LT3591EDDB#TRMPBF Linear Technology, LT3591EDDB#TRMPBF Datasheet - Page 12

• Manufacturer Part Number: LT3591EDDB#TRMPBF
• Description: IC LED DRIVER WHITE BCKLGT 8-DFN
• Manufacturer: Linear Technology
• Type: Backlight, White LEDr

Specifications of LT3591EDDB#TRMPBF

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 750kHz ~ 1.2MHz
• Voltage - Supply: 2.5 V ~ 12 V
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 300mA
• Internal Switch(s): Yes
• No. Of Outputs: 1
• Output Current: 300mA
• Output Voltage: 24V
• Input Voltage: 2.5V To 12V
• Dimming Control Type: PWM / DC
• Operating Temperature Range: -40°C To +85°C
• Driver Case Style: DFN
• Rohs Compliant: Yes
• Led Driver Application: Cell Phones, PDA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Efficiency: -
• Other names: LT3591EDDB#TRMPBFTR

LT3591
TYPICAL APPLICATIONS
12
3V TO 5V
3V TO 5V
V
IN
V
IN
Li-Ion Driver for Four White LEDs at 50mA
AND DIMMING
C1:TAIYO YUDEN EMK107BJ105MA
C2: MURATA GRM31CR71H225KA88
SHUTDOWN
C1
1 F
CONTROL
10 H
C1:TAIYO YUDEN EMK107BJ105MA
C2: MURATA GRM31CR71H475KA12L
L1: MURATA LQH32CN100K53
Li-Ion Driver for Ten White LEDs
C1
1 F
L1
DIMMING CONTROL
V
SW
SHUTDOWN AND
IN
22 H
V
CTRL
L1
IN
LT3591
CTRL
GND
LT3591
GND
SW
CAP
LED
CAP
LED
D1
L1: TAIYO YUDEN NR4018T220M
D1: PHILLIPS PMEG4005AEA
R
3.92
*OPTIONAL
SENSE
R
10
SENSE
C2
4.7 F
C2
2.2 F
65
60
85
80
75
70
65
60
55
80
75
70
0
0
V
10 LEDs
V
4 LEDs
IN
IN
= 3.6V
= 3.6V
NO SCHOTTKY
10
5
EXTERNAL SCHOTTKY
LED CURRENT (mA)
LED CURRENT (mA)
Effi ciency
Effi ciency
20
10
30
15
40
3491 TA02b
3591 TA03b
50
20
3591f