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LT3596 Datasheet(PDF) 3 Page - Linear Technology

Part # LT3596
Description  60V Step-Down LED Driver
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3596 Datasheet(HTML) 3 Page - Linear Technology

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LT3596

3596f
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 24V, BOOST = 30V, BIAS = 5V, EN/UVLO = 5V, PWM1-3 = 3.3V,
CTRL1-3 = CTRLM = TSET = 2V, VOUT = 24V, SYNC = 0V unless otherwise specified. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Operating Voltage
l
6
55
V
Quiescent Current from VIN
EN/UVLO = 0.4V
BIAS = 5V, Not Switching
BIAS = 0V, Not Switching
1.3
3
2
4
5
µA
mA
mA
Minimum BIAS Voltage
3
3.1
V
Quiescent Current from BIAS
EN/UVLO = 0.4V
BIAS = 5V, Not Switching
BIAS = 0V, Not Switching, Current Out of Pin
1.4
70
2
3
150
µA
mA
µA
EN Threshold
0.4
0.7
V
UVLO Threshold (Falling)
1.47
1.51
1.53
V
EN/UVLO Pin Current (Hysteresis)
EN/UVLO = 1.6V
EN/UVLO = 1.4V
4.25
10
5.1
5.75
nA
µA
FB Regulation Voltage
1.15
1.21
1.25
V
FB Pin Bias Current
FB = 6V
200
nA
Maximum Duty Cycle
RT = 220k (200kHz)
RT = 33.2k (1MHz)
90
80
99
90
%
%
Switch Saturation Voltage
ISW = 300mA
330
mV
Switch Current Limit
0.8
1.0
1.25
A
DA Pin Current to Stop OSC
500
650
750
mA
Switch Leakage
VSW = 0V
700
nA
BOOST Pin Current
ISW = 100mA
3
mA
Switching Frequency
RT = 220k
RT = 33.2k
170
900
200
1000
230
1100
kHz
kHz
SYNC Input Low
0.4
V
SYNC Input High
1.6
V
SYNC Frequency Range
RT = 220k
RT = 47k
240
1000
kHz
kHz
SYNC Pin Bias Current
VSYNC = 3.3V
200
nA
Soft-Start Time
(Note 4)
2.2
ms
VREF Voltage
IVREF = 0µA
l
1.96
2.0
2.04
V
Maximum VREF Current
200
µA
ISET1-3 Pin Voltage
RISET1-3 = 20k
1.0
V
TSET Voltage for LED Current Derating
540
mV
TSET Pin Leakage Current
VTSET = 1V
200
nA
ILED1-3 LED Current
RISET1-3 = 20k
l
98
97
100
100
102
103
mA
mA
LED String Current Matching
RISET1-3 = 20k
l
±0.35
±0.35
±1.5
±2
%
%
LED Pin Voltage
Adaptive VOUT Loop Enabled
1.07
V
LED1-3 Open Detection Threshold
0.29
V
LED1-3 Short Protection Threshold (from GND)
10
15
V
LED1-3 Short Protection Threshold (from VOUT)
VOUT = 6V, VOUT > VLED1-3
1
1.2
1.6
V
LED1-3 Pin Leakage Current
VLED1-3 = 42V, PWM1-3 = 0V
200
nA



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