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LT3756IUD-1-TRPBF Datasheet(PDF) 3 Page - Linear Technology

Part # LT3756IUD-1-TRPBF
Description  100VIN, 100VOUT LED Controller
Download  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3756IUD-1-TRPBF Datasheet(HTML) 3 Page - Linear Technology

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LT3756/LT3756-1
3
37561f
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at TA = 25°C. VIN = 24V, SHDN/UVLO = 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Minimum Operating Voltage
VIN Tied to INTVCC
6V
VIN Shutdown IQ
SHDN/UVLO = 0V, PWM = 0V
SHDN/UVLO = 1.15V, PWM = 0V
0.1
1
5
μA
μA
VIN Operating IQ (Not Switching)
VC = 0V, RT = 100k to GND
1.4
1.7
mA
VREF Voltage
100μA ≤ IVREF ≤ 0μA
l
1.965
2.00
2.045
V
VREF Line Regulation
6V ≤ VIN ≤ 100V
0.006
%/V
SENSE Current Limit Threshold
98
108
118
mV
SENSE Input Bias Current
Current Out of Pin
40
μA
SS Pull-Up Current
Current Out of Pin
8
10.5
13
μA
Error Amplifier
LED Current Sense Threshold (VISP – VISN)
FB = 0V, VISP = 48V
l
96
100
103
mV
LED Current Sense Threshold at CTRL = 0V (VISP – VISN) CTRL = 0V, FB = 0V, VISP = 48V
–13
–10
–8
mV
CTRL Threshold Linear Programming Range
0
1.1
V
CTRL Input Bias Current
Current Out of Pin
50
100
nA
LED Current Sense Amplifier Input Common Mode
Range (VISP)
2.9
100
V
ISP/ISN Short-Circuit Threshold (VISP – VISN)VISN = 0V
115
150
200
mV
ISP/ISN Short-Circuit Fault Sensing Common Mode
Range (VISN)
03
V
ISP/ISN Input Bias Current
PWM = 5V (Active), VISP = 48V
PWM = 0V (Standby), VISP = 48V
50
0
0.1
μA
μA
LED Current Sense Amplifier gm
VISP – VISN = 100mV
120
μS
VC Output Impedance
1V < VVC < 2V
15000
VC Standby Input Bias Current
PWM = 0V
–20
20
nA
FB Regulation Voltage (VFB)
VISP = VISN
l
1.220
1.232
1.250
1.250
1.270
1.265
V
V
FB Amplifier gm
FB = VFB, VISP = VISN
480
μS
FB Pin Input Bias Current
Current Out of Pin
40
100
nA
FB Open LED Threshold
OPENLED Falling (LT3756 Only)
VFB
60mV
VFB
50mV
VFB
40mV
V
FB Overvoltage Threshold
PWMOUT Falling
VFB +
50mV
VFB +
60mV
VFB +
70mV
V
VC Current Mode Gain –
ΔVVC/ΔVSENSE
4V/V
Oscillator
Switching Frequency
RT = 100k
RT = 10k
l
90
925
105
1000
125
1050
kHz
kHz
Minimum Off-Time
170
ns
Linear Regulator
INTVCC Regulation Voltage
7
7.15
7.3
V
Dropout (VIN – INTVCC)IINTVCC = –10mA, VIN = 7V
1
V
INTVCC Undervoltage Lockout
3.9
4.1
4.3
V
INTVCC Current Limit
14
18
23
mA
INTVCC Current in Shutdown
SHDN/UVLO = 0V, INTVCC = 7V
8
12
μA


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