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LTC3589EUJ-TRPBF

更新时间： 2024-11-13 05:43:55
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
44页 560K
描述
8-Output Regulator with Sequencing and I2C

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LTC3589EUJ-TRPBF 数据手册

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Electrical Specifications Subject to Change  
LTC3589  
8-Output Regulator with  
2
Sequencing and I C  
FEATURES  
DESCRIPTION  
2
The LTC®3589 is a complete power management solu-  
tion for ARM and ARM-based processors and advanced  
portable microprocessor systems. The device contains  
three synchronous step-down DC/DC converters for  
core, memory and SoC rails, a synchronous buck-boost  
regulator for I/O at 3.3V to 5V, and three 250mA LDO  
n
Triple I C Adjustable High Efficiency Step-Down  
Switching Regulators: 1.6A, 1A, 1A  
n
High Efficiency 1.2A Buck-Boost Switching Regulator  
n
Triple 250mA LDO Regulators  
n
Always Alive 25mA LDO Regulator  
n
Flexible Pin-Strap Sequencing Operation  
2
2
n
I C and Independent Enable Control Pins  
regulatorsforlownoiseanalogsupplies. AnI Cserialport  
n
Power Good and Reset Outputs  
is used to control regulator enables, output voltage levels,  
dynamic voltage scaling and slew rate, operating modes  
and status reporting. Regulator start-up is sequenced by  
connecting regulator outputs to enable pins in the desired  
n
Dynamic Voltage Scaling and Slew Rate Control  
n
Selectable 2.25MHz or 1.12MHz Switching Frequency  
n
Pushbutton ON/OFF Control with System Reset  
n
2
10μA Standby Current  
order or via the I C port. System power-on, power-off  
n
40-Pin 6mm × 6mm × 0.75mm QFN  
and reset functions are controlled by pushbutton inter-  
2
face, pin inputs, or I C interface. The LTC3589 supports  
APPLICATIONS  
i.MX, PXA and OMAP processors with eight independent  
rails at appropriate power levels, dynamic control and  
sequencing. Other features include interface signals such  
as the VSTB pin that toggles between programmed run  
and standby output voltages on up to four rails simultane-  
ously. The device is available in a low profile 40-pin 6mm  
× 6mm exposed pad QFN package.  
n
Handheld Instruments and Scanners  
n
Portable Industrial Devices  
n
Automotive Infotainment  
n
Portable Medical Devices  
n
High End Consumer Devices  
n
Multirail Systems  
n
Supports Freescale i.MX, Marvell PXA and Other  
L, LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered  
trademarks, Hot Swap and Bat-track are trademarks of Linear Technology Corporation. All other  
trademarks are the property of their respective owners.  
Application Processors  
TYPICAL APPLICATION  
V
2.7V TO 5.5V  
IN  
Start-Up Sequence  
V
V
IN  
CORE  
VRTC 1.2V  
AT 25mA  
SW1  
SW2  
SW3  
0.6V TO 1.2V  
AT 1.6A  
LDO1_STDBY  
I/O  
V
MEMORY  
0.9V TO 1.2V  
AT 250mA  
SRAM  
LTC3589  
WAKE  
(1V/DIV)  
0.9V TO 1.8V  
AT 1A  
LDO2  
V
SRAM  
V
SOC  
ANALOG 1.8V  
AT 250mA  
ANALOG  
LDO3  
LDO4  
0.625V TO 1.25V  
AT 1A  
DDR  
MEMORY  
V
SOC  
1.8V, 2.5V,  
2.8V, 3.3V  
AT 250mA  
MEMORY  
3
7
SW4AB  
SW4CD  
BB_OUT  
2
V
CORE  
I C  
I/O  
ENABLES  
VSTB  
3589 TA01b  
500μs/DIV  
3.3V AT 1.2A  
FROM μPROCESSOR  
OR 5V AT 1A  
PWR_ON  
WAKE  
HDD  
OR I/O  
ON (PB)  
PBSTAT  
PGOOD  
RSTO  
GND  
3589 TA01a  
3589p  
1
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