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| 型号： | LTC3576EUFE-1#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| 封装： | 4 X 6 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-38 |
| 文件页数： | 1/48页 |
| 文件大小： | 583K |
| 代理商： | LTC3576EUFE-1#TRPBF |
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LTC3576/LTC3576-1
1
3576fb
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Switching Power Manager
with USB On-the-Go + Triple
Step-Down DC/DCs
n HDD-Based Media Players
n GPS, PDAs, Digital Cameras, Smart Phones
n Automotive Compatible Portable Electronics
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. Bat-Track and PowerPath are trademarks of Linear Technology
Corporation. All other trademarks are the property of their respective owners. Protected by U.S.
Patents, including 6522118, 6404251.
High Efciency PowerPath Manager with Overvoltage Protection
and Triple Step-Down Regulator
PowerPath Switching Regulator Efciency
to System Load (PVOUT/PVBUS)
n Bidirectional Switching Regulator with Bat-Track
Adaptive Output Control Provides Efcient Charging
and a 5V Output for USB On-The-Go
n Bat-Track Control of External High Voltage Step-
Down Switching Regulator
n Overvoltage Protection Guards Against Damage
n Instant-On Operation with Discharged Battery
n Triple Step-Down Switching Regulators with I2C
Adjustable Outputs (1A/400mA/400mA IOUT)
n 180mΩ Internal Ideal Diode + External Ideal Diode
Controller Powers the Load in Battery Mode
n Li-Ion/Polymer Battery Charger (1.5A Max ICHG)
n Battery Float Voltage: 4.2V (LTC3576), 4.1V (LTC3576-1)
n Compact (4mm
× 6mm × 0.75mm) 38-Pin QFN Package
The LTC3576/LTC3576-1 are highly integrated power
management and battery charger ICs for Li-Ion/Polymer
battery applications. They each include a high efciency,
bidirectional switching PowerPath manager with auto-
matic load prioritization, a battery charger, an ideal diode, a
controller for an external high voltage switching regulator
and three general purpose step-down switching regulators
with I2C adjustable output voltages. The internal switch-
ing regulators automatically limit input current for USB
compatibility and can also generate 5V at 500mA for USB
on-the-go applications when powered from the battery.
Both the USB and external switching regulator power paths
feature Bat-Track optimized charging to provide maximum
power to the application from supplies as high as 38V. An
overvoltage circuit protects the LTC3576/LTC3576-1 from
damage due to high voltage on the VBUS or WALL pins with
just two external components. The LTC3576/LTC3576-1 are
available in a low prole 38-pin (4mm
× 6mm × 0.75mm)
QFN package.
Li-Ion
0.8V TO 3.6V/400mA
3.3V/20mA
0.8V TO 3.6V/400mA
0.8V TO 3.6V/1A
RST
2
OPTIONAL
0V
T
TO OTHER
LOADS
+
LTC3576/LTC3576-1
TRIPLE
HIGH EFFICIENCY
STEP-DOWN
SWITCHING
REGULATORS
I2C PORT
ALWAYS ON LDO
MEMORY
RTC/LOW
POWER LOGIC
I2C
CORE
I/O
3576 TA01
μPROCESSOR
CHARGE
ENABLE
CONTROLS
USB COMPLIANT
BIDIRECTIONAL
SWITCHING
REGULATOR
OVERVOLTAGE
PROTECTION
EXTERNAL HIGH VOLTAGE
BUCK CONTROLLER
CC/CV
BATTERY
CHARGER
6
1
2
3
USB OR
5V AC
ADAPTER
AUTOMOTIVE
FIREWIRE, ETC.
LT3653
LOAD CURRENT (mA)
10
0
EFFICIENCY
(%)
20
40
60
80
100
1000
3576 TA01b
100
10
30
50
70
90
BAT = 4.2V
BAT = 3.3V
VBUS = 5V
IBAT = 0mA
10x MODE
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3576EUFE#PBF | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| LTC3670EDDB#PBF | 1.1 A SWITCHING REGULATOR, 2590 kHz SWITCHING FREQ-MAX, PDSO12 |
| LTC3677EUFF-3#TRPBF | POWER SUPPLY MANAGEMENT CKT, PQCC44 |
| LTC3677EUFF-3#PBF | POWER SUPPLY MANAGEMENT CKT, PQCC44 |
| LTC3707IGN | 3 A SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3576EUFE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs |
| LTC3576EUFE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs |
| LTC3577 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:8-Output Regulator with Sequencing and I2C |
| LTC3577-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Highly Integrated 6-Channel Portable PMIC |
| LTC3577-3 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Highly Integrated Portable Product PMIC |
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