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LT3592IDDB#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
LT3592
4
3592fc
TYPICAL PERFORMANCE CHARACTERISTICS
Effi ciency (2 Red LEDS,
L = 10μH, 900kHz)
Effi ciency (1 Red LED,
L = 6.8μH, 900kHz)
Effi ciency (2 Red LEDs,
L = 22μH, 400kHz)
Minimum V
IN
for 500mA Output
Current vs V
OUT
, L = 22μH,
f = 400kHz (LED Loads)
Minimum V
IN
for 500mA Output
Current vs V
OUT
, L = 6.8μH,
f = 900kHz (LED Loads)
Switch Voltage Drop
vs Switch Current
Switch Voltage Drop at 500mA
vs Temperature
(T
A
= 25°C, unless otherwise noted)
INPUT VOLTAGE (V)
4
EFFICIENCY (%)
100
95
90
60
50
75
70
65
80
85
55
45
40
2012 24
3592 G01
28168
BRIGHT (500mA)
INPUT VOLTAGE (V)
4
EFFICIENCY (%)
100
95
90
60
50
75
70
65
80
85
55
45
40
2012 24
3592 G02
28168
BRIGHT (500mA)
INPUT VOLTAGE (V)
4
EFFICIENCY (%)
100
95
90
60
75
70
65
80
85
55
50
2012 24
3592 G03
28168
BRIGHT (500mA)
INPUT VOLTAGE (V)
2
OUTPUT VOLTAGE (V)
12
11
10
4
7
6
5
8
9
3
2
8
3592 G05
121046
INPUT VOLTAGE (V)
2
OUTPUT VOLTAGE (V)
12
11
10
4
7
6
5
8
9
3
2
8
3592 G06
121046
SWITCH CURRENT (mA)
0
V
IN
– V
SW
(mV)
500
450
400
100
250
200
150
300
350
50
0
600
3592 G08
800700100 200 300 400 500
TEMPERATURE (°C)
–50
V
IN
– V
SW
(mV)
400
375
300
350
325
275
250
100
3592 G09
150050
Effi ciency (2 Red LEDs,
L = 4.7μH, 2.2MHz)
Minimum V
IN
for 500mA Output
Current vs V
OUT
, L = 4.7μH,
f = 2.2MHz (LED Loads)
INPUT VOLTAGE (V)
4
EFFICIENCY (%)
100
95
90
60
75
70
65
80
85
55
50
2012 24
3592 G04
28168
BRIGHT (500mA)
INPUT VOLTAGE (V)
2
OUTPUT VOLTAGE (V)
12
11
10
4
7
6
5
8
9
3
2
8
3592 G07
1610 12 1446
LT3592
5
3592fc
Undervoltage Lockout
vs Temperature
Switching Frequency
vs Temperature
TYPICAL PERFORMANCE CHARACTERISTICS
Current Limit During Soft Start
Frequency Foldback
Switch Current Limit
Switch Current Limit
Operating Waveforms
Operating Waveforms,
Discontinuous Mode
(T
A
= 25°C, unless otherwise noted)
TEMPERATURE (°C)
–50
UNDERVOLTAGE LOCKOUT (V)
3.4
3.3
3.2
3.1
100
3592 G10
150050
TEMPERATURE (°C)
–50
f
SW
(kHz)
2300
1700
1900
2100
1500
1300
1100
900
700
500
300
110
3592 G11
130–30 –10 9070503010
R
T
= 357k
R
T
= 140k
R
T
= 48.7k
V
SHDN
(V)
0.5
SWITCH CURRENT LIMIT (mA)
1400
1200
1000
800
600
400
200
0
2
3592 G12
2.51.51
SHDN VOLTAGE (mV)
600
FREQUENCY (kHz)
2500
2000
1500
1000
500
0
2000
3592 G13
22001000 1200 1400 1600 1800800
R
T
= 48.7k
DUTY CYCLE (%)
0
SWITCH CURRENT LIMIT (A)
1.4
1.3
1.2
1.1
0.8
0.9
1
0.7
0.6
0.5
80
3592 G14
10040 6020
TEMPERATURE (°C)
–50
SWITCH CURRENT LIMIT (A)
1.50
1.40
1.45
1.35
1.30
1.15
1.20
1.25
1.10
1.05
1.00
90 110
3592 G15
1303010 7050–30 –10
TYPICAL
V
SW
5V/DIV
V
CAP
10mV/DIV
AC-COUPLED
I
L
500mA/DIV
3592 G16
500ns/DIV
V
SW
5V/DIV
V
CAP
10mV/DIV
AC-COUPLED
I
L
500mA/DIV
3592 G17
500ns/DIV
LT3592
6
3592fc
TYPICAL PERFORMANCE CHARACTERISTICS
Switching Frequency vs R
T
V
BRIGHT
vs V
OUT
V
DIM
vs V
OUT
Boost Diode Voltage vs Current
V
OUT
(V)
0
V
CAP
– V
OUT
(mV)
210
205
200
195
190
810
3592 G18
12462
V
BRIGHT
(mV)
V
OUT
(V)
0
V
CAP
– V
OUT
(mV)
25
24
23
17
18
19
20
21
22
16
15
810
3592 G19
12462
V
DIM
(mV)
DIODE CURRENT (mA)
0
DIODE FORWARD VOLTAGE (V)
1.0
0.9
0.6
0.7
0.8
0.5
0.4
100 150
3592 G20
20050
V
BSTDIO
R
T
(kΩ)
30
FREQUENCY (kHz)
3000
2500
1000
1500
2000
500
0
300 330
3592 G21
36060 90 120 150 180 210 240 270
(T
A
= 25°C, unless otherwise noted)
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LT3592IDDB#TRMPBF

Mfr. #:
Buy LT3592IDDB#TRMPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
LED Lighting Drivers 500mA Wide Input Voltage Range Step-Down LED Driver with 10:1 Dimming
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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