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参数资料
| 型号： | LTC3553EUD#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC20 |
| 封装： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件页数： | 1/36页 |
| 文件大小： | 518K |
| 代理商： | LTC3553EUD#PBF |
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LTC3553
1
3553fa
TYPICAL APPLICATION
DESCRIPTION
Micropower USB Power
Manager With Li-Ion Charger,
LDO and Buck Regulator
The LTC3553 is a micropower, highly integrated power
management and battery charger IC for single-cell
Li-Ion/Polymer battery applications. It includes a
PowerPath manager with automatic load prioritization,
a battery charger, an ideal diode and numerous internal
protection features. Designed specically for USB applica-
tions, the LTC3553 power manager automatically limits
input current to a maximum of either 100mA or 500mA.
Battery charge current is automatically reduced such that
the sum of the load current and the charge current does
not exceed the selected input current limit. The LTC3553
also includes a synchronous buck regulator, a low dropout
linear regulator (LDO), and a pushbutton controller. With all
supplies enabled in standby mode, the quiescent current
drawn from the battery is only 12μA. The LTC3553 is avail-
able in a 3mm × 3mm × 0.75mm 20-pin QFN package.
Battery Drain Current
vs Temperature
FEATURES
APPLICATIONS
n 12μA Standby Mode Quiescent Current (All Outputs On)
n Seamless Transition Between Input Power Sources:
Li-Ion/Polymer Battery and USB
n 240mΩ Internal Ideal Diode Provides Low Loss
PowerPath
n High Efciency 200mA Buck Regulator
n 150mA Low Dropout (LDO) Linear Regulator
n Pushbutton On/Off Control With System Reset
n Full Featured Li-Ion/Polymer Battery Charger
n Programmable Charge Current With Thermal Limiting
n Instant-On Operation With Discharged Battery
n 3mm × 3mm × 0.75mm 20-Pin QFN Package
n USB-Based Handheld Products
n Portable Li-Ion/Polymer Based Electronic Devices
n Wearable Electronics
n Low Power Medical Devices
VBUS
NTC
PROG
SEQ
HPWR
SUSP
LDO_ON
BUCK_ON
STBY
PBSTAT
ON
VOUT
CHRG
BAT
BVIN
VINLDO
LDO
LDO_FB
SW
BUCK_FB
ON/OFF
Li-Ion
BATTERY
10μF
2.2μF
10μF
100k
DIGITAL
CONTROL
T
1.87k
4.7μF
2.05M
649k
3.3V
150mA
10pF
10μF
332k
649k
1.2V
200mA
3553 TA01a
10μH
SYSTEM
LOAD
4.35V TO 5.5V
USB INPUT
LTC3553
+
TEMPERATURE (°C)
–50 –30 –10
30
50
70
90
130
110
10
0
BA
TTER
Y
DRAIN
CURRENT
(μA)
4
6
10
18
16
14
12
8
3553 TA01b
2
BUCK AND LDO ON
VBAT = 3.8V
STBY = 3.8V
REGULATORS LOAD = 0mA
ONLY LDO ON
ONLY BUCK ON
BUCK AND LDO OFF
HARD RESET
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath, Hot Swap and Bat-Track are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents, including
6522118, 6700364, 5481178, 6304066, 6570372, 6580258, 7511390 and other patents pending.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3554 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators |
| LTC3554EPD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators |
| LTC3554EPD#PBF | 功能描述:IC USB POWER MANAGER 20-UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| LTC3554EPD#TRPBF | 功能描述:IC USB POWER MANAGER 20-UTQFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| LTC3554EPDPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower USB Power Manager with Li-Ion Charger and Two Step-Down Regulators |
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