LTC3524_15 Datasheet, PDF (16/16 Pages) Linear Technology – Adjustable TFT Bias Supply with WLED Driver

LTC3524
TYPICAL APPLICATION
3NiMH or NiCD to +3.3V, 25mA, +10V, 1mA, –5V, 1mA TFT LCD Power Supply + 6 White LEDs
COILCRAFT
MSS4020 SERIES
+
3 NiMH
OR NiCD
–
10μH
2.2μF
4.7μH
SW1
V_IN
SW2
VLED
+3.3V, 25mA
10μF _301k
V_OUT
510k
FBVO
LED2
LED1
+6.6V
V2x
0.47μF
C2⁺
0.1μF
C2^–
+10V, 1mA
VH
0.47μF _165k
2M
FBH
CH⁺
LTC3524
PROG
ELED2
ELED1
ELCD
VNIN
FBN
VN
CH^– GND CN⁺
0.1μF
0.1μF
10μF
100k FOR 20mA
232k
604k
0.47μF
– 5V, 1mA
V_IN
V2x
V_OUT
PHILIPS
PMEG3005
100
90
3.1V
LCD (V_IN)
80 ^2.5V
3.1V
70
LED (V_IN) ^2.5V
3.6V _3.6V ^{LCD (VIN)}
60
50
5
10
15
20
25
V_OUT OR LED STRING CURRENT (mA)
3524 TA03b
3524 TA03a
RELATED PARTS
PART NUMBER
LT1942
LT1947
DESCRIPTION
Quad DC/DC Converter for Triple Output TFT Supply Plus
LED Driver
3MHz, 30V Adjustable Output TFT-LCD
LTC3450
Triple Switching Regulator
LT3465/LT3465A Constant-Current, 1.2MHz/2.7MHz High Efficiency White
LED Boost Regulator with Integrated Schottky Diode
LT3466/LT3466-1 Dual Constant-Current, 2MHz, High Efficiency White LED
Boost Regulator with Integrated Schottky Diode
LT3471
Dual Output, Boost/Inverter, 1.3A I_SW, 1.2MHZ, High
Efficiency Boost-Inverting DC/DC Converter
LT3491
Constant-Current, 2.3MHz, High Efficiency White LED Boost
Regulator with Integrated Schottky Diode
LT3494/LT3494A 40V, 180mA/350mA Micropower Low Noise Boost Converter
with Output Disconnect
LT3497
Constant-Current, 2.3MHz, Dual High Efficiency White LED
Boost Regulator with Integrated Schottky Diode for 12 LEDs
LT3591
Constant-Current, 1MHz, High Efficiency White LED Boost
Regulator with Integrated Schottky Diode
ThinSOT is a trademark of Linear Technology Corporation.
COMMENTS
V_IN: 2.6V to 16V, V_OUT(MAX) = 36V, I_Q = 7mA, I_SD = < 1μA,
4mm × 4mm QFN-24 Package
V_IN: 2.7V to 8V, V_OUT(MAX) = 30V, I_Q = 9.5mA, I_SD = < 1μA,
MSOP-10 Package
V_IN: 1.5V to 4.6V, V_OUT(MAX) = 15V, I_Q = 75μA, I_SD = < 1μA,
3mm × 3mm QFN-16 Package
V_IN: 2.7V to 16V, V_OUT(MAX) = 34V, I_Q = 1.9mA, I_SD = < 1μA,
ThinSOT^TM Package
V_IN: 2.7V to 24V, V_OUT(MAX) = 40V, I_Q = 5mA, I_SD = < 16μA,
3mm × 3mm DFN-10 Package
V_IN: 2.4V to 16V, V_OUT(MAX) = ±40V, I_Q = 2.5mA, I_SD = < 1μA,
3mm × 3mm DFN-10 Package
V_IN: 2.5V to 12V, V_OUT(MAX) = 27V, I_Q = 2.6mA, I_SD = < 8μA,
2mm × 2mm DFN-6 SC70 Package
V_IN: 2.3V to 16V, V_OUT(MAX) = 40V, I_Q = 65μA, I_SD = < 1μA,
3mm × 2mm DFN-8 Package
V_IN: 2.5V to 10V, V_OUT(MAX) = 32V, I_Q = 6mA, I_SD = < 12μA,
3mm × 2mm DFN-10 Package
V_IN: 2.5V to 12V, V_OUT(MAX) = 40V, I_Q = 4mA, I_SD = < 9μA,
3mm × 2mm DFN-8 Package
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
3524f
LT 0208 • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2008