LT3486I Просмотр технического описания (PDF) - Linear Technology
Номер в каталоге
Компоненты Описание
производитель
LT3486I Datasheet PDF : 20 Pages
| |||
LT3486
TYPICAL APPLICATION
12V to 8/8 White LEDs
12V (TYP) CIN
9V TO 15V 10µF
COUT1 D1
2.2µF
L1
10µH
L2
10µH
5V
C1 1µF
D2
COUT2
2.2µF
LUXEON
LEDs
LXCL-PWF1
100mA
DIMMING
INPUT 1
PWM
FREQ
1kHz
100k
SW1
OVP1
VIN CTRL1
VIN
SW2
OVP2
CTRL2 VIN
LUXEON
LEDs
LXCL-PWF1
OFF ON
SHDN
PWM1
LT3486
REF
PWM2
CREF
0.1µF
100mA
FB1
FB2
VC1
RT
VC2
3.65k
22pF
3.65k
21.5k
Q1
2.2nF
2.2nF
Q2
RFB1 COUT1, COUT2: 35V, X5R OR X7R
2Ω CIN: 25V, X5R OR X7R
C1: 10V, X5R OR X7R
CREF: 6.3V, X5R OR X7R
D1, D2: ZETEX ZLLS1000
L1, L2: TOKO D53LC (TYPE A)
Q1, Q2: FAIRCHILD FDN5630
DIMMING
INPUT 2
PWM
FREQ?
1kHz
RFB2 100k
2Ω
3486 TA10a
LED Current and Efficiency
vs PWM Duty Cycle
90
120
EFFICIENCY
85
100
80
80
LED CURRENT
75
60
70
40
65
60
0
20
VIN = 12V
8/8 LEDs
0
20
40
60
80
100
PWM DUTY CYCLE (%)
3486 TA10b
RELATED PARTS
PART NUMBER
LT1618
LT1932
LT1937
LTC3200
LTC3200-5
LTC3201
LTC3202
LTC3205
LT3465/LT3465A
LT3466
DESCRIPTION
Constant Current, Constant Voltage 1.24MHz, High Efficiency
Boost Regulator
Constant Current, 1.2MHz, High Efficiency White LED Boost
Regulator
Constant Current, 1.2MHz, High Efficiency White LED Boost
Regulator
Low Noise, 2MHz, Regulated Charge Pump White LED Driver
MS Package
Low Noise, 2MHz, Regulated Charge Pump White LED Driver
ThinSOT Package
Low Noise, 1.7MHz, Regulated Charge Pump White LED Driver
MS Package
Low Noise, 1.5MHz, Regulated Charge Pump White LED Driver
MS Package
High Efficiency, Multidisplay LED Controller
Constant Current, 1.2MHz/2.7MHz, High Efficiency White LED
Boost Regulator with Integrated Schottky Diode
Dual Full Function White LED Boost Regulator with Integrated
Schottky Diode
COMMENTS
Up to 16 White LEDs, VIN: 1.6V to 18V, VOUT(MAX) = 34V,
IQ = 1.8mA, ISD < 1µA, MS Package
Up to 8 White LEDs, VIN: 1V to 10V, VOUT(MAX) = 34V,
IQ = 1.2mA, ISD < 1µA, ThinSOTTM Package
Up to 4 White LEDs, VIN: 2.5V to 10V, VOUT(MAX) = 34V,
IQ = 1.9mA, ISD < 1µA, ThinSOT, SC70 Packages
Up to 6 White LEDs, VIN: 2.7V to 4.5V, IQ = 8mA, ISD < 1µA,
Up to 6 White LEDs, VIN: 2.7V to 4.5V, IQ = 8mA, ISD < 1µA,
Up to 6 White LEDs, VIN: 2.7V to 4.5V, IQ = 6.5mA, ISD < 1µA,
Up to 8 White LEDs, VIN: 2.7V to 4.5V, IQ = 5mA, ISD < 1µA,
Up to 4 (Main), 2 (Sub) and RGB, VIN: 2.8V to 4.5V,
IQ = 50µA, ISD < 1µA, QFN-24 Package
Up to Six White LEDs, VIN: 2.7V to 16V, VOUT(MAX) = 34V,
IQ = 1.9mA, ISD < 1µA, ThinSOT Package
Drives Up to 20 LEDs, VIN: 2.7V to 24V, VOUT(MAX) = 40V,
IQ = 5mA, ISD < 16µA, DFN Package
20 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3486fe
LT 0111 REV E • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 2008
Share Link: 