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LT3686AIMSE#PBF

更新时间： 2024-11-11 20:11:23
品牌 Logo 应用领域
凌特 - Linear 开关光电二极管
页数 文件大小 规格书
30页 550K
描述
LT3686A - 37V/1.2A Step-Down Regulator in 3mm x 3mm DFN and MSE; Package: MSOP; Pins: 12; Temperature Range: -40°C to 85°C

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LT3686AIMSE#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：MSOP包装说明：HTSSOP, TSSOP12,.19
针数：12Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：37 V最小输入电压：3.6 V
标称输入电压：10 VJESD-30 代码：R-PDSO-G12
JESD-609代码：e3长度：4.039 mm
湿度敏感等级：1功能数量：1
端子数量：12最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：2.65 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP12,.19封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：NOT SPECIFIED
认证状态：Not Qualified座面最大高度：1.1 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：2500 kHz
技术：BIPOLAR温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3 mm
Base Number Matches：1

LT3686AIMSE#PBF 数据手册

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LT3686A  
37V/1.2A Step-Down  
Regulator in 3mm × 3mm DFN  
and MSE  
FeAtures  
Description  
The LT®3686A is a current mode PWM step-down DC/DC  
converter with an internal power switch. The wide input  
range of 3.6V to 37V makes the LT3686A suitable for  
regulatingpowerfromawidevarietyofsources, including  
24V industrial supplies and automotive batteries. Its high  
maximum frequency allows the use of tiny inductors and  
capacitors, resulting in a very small solution. Operating  
frequencyabovetheAMbandavoidsinterferingwithradio  
reception, making the LT3686A particularly suitable for  
automotive applications.  
■
Wide Input Range:  
Operation from 3.6V to 37V  
Overvoltage Lockout Protects Circuit Through  
60V Transients  
■
Low Minimum On-Time:  
Converts 16V to 3.3V  
1.2A Output Current  
at 2MHz  
IN  
OUT  
■
■
■
■
■
■
■
■
■
■
Adjustable Frequency: 300kHz to 2.5MHz  
Constant Switching Frequency at Light Loads  
Can Be Synchronized to External Clock  
Tracking and Soft-Start  
Cycle-by-cycle current limit, thermal shutdown and DA  
current sense provide protection against fault conditions.  
Soft-start and frequency foldback eliminate input current  
surgeduringstart-up.Anoptionalinternalregulatedactive  
load at the output via the BD pin keeps the LT3686A at  
full switching frequency at light loads, resulting in low,  
predictable output ripple above the audio and AM bands.  
Internal compensation and an internal boost diode reduce  
external component count.  
Precision UVLO  
Short-Circuit Robust  
I in Shutdown <1µA  
Q
Internally Compensated  
Thermally Enhanced MSOP and 3mm × 3mm DFN  
Packages  
ApplicAtions  
■
Automotive Systems  
The LT3686A offers external synchronization capability,  
whereas the LT3686 does not.  
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks  
of Linear Technology Corporation. All other trademarks are the property of their respective  
owners.  
■
Battery-Powered Equipment  
■
Wall Transformer Regulation  
Distributed Supply Regulation  
■
typicAl ApplicAtion  
3.3V Step-Down Converter  
12VIN Efficiency (2MHz)  
90  
80  
V
IN  
V
BD  
IN  
6V TO 37V  
3.3V  
OUT  
2.2µF  
EN/UVLO  
BOOST  
0.22µF  
6.8µH  
70  
60  
50  
40  
30  
20  
10  
0
5V  
OUT  
2MHz  
LT3686A  
V
3.3V  
1.2A  
SW  
SYNC/MODE  
OUT  
MBRM140  
31.6k  
SS  
RT  
DA  
FB  
10nF  
GND  
10k  
22µF  
31.6k  
3686A TA01a  
0
400  
600  
800 1000 1200  
LOAD CURRENT (mA)  
200  
(V 6V TO 16V AT 2MHz)  
IN  
3686A TA01b  
3686afa  
1
1234567...30

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