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參數資料
| 型號： | LTC3675EUFF#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC44 |
| 封裝： | 4 X 7 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-44 |
| 文件頁數： | 1/36頁 |
| 文件大小： | 413K |
| 代理商： | LTC3675EUFF#TRPBF |
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LTC3675
1
3675f
TYPICAL APPLICATION
DESCRIPTION
7-Channel Congurable
High Power PMIC
The LTC3675 is a digitally programmable high efciency
multioutput power supply plus dual string LED driver IC
optimized for high power single cell Li-Ion/Polymer applica-
tions. The DC/DCs consist of four synchronous buck con-
verters (1A/1A/500mA/500mA), one synchronous boost
DC/DC (1A), and one buck-boost DC/DC (1A) all powered
from a 2.7V to 5.5V input. The 40V LED driver can regulate
up to 25mA of current through two LED strings with up to
10 LEDs each. The LED driver may also be congured as
a general purpose high voltage boost converter.
DC/DC enables, output voltages, switch slew rates and
operating modes may all be independently programmed
over I2C or used in standalone mode via simple I/O and
power-up defaults. The buck DC/DCs may be used inde-
pendently or paralleled to achieve higher output currents
with a shared inductor. LED enable, 60dB brightness control
and up/down gradation are programmed using I2C. Alarm
levels for low VIN and high die temperature may also be
programmed via I2C with a maskable interrupt output to
monitor DC/DC and system faults.
Pushbutton ON/OFF/RESET control and a power-on reset
output provide exible and reliable power-up sequencing.
The LTC3675 is available in a low prole (0.75mm), ther-
mally enhanced 44-lead 4mm
× 7mm QFN package.
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks of
Linear Technology Corporation and Hot Swap is a trademark of Linear Technology Corporation. All
other trademarks are the property of their respective owners.
FEATURES
APPLICATIONS
n Four Monolithic Synchronous Buck DC/DCs
(1A/1A/500mA/500mA)
n Buck DC/DCs Can Be Paralleled to Deliver Up to
2
× Current with a Single Inductor
n Independent 1A Boost and 1A Buck-Boost DC/DCs
n Dual String I2C Controlled 40V LED Driver
n I2C Programmable Output Voltage, Operating
Mode, and Switch Node Slew Rate for All DC/DCs
n I2C Read Back of DC/DC, LED Driver, Fault Status
n I2C Programmable VIN and Die Temperature
Warnings
n Maskable Interrupts to Report DC/DC, VIN and Die
Temperature Faults
n Pushbutton ON/OFF/RESET
n Always-On 25mA LDO
n Low Quiescent Current: 16μA (All DC/DCs Off)
n 4mm
× 7mm × 0.75mm 44-Lead QFN Package
n High Power (5W to 10W) Single Cell Li-Ion/Polymer
Applications
n Portable Industrial Applications, Handy Terminals,
Portable Instruments
n Multioutput Low Voltage Power Supplies
LTC3675
EXPOSED PAD
0.01μF
PUSH BUTTON
DIGITAL
CONTROL
2.7V TO 5.5V
VIN
I2C
EN1
EN2
EN3
EN4
ENBB
IRQB
RSTB
WAKE
PBSTAT
ONB
CT
SW1
SW2
SW3
SW4
SW5
VOUT5
SWAB6
SWCD6
VOUT6
LDO_OUT
SW7
LED1
LED2
0.425V TO VIN, 1A MAX
0.425V TO VIN, 500mA MAX
VIN
VIN TO 5.35V, 1A MAX
2.65V TO 5.25V, 1A MAX
0.8V TO VIN, 25mA MAX
3675 TA01
UP TO 10 LEDS
PER STRING
VIN
3
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC3676EUJ#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:DP-PMIC Multifunction, PMIC For Applications Processors |
| LTC3676EUJ-1#PBF | 制造商:Linear Technology 功能描述:IC CONV I.MX6 40QFN 制造商:Linear Technology 功能描述:DP-PMIC Multifunction, PMIC For Applications Processors |
| LTC3676IUJ#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:IC CONV I.MX6 40QFN 制造商:Linear Technology 功能描述:IC POWER MANAGEMENT SOLUTION 制造商:Linear Technology 功能描述:DP-PMIC Multifunction, PMIC For Applications Processors |
| LTC3676IUJ#TRPBF | 制造商:Linear Technology 功能描述:IC CONV I.MX6 40QFN |
| LTC3676IUJ-1#PBF | 制造商:Linear Technology 功能描述:IC CONV I.MX6 40QFN 制造商:Linear Technology 功能描述:IC POWER MANAGEMENT SOLUTION 制造商:Linear Technology 功能描述:IC, POWER MANAGEMENT SOLUTION, QFN-40 |
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