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LTC3589IUJ-2#PBF

产品描述IC POWER MANAGEMENT
产品类别半导体    电源管理   
文件大小675KB,共50页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
标准
下载文档 详细参数 全文预览

LTC3589IUJ-2#PBF概述

IC POWER MANAGEMENT

LTC3589IUJ-2#PBF规格参数

参数名称属性值
应用手持式/移动设备,OMAP™
电流 - 电源8µA
电压 - 电源2.7 V ~ 5.5 V
工作温度-40°C ~ 125°C
安装类型表面贴装
封装/外壳40-WFQFN 裸露焊盘
供应商器件封装40-QFN(6x6)

文档预览

下载PDF文档
LTC3589/LTC3589-1/
LTC3589-2
8-Output Regulator with
Sequencing and I
2
C
FeaTures
n
n
n
n
n
n
n
n
n
n
n
n
DescripTion
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 step-down DC/DC converters for core, memory and
SoC rails, a buck-boost regulator for I/O at 1.8V to 5V and
three 250mA LDO regulators for low noise analog sup-
plies. An I
2
C serial port is used to control enables, output
voltage levels, dynamic voltage scaling, operating modes
and status reporting. Differences between the LTC3589,
LTC3589-1, and LTC3589-2 are summarized in Table 1.
Regulator start-up is sequenced by connecting outputs to
enable pins in the desired order or programmed via the
I
2
C port. System power-on, power-off, and reset functions
are controlled by pushbutton interface, pin inputs, or I
2
C
interface.
The LTC3589 supports i.MX53/51, PXA and OMAP pro-
cessors with eight independent rails at appropriate power
levels. Other features include interface signals such as
the VSTB pin that simultaneously toggle up to four rails
between programmed run and standby output voltages.
The device is available in a low profile 40-pin 6mm
×
6mm
exposed pad QFN package.
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Triple I
2
C Adjustable High Efficiency Step-Down DC/
DC Converters: 1.6A, 1A/1.2A, 1A/1.2A
High Efficiency 1.2A Buck-Boost DC/DC Converter
Triple 250mA LDO Regulators
Pushbutton ON/OFF Control with System Reset
Flexible Pin-Strap Sequencing Operation
I
2
C and Independent Enable Control Pins
Power Good and Reset Outputs
Dynamic Voltage Scaling and Slew Rate Control
Selectable 2.25MHz or 1.12MHz Switching Frequency
Always-Alive 25mA LDO Regulator
8µA Standby Current
40-Pin 6mm
×
6mm
×
0.75mm QFN
Handheld Instruments and Scanners
Portable Industrial Devices
Automotive Infotainment
Medical Devices
High End Consumer Devices
Multirail Systems
Supports Freescale i.MX53/51, Marvell PXA and
Other Application Processors
applicaTions
n
n
n
n
n
n
n
Typical applicaTion
V
IN
2.7V TO 5.5V
0.8V TO V
IN
AT 25mA
VIN
1µH
SW1
22µF
LDO2
1µF
LDO3
1µF
LDO4
I
2
C
ENABLES
PWR_ON
ON
GND
SW4AB
SW4CD
BB_OUT
WAKE
STATUS
3589 TA01a
Start-Up Sequence
LDO1_STBY
0.5V TO V
IN
AT 1.6A
0.5V TO V
IN
AT 1A
0.5V/DIV
WAKE
(1V/DIV)
SW2
LDO3
SW3
LDO2
SW1
500µs/DIV
1.8V TO 5V
4
22µF
3589 TA01b
1µF
SW2
LTC3589
1.5µH
SW3
1.5µH
BB_OUT
0.36V TO V
IN
AT 250mA
1.8V
AT 250mA
2.8V
AT 250mA
22µF
0.5V TO V
IN
AT 1A
22µF
1µF
3
7
2.7µH
3589fh
For more information
www.linear.com/LTC3589
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