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LM3673TL-1.875/NOPB PDF预览

LM3673TL-1.875/NOPB

更新时间: 2024-11-15 20:35:47
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
28页 4994K
描述
2MHz, 350mA Step-Down DC-DC Converter 5-DSBGA -30 to 85

LM3673TL-1.875/NOPB 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:BGA
包装说明:VFBGA, BGA5,2X3,20针数:5
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01Factory Lead Time:1 week
风险等级:5.16其他特性:PULSE FREQUENCY MODULATION TECHNIQUE IS ALSO POSSIBLE
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制模式:VOLTAGE-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:5.5 V
最小输入电压:2.7 V标称输入电压:3.6 V
JESD-30 代码:R-XBGA-B5JESD-609代码:e1
长度:1.387 mm湿度敏感等级:1
功能数量:1端子数量:5
最高工作温度:85 °C最低工作温度:-30 °C
最大输出电流:0.855 A封装主体材料:UNSPECIFIED
封装代码:VFBGA封装等效代码:BGA5,2X3,20
封装形状:RECTANGULAR封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:0.675 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BUCK
最大切换频率:2600 kHz温度等级:OTHER
端子面层:Tin/Silver/Copper (Sn/Ag/Cu)端子形式:BALL
端子节距:0.5 mm端子位置:BOTTOM
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:1.057 mm
Base Number Matches:1

LM3673TL-1.875/NOPB 数据手册

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Sample &  
Buy  
Support &  
Community  
Product  
Folder  
Tools &  
Software  
Technical  
Documents  
LM3673  
SNVS434M JULY 2006REVISED NOVEMBER 2016  
LM3673 2-MHz, 350-mA Step-Down DC-DC Converter  
1 Features  
3 Description  
The LM3673 step-down DC-DC converter is  
1
16-µA Typical Quiescent Current  
optimized for powering low voltage circuits from a  
single Li-Ion cell battery and input voltage rails from  
2.7 V to 5.5 V. It provides up to 350-mA load current  
over the entire input voltage range. There are several  
different fixed voltage output options available, as  
well as an adjustable output voltage version ranging  
from 1.1 V to 3.3 V.  
350-mA Maximum Load Capability  
2-MHz PWM Fixed Switching Frequency (Typical)  
Automatic PFM/PWM Mode Switching  
Available in Fixed and Adjustable Output Voltages  
Internal Synchronous Rectification for High  
Efficiency  
The device offers superior features and performance  
for mobile phones and similar portable systems. The  
LM3673 uses intelligent automatic switching between  
pulse width modulation (PWM) and pulse frequency  
modulation (PFM) for better efficiency. During PWM  
mode, the device operates at a fixed-frequency of  
2 MHz (typical). Hysteretic PFM mode extends the  
battery life by reducing the quiescent current to 16 µA  
(typical) during light load and standby operation.  
Internal synchronous rectification provides high  
efficiency during PWM mode operation. In shutdown  
mode, the device turns off and reduces battery  
consumption to 0.01 µA (typical).  
Internal Soft Start  
0.01-µA Typical Shutdown Current  
Operates From a Single Li-Ion Cell Battery  
Current Overload and Thermal Shutdown  
Protection  
Only Three Tiny Surface-Mount External  
Components Required (One Inductor, Two  
Ceramic Capacitors)  
2 Applications  
Mobile Phones  
PDAs  
The LM3673 is available in a tiny 5-pin DSBGA  
package. A high switching frequency of 2 MHz  
(typical) allows the use of three tiny surface-mount  
components: an inductor and two ceramic capacitors.  
MP3 Players  
W-LAN  
Portable Instruments  
Digital Still Cameras  
Portable Hard Disk Drives  
Device Information(1)  
PART NUMBER  
PACKAGE  
BODY SIZE (MAX)  
LM3673  
DSBGA (5)  
1.413 mm × 1.083 mm  
(1) For all available packages, see the orderable addendum at  
the end of the data sheet.  
Typical Application Circuit for ADJ Version  
Typical Application Circuit  
VIN  
VIN  
L1: 2.2 µH  
L1: 2.2 µH  
VOUT  
2.7 V to 5.5 V  
2.7 V to 5.5 V  
VIN  
GND  
EN  
VOUT  
VIN  
GND  
EN  
SW  
FB  
SW  
1
5
1
5
COUT  
10 µF  
CIN  
COUT  
10 µF  
LM3673-  
ADJ  
CIN  
4.7 µF  
LM3673  
4.7 µF  
C1  
C2  
R1  
R2  
2
2
3
FB  
3
4
4
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,  
intellectual property matters and other important disclaimers. PRODUCTION DATA.  
 
 
 
 
 

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