LT3590ESC8#TRMPBF Linear Technology, LT3590ESC8#TRMPBF Datasheet - Page 12

• Manufacturer Part Number: LT3590ESC8#TRMPBF
• Description: IC LED DRVR WHITE BCKLGT SC-70-8
• Manufacturer: Linear Technology
• Type: Backlight, White LEDr

Specifications of LT3590ESC8#TRMPBF

• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 650kHz ~ 1.05MHz
• Voltage - Supply: 4.5 V ~ 55 V
• Voltage - Output: 55V
• Mounting Type: Surface Mount
• Package / Case: SC-70-8
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 50mA
• Internal Switch(s): Yes
• Efficiency: 91%
• No. Of Outputs: 1
• Output Current: 50mA
• Output Voltage: 55V
• Dimming Control Type: PWM / DC
• Operating Temperature Range: -40°C To +85°C
• Driver Case Style: SC-70
• Switching Frequency: 850kHz
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LT3590ESC8#TRMPBF; LT3590ESC8#TRMPBFTR

LT3590
TYPICAL APPLICATIONS
CONTROL
L1: MURATA LQH32CN221K03
12
CONTROL
L1: MURATA LQH32CN-221
>1.5V
CONTROL
L1: MURATA LQH32CN-391
48V
>1.5V
V
IN
24V
V
>1.5V
IN
48V
V
IN
24V Supply for a 5 LED String, 30mA Current
48V Supply for 5 LED String, 30mA Current
C1
1μF
C3
0.1μF
C1
1μF
C3
0.1μF
48V Supply for 6 LED String, 50mA Current
C1
1μF
C3
0.1μF
V
CTRL
VREG
IN
V
CTRL
VREG
IN
V
CTRL
VREG
LT3590
IN
GND
4Ω
R1
LT3590
6.8Ω
GND
R1
LT3590
6.8Ω
GND
R1
LED
SW
LED
SW
1μF
C2
LED
SW
1μF
C2
1μF
C2
LEDs
6
30mA
30mA
470μH
50mA
3590 TA03a
L1
220μH
3590 TA04a
L1
470μH
3590 TA02a
L1
100
100
100
80
90
80
70
60
50
40
90
80
70
60
50
40
90
70
60
50
40
0
0
0
Conversion Effi ciency
5
5
Conversion Effi ciency
Conversion Effi ciency
10
LED CURRENT (mA)
LED CURRENT (mA)
LED CURRENT (mA)
10
10
20
15
15
30
20
20
40
25
25
3590 TA02b
3590 TA03b
3590 TA04b
30
30
50
3590f