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LTC3577EUFF-3PBF PDF预览

LTC3577EUFF-3PBF

更新时间： 2024-01-12 03:29:31
品牌 Logo 应用领域
凌特 - Linear 集成电源管理电路便携式
页数 文件大小 规格书
52页 555K
描述
Highly Integrated Portable Product PMIC

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中文翻译

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LTC3577EUFF-3PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN,
针数：44Reach Compliance Code：compliant
风险等级：5.2可调阈值：YES
模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码：R-PQCC-N44
JESD-609代码：e3长度：7 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：44
最高工作温度：85 °C最低工作温度：
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装形状：RECTANGULAR封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：0.8 mm最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 V标称供电电压 (Vsup)：3.3 V
表面贴装：YES技术：CMOS
温度等级：OTHER端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

LTC3577EUFF-3PBF 数据手册

 浏览型号LTC3577EUFF-3PBF的Datasheet PDF文件第2页浏览型号LTC3577EUFF-3PBF的Datasheet PDF文件第3页浏览型号LTC3577EUFF-3PBF的Datasheet PDF文件第4页浏览型号LTC3577EUFF-3PBF的Datasheet PDF文件第5页浏览型号LTC3577EUFF-3PBF的Datasheet PDF文件第6页浏览型号LTC3577EUFF-3PBF的Datasheet PDF文件第7页 
LTC3577-3/LTC3577-4  
Highly Integrated  
Portable Product PMIC  
FEATURES  
DESCRIPTION  
The LTC®3577-3/LTC3577-4 are highly integrated power  
managementICsforsinglecellLi-Ion/Polymerbatteryap-  
plications.ItincludesaPowerPathmanagerwithautomatic  
load prioritization, a battery charger, an ideal diode, input  
overvoltage protection and numerous other internal pro-  
tection features. The LTC3577-3/LTC3577-4 are designed  
toaccuratelychargefromcurrentlimitedsuppliessuchas  
USB by automatically reducing charge current such that  
the sum of the load current and the charge current does  
notexceedtheprogrammedinputcurrentlimit(100mAor  
500mAmodes).TheLTC3577-3/LTC3577-4reducethebat-  
teryvoltageatelevatedtemperaturestoimprovesafetyand  
reliability. The three step-down switching regulators and  
two LDOs provide a wide range of available supplies. The  
LTC3577-3/LTC3577-4 also include a pushbutton input to  
controlpowersequencingandsystemreset. Theonboard  
LED backlight boost circuitry can drive up to 10 series  
LEDs and includes versatile digital dimming via the I2C  
input.TheLTC3577-3/LTC3577-4aredesignedtosupport  
the SiRF Atlas IV processor and has pushbutton timing  
and sequencing different from other LTC3577 versions.  
The LTC3577-3/LTC3577-4 are available in a low profile  
4mm × 7mm × 0.75mm 44-pin QFN package.  
n
Full Featured Li-Ion/Polymer Charger/PowerPath™  
Control with Instant-On Operation  
n
Triple Adjustable High Efficiency Step-Down  
Switching Regulators (800mA, 500mA, 500mA I  
)
OUT  
2
n
I C Adjustable SW Slew Rates for EMI Reduction  
n
High Temperature Battery Voltage Reduction  
Improves Safety and Reliability  
n
Overvoltage Protection Controller for USB (V )/Wall  
BUS  
Inputs Provide Protection to 30V  
n
Integrated 40V Series LED Back Light Driver with 60dB  
2
Brightness Control and Gradation via I C  
n
n
1.5A Maximum Charge Current with Thermal Limiting  
Battery Float Voltage: 4.2V (LTC3577-3)  
4.1V (LTC3577-4)  
n
n
n
Pushbutton ON/OFF Control with System Reset  
Dual 150mA Current Limited LDOs  
Start-Up Timing Compatible with SiRF Atlas IV  
Processor  
n
Small 4mm × 7mm 44-pin QFN package  
APPLICATIONS  
n
PNDs, DMB/DVB-H, Digital/Satellite Radio,  
Media Players  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. PowerPath is a trademark of Linear Technology Corporation.  
All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 6522118, 6700364, 7511390, 5481178, 6580258. Other  
patents pending.  
n
Portable Industrial/Medical Products  
Other USB-Based Handheld Products  
n
TYPICAL APPLICATION  
5V  
10-LED Driver Efficiency  
ADAPTER  
OPTIONAL  
90  
80  
70  
60  
100mA/500mA  
1000mA  
USB  
V
OUT  
0V  
OVERVOLTAGE  
PROTECTION  
CC/CV  
MAX PWM  
CONSTANT  
CURRENT  
CHARGER  
+
50  
40  
30  
20  
10  
0
SINGLE CELL  
Li-Ion  
CHARGE  
NTC  
LTC3577-3/LTC3577-4  
2
0.8V to 3.6V/150mA  
0.8V to 3.6V/150mA  
DUAL LDO  
2
I C PORT  
REGULATORS  
LED BACKLIGHT WITH DIGITALLY  
CONTROLLED DIMMING  
4 TO 10 LED  
BOOST  
TRIPLE HIGH  
0.8V to 3.6V/800mA  
0.8V to 3.6V/500mA  
0.8V to 3.6V/500mA  
EFFICIENCY  
PUSHBUTTON  
CONTROL  
1.E-06 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01  
PB  
STEP-DOWN  
LED CURRENT (A)  
SWITCHING  
REGULATORS  
357734 TA01b  
357734 TA01a  
357734fa  
1
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中文翻译

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