LTC3452_15 Datasheet, PDF (16/16 Pages) Linear Technology – Synchronous Buck-Boost MAIN/CAMERA White LED Driver

LTC3452
TYPICAL APPLICATIO
4 × 20mA White LED Display + 2 × 150mA Camera Light Driver
V_IN
3V TO 5.5V
2.2µF
L
4.7µH
150mA
150mA
V_IN PV_IN SW1 SW2 V_OUT
D1
D2
EN_H
EN_H
I_SETH
LED_H1
4.02k
LED_H2
V_C
0.1µF
EN_L
EN_L
I_SETL
1MHz
BUCK/BOOST
LTC3452
LED_L1, 20mA
LED_L2, 20mA
LED_L3, 20mA
LED_L4, 20mA
LED_L5, UNUSED
10.2k
GND
GND
PGND
EXPOSED PAD
3452 TA02a
D3
D4
D5
D6
D1, D2: AOT 2015
D3-D6: NICHIA NSCW100
L: COILCRAFT D03314-472
4.7µF
LOW
POWER
LED
BANK
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
LT1618
Constant Current, Constant Voltage 1.4MHz, High Efficiency V_IN: 1.6V to 18V, V_OUT(MAX) = 34V, I_Q = 1.8mA, I_SD = <1µA,
Boost Regulator
MS10 Package/EDD Package
LT1930/LT1930A 1A (I_SW), 1.2MHz/2.2MHz, High Efficiency Step-Up
DC/DC Converter
V_IN: 2.6V to 16V, V_OUT(MAX) = 34V, I_Q = 4.2mA/5.5mA, I_SD = <1µA,
ThinSOT Package
LT1932
Constant Current, 1.2MHz, High Efficiency White LED
Boost Regulator
V_IN: 1V to 10V, V_OUT(MAX) = 34V, I_Q = 1.2mA, I_SD = <1µA,
ThinSOT Package
LT1937
Constant Current, 1.2MHz, High Efficiency White LED
Boost Regulator
V_IN: 2.5V to 10V, V_OUT(MAX) = 34V, I_Q = 1.9mA, I_SD = <1µA,
ThinSOT Package/SC70 Package
LTC3205
High Efficiency, Multi-Display LED Controller
V_IN: 2.8V to 4.5V, V_OUT(MAX) = 6V, I_Q = 50µA, I_SD = <1µA,
QFN-24 Package
LTC3215
700mA Low Noise High Current LED Charge Pump
V_IN: 2.9V to 4.4V, V_OUT(MAX) = 5.5V, I_Q = 300µA, I_SD = <2.5µA,
DFN Package
LTC3216
1A Low Noise High Current LED Charge Pump with
Independent Flash/Torch Current
V_IN: 2.9V to 4.4V, V_OUT(MAX) = 5.5V, I_Q = 300µA, I_SD = <2.5µA,
DFN Package
LTC3440/
LTC3441
600mA/1.2A I_OUT, 2MHz/1MHz, Synchronous Buck-Boost
DC/DC Converter
V_IN: 2.4V to 5.5V, V_OUT(MAX) = 5.25V, I_Q = 25µA/50µA, I_SD = <1µA,
MS-10 Package/DFN Package
LTC3443
LTC3453
600mA/1.2A I_OUT, 600kHz, Synchronous Buck-Boost
DC/DC Converter
500mA Synchronous Buck-Boost High Power White
LED Driver
V_IN: 2.4V to 5.5V, V_OUT(MAX) = 5.25V, I_Q = 28µA, I_SD = <1µA,
DFN Package
V_IN: 2.7V to 5.5V, V_OUT(MAX) = 4.5V, I_Q = 600µA, I_SD = 6µA,
QFN-16 Package
LTC3454
1A Synchronous Buck-Boost High Power White
LED Driver
V_IN: 2.7V to 5.5V, V_OUT(MAX) = 5.15V, I_Q = 825µA, I_SD = 0µA,
DFN Package
LT3465/LT3465A Constant Current, 1.2MHz/2.7MHz, High Efficiency White LED V_IN: 2.7V to 16V, V_OUT(MAX) = 34V, I_Q = 1.9mA, I_SD = <1µA,
Boost Regulator with Integrated Schottky Diode
ThinSOT Package
LT3466
Dual Constant Current, 2MHz, High Efficiency White LED
Boost Regulator with Integrated Schottky Diode
V_IN: 2.7V to 24V, V_OUT(MAX) = 40V, I_Q = 5mA, I_SD = <16µA,
DFN Package
LT3479
3A, Full Featured DC/DC Converter with Soft-Start and
Inrush Current Protection
V_IN: 2.5V to 24V, V_OUT(MAX) = 40V, I_Q = 6.5mA, I_SD = <1µA,
DFN Package/TSOPP Package
3452f
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
LT 0406 • PRINTED IN THE USA
© LINEAR TECHNOLOGY CORPORATION 2006