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LM3370SD-3621/NOPB

更新时间： 2024-11-20 19:35:51
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
35页 5058K
描述
Dual Synchronous Step-Down DC-DC Converter with Dynamic Voltage Scaling Function 16-WSON

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LM3370SD-3621/NOPB 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：HVSON, SOLCC16,.16,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.63
其他特性：ALSO OPERATES IN PFM CONTROL TECHNIQUE, ALSO OPERATES IN ADJUSTABLE MODE FROM 1.5 TO 3.3V模拟集成电路 - 其他类型：DUAL SWITCHING CONTROLLER
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 VJESD-30 代码：R-PDSO-N16
JESD-609代码：e3长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-30 °C最大输出电流：1.4 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC16,.16,20封装形状：RECTANGULAR
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表面贴装：YES
切换器配置：BUCK最大切换频率：2000 kHz
温度等级：OTHER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 mmBase Number Matches：1

LM3370SD-3621/NOPB 数据手册

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LM3370  
www.ti.com  
SNVS406N –NOVEMBER 2005–REVISED MAY 2013  
LM3370 Dual Synchronous Step-Down DC-DC Converter  
with Dynamic Voltage Scaling Function  
Check for Samples: LM3370  
1
FEATURES  
APPLICATIONS  
•
I2C-compatible interface  
•
•
•
•
Baseband Processors  
Application Processors (Video, Audio)  
I/O Power  
2
–
–
–
VOUT1 = 1V to 2V in 50 mV Steps  
VOUT2 = 1.8V to 3.3V in 100 mV Steps  
Automatic PFM/PWM Mode Switching and  
Forced PWM Mode for Low Noise Operation  
Spread Spectrum Capability Using I2C  
FPGA Power and CPLD  
DESCRIPTION  
–
The LM3370 is a dual step-down DC-DC converter  
optimized for powering ultra-low voltage circuits from  
a single Li-Ion battery and input rail ranging from 2.7V  
to 5.5V. It provides two outputs with 600mA load per  
channel. The output voltage range varies from 1V to  
3.3V and can be dynamically controlled using the I2C-  
compatible interface. This dynamic voltage scaling  
function allows processors to achieve maximum  
performance at the lowest power level. The I2C-  
compatible interface can also be used to control auto  
PFM-PWM/PWM mode selection and other  
performance enhancing features.  
•
•
•
600mA Load Per Channel  
2MHz PWM Fixed Switching Frequency (Typ.)  
The Bucks Operate 180° Out-of-Phase Timing  
Offset for Noise and Input Surge Current  
Abatement  
•
Internal Synchronous Rectification for High  
Efficiency  
•
•
•
•
Internal Soft Start  
Power-on-Reset Function for Both Outputs  
2.7V ≤ VIN ≤ 5.5V  
The LM3370 offers superior features and  
performance for portable systems with complex  
Operates from a Single Li-Ion Cell or 3 Cell  
NiMH/NiCd Batteries and 3.3V/5.5V Fixed Rails  
power  
management  
requirements.  
Automatic  
•
•
•
2.2µH Inductor, 4.7µF Input and 10µF Output  
Capacitor Per Channel  
intelligent switching between PWM low-noise and  
PFM low-current mode offers improved system  
16-lead WSON Package (4 mm x 5 mm x 0.8  
mm)  
efficiency.  
Internal  
synchronous  
rectification  
enhances the converter efficiency without the use of  
further external devices.  
20-Bump DSBGA Package (3.0 mm x 2.0 mm x  
0.6 mm)  
Typical Application Circuit  
C
IN1  
4.7 mF  
V
IN1  
2.7V to 5.5V  
FB1  
SDA  
V
OUT1  
SW1  
L1:2.2 mH  
SCL  
PGND1  
SGND  
C
OUT1  
10 mF  
nPOR1  
nPOR2  
EN1  
V
V
IN1  
IN2  
LM3370  
V
DD  
V
IN1  
4.7 mF  
*
PGND2  
SW2  
V
OUT2  
EN2  
L2:2.2 mH  
V
IN2  
FB2  
C
OUT2  
10 mF  
2.7V to 5.5V  
C
IN2  
4.7 mF  
* Optional Capacitor  
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.  
All trademarks are the property of their respective owners.  
2
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 © 2005–2013, Texas Instruments Incorporated  
 
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