LT3498EDDB#TRMPBF Linear Technology, LT3498EDDB#TRMPBF Datasheet - Page 20

• Manufacturer Part Number: LT3498EDDB#TRMPBF
• Description: IC LED DRVR WT/OLED BCKLGT 12DFN
• Manufacturer: Linear Technology
• Type: Backlight, OLED, White LEDr

Specifications of LT3498EDDB#TRMPBF

• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: OLED, White LED
• Frequency: 1.8MHz ~ 2.8MHz
• Voltage - Supply: 2.5 V ~ 12 V
• Voltage - Output: 32V
• Mounting Type: Surface Mount
• Package / Case: 12-DFN
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 20mA
• Internal Switch(s): Yes
• No. Of Outputs: 2
• Output Current: 200mA
• Output Voltage: 32V
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Efficiency: -
• Other names: LT3498EDDB#TRMPBFTR

LT3498
TYPICAL APPLICATIONS
20
C
C1: TAIYO YUDEN GMK212BJ105KG
C3: TAIYO YUDEN TMK316BJ106ML
L1: MURATA LQH32CN150K53
L2: MURATA LQH32CN100K53
IN
, C2: X5R OR X7R WITH SUFFICIENT VOLTAGE RATING
C1
1μF
R
10Ω
SENSE1
20mA
Li-Ion to Three White LEDs and OLED/LCD Bias
80
75
70
60
50
45
65
55
CAP1
LED1
0
V
SHUTDOWN
SW1
IN
DIMMING
CONTROL
OFF
CTRL1
= 3V TO 5V
AND
15μH
ON
5
V
L1
IN
LED CURRENT (mA)
LED Effi ciency
= 3.6V, 3 LEDs
GND1
V
3498 TA04
IN
10
LT3498
10μH
GND2
L2
C
4.7μF
IN
SW2
SHUTDOWN
CONTROL
OFF
15
CTRL2
AND
ON
3498 TA04b
CAP2
20
V
FB2
OUT2
C2
0.47μF
R
2.21MΩ
FB2
C3
10μF
16V
24mA
3498fa