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LP3905SD-A3/NOPB PDF预览

LP3905SD-A3/NOPB

更新时间： 2024-11-15 11:14:15
品牌 Logo 应用领域
德州仪器 - TI 集成电源管理电路光电二极管
页数 文件大小 规格书
23页 1009K
描述
面向低功耗手持式应用的电源 IC (PMIC) | NHL | 14 | -40 to 85

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LP3905SD-A3/NOPB 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVSON, SOLCC14,.16,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.36
可调阈值：YES模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
控制模式：VOLTAGE-MODEJESD-30 代码：S-PDSO-N14
JESD-609代码：e3长度：4 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：14
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：0.6 A最大输出电压：3.3 V
最小输出电压：1 V封装主体材料：PLASTIC/EPOXY
封装代码：HVSON封装等效代码：SOLCC14,.16,20
封装形状：SQUARE封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Switching Regulator or Controllers
最大供电电流 (Isup)：10 mA最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：3 V标称供电电压 (Vsup)：3.8 V
表面贴装：YES最大切换频率：2000 kHz
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mm

LP3905SD-A3/NOPB 数据手册

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LP3905  
www.ti.com  
SNVS374D –JUNE 2006–REVISED MAY 2013  
LP3905 Power Management Unit For Low Power Handheld Applications  
Check for Samples: LP3905  
1
FEATURES  
KEY SPECIFICATIONS  
Buck Regulators  
•
Two Buck Regulators for Powering High  
Current Processor Functions or Peripheral  
Devices  
•
Fixed and Adjustable Voltage Options, Range  
1.0V to 3.3V(1)  
•
•
Two Linear Regulators for Powering Internal  
Processor Functions and I/Os  
•
•
Up to 90% Efficiency  
Auto-Switching PFM-PWM Mode and Fixed  
PWM Mode  
One Enable Pin for Buck1 and Linear  
Regulators 1 and 2  
•
•
•
•
•
2MHz PWM Fixed Switching Frequency (Typ)  
600mA Output Current  
•
•
•
Separate Enable Pin for Buck2  
Thermal and Current Overload Protection  
Small 14–Pin WSON Package (4x4mmx0.8mm)  
±4% Output Voltage Accuracy Over Temp  
Internal SoftStart  
2.2µH Inductor, 10µF Input and Output Caps  
APPLICATIONS  
Linear Regulators  
•
•
•
•
Baseband Processors  
Peripheral Processor (Video, Audio)  
I/O Power  
•
•
•
•
Output Options in the Range 1.5V to 3.3V(1)  
13.5µVrms Output Voltage Noise  
PSRR - 70dB @ 1kHz  
FPGA Power  
±3% Output Voltage Accuracy Over Full Line  
and Load Regulation  
DESCRIPTION  
•
•
•
•
0mA to 150mA Output Current  
Cin = 1.0µF, Cout = 0.47µF for 100mA O/P  
Cin = 1.0µF, Cout = 1.0µF for 150mA O/P  
80mV Dropout Voltage  
LP3905 is a multi-functional Power Management Unit,  
optimized for low power handheld applications. This  
device integrates two 600mA DC-DC buck regulators  
and two 150mA linear regulators. Fixed and  
adjustable buck output versions are available. The  
LP3905 additionally features two enable pins for the  
device output control and is offered in an WSON  
package.  
(1) Fixed output voltage devices can be customized to fit system  
requirements. Please contact Texas Instruments Sales Office.  
Typical Application Circuit  
LP3905  
Enable 1  
EN2  
TGND  
LDO2  
Vin2  
FB2  
GND_B2  
SW2  
LDO2  
Output  
Buck2  
Output  
0.47 mF  
1.0 mF  
2.2 mH  
2.2 mH  
10 mF  
10 mF  
VSupply  
Vin1  
VSupply  
LDO1  
Output  
Buck1  
Output  
LDO1  
GND  
EN1  
SW1  
0.47 mF  
10 mF  
GND_B1  
FB1  
Enable 2  
SGND  
BUCK GND  
LDO GND  
Figure 1. Typical Application Circuit – 14-Pin WSON Package  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2013, Texas Instruments Incorporated  
 
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LP3905SD-A3/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LP3905SDX-A3/NOPB TI

类似代替

 Power Management IC (PMIC) For Low Power Handheld Applications 14-WSON -40 to 85

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