTRL1-3 Input Bias Current
FADJ Input Bias Current
OVP1-3 Input Bias Current
OVP1-3 Threshold
VC1-3 Idle Input Bias Current
VC1-3 Output Impedance
EAMP gm (ΔIVC/ΔVCAP-LED)
SW1-3 Current Limit
SW1-3 VCESAT
SW1-3 Leakage Current
CAP1-3 Input Bias Current
CAP1-3, LED1-3 Idle Input Bias Current
CAP1-3, LED1-3 Input Bias Current in Shutdown
CTRL1-3 = 100mV, CAP1-3 = 24V
IREF = 200μA, Current Out of Pin
3V ≤ VIN ≤ 40V, IREF = 10μA
SHDN = 0V
PWM1-PWM3 = 0V
VC1-VC3 = 0V
FADJ = 1.5V
FADJ = 0.5V
FADJ = 0.1V
FADJ = 1.5V (2.1MHz)
FADJ = 0.5V (1.3MHz)
FADJ = 0.1V (330kHz)
Current Out of Pin, CTRL1-3 = 0.1V
Current Out of Pin, FADJ = 0.1V
Current Out of Pin, OVP1-3 = 0.1V
PWM1-3 = 0V
CAP1-3 = 24V
CAP1-3 = 24V
(Note 3)
ISW = 500mA (Note 3)
SHDN = 0V, SW = 5V
PWM1-3 = 0V
SHDN = 0V
MIN TYP MAX UNITS
3
30
V
2.1
2.4
V
98
100
103
mV
l 97
104
mV
l 7.5
10
12.5
mV
2.5
45
V
l 1.96
2
2.04
V
0.03
%/V
0.1
10
μA
6
7.5
mA
11
14
mA
1900 2100 2300
kHz
1300
kHz
330
kHz
l 70
78
%
87
%
97
%
20
100
nA
20
100
nA
10
100
nA
0.95
1
1.05
V
–20
0
20
nA
4.5
MΩ
200
μS
750 1000 1250
mA
260
mV
2
μA
180
250
μA
1
μA
1
μA
3496fe
3
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