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LT3694EFE#PBF

更新时间： 2024-09-09 19:22:07
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
28页 333K
描述
LT3694 - 36V, 2.6A Monolithic Buck Regulator With Dual LDO; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C

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LT3694EFE#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：TSSOP包装说明：HTSSOP, TSSOP20,.25
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.47其他特性：ALSO OPERATES AS LDO REGULATOR
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
最大输入电压：36 V最小输入电压：5 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G20
JESD-609代码：e3长度：6.5 mm
湿度敏感等级：1功能数量：1
端子数量：20最高工作温度：125 °C
最低工作温度：最大输出电流：2.6 A
封装主体材料：PLASTIC/EPOXY封装代码：HTSSOP
封装等效代码：TSSOP20,.25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）：260
认证状态：Not Qualified座面最大高度：1.2 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：OTHER
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：30宽度：4.4 mm
Base Number Matches：1

LT3694EFE#PBF 数据手册

 浏览型号LT3694EFE#PBF的Datasheet PDF文件第2页浏览型号LT3694EFE#PBF的Datasheet PDF文件第3页浏览型号LT3694EFE#PBF的Datasheet PDF文件第4页浏览型号LT3694EFE#PBF的Datasheet PDF文件第5页浏览型号LT3694EFE#PBF的Datasheet PDF文件第6页浏览型号LT3694EFE#PBF的Datasheet PDF文件第7页 
LT3694/LT3694-1  
36V, 2.6A Monolithic Buck  
Regulator With Dual LDO  
FEATURES  
DESCRIPTION  
The LT®3694/LT3694-1 are monolithic, current mode  
DC/DC converters with dual, low dropout regulator con-  
trollers. The switching converter is a step-down converter  
capable of generating up to 2.6A at its output. Each regu-  
lator has independent track/soft-start circuits simplifying  
power supply sequencing and interfacing with micro-  
controllers and DSPs.  
n
Wide Input Range: 4V to 36V  
n
Overvoltage Shutdown Protects Circuit Through  
70V Transients  
n
2.6A Output Switching Regulator with Internal  
Power Switch  
n
Dual, Low Dropout, Linear Regulator Controllers  
with Programmable Current Limit  
n
Tracking/Soft-Start Inputs and Power Good Output  
The switching frequency is set with a single resistor with a  
range of 250kHz to 2.5MHz. The high switching frequency  
permits the use of small inductors and ceramic capacitors  
leadingtoverysmalltripleoutputsolutions. Theconstant-  
switching frequency, combined with low impedance ce-  
ramic capacitors, results in low, predictable output ripple.  
Protectioncircuitrysensesthecurrentinthepowerswitch  
and external Schottky catch diode to protect the LT3694  
against short-circuit conditions. Frequency foldback and  
thermal shutdown provide additional protection.  
Simplify Soft-Start and Supply Sequencing  
n
Uses Small Inductors and Ceramic Capacitors  
n
V
= 0.75V (Buck and LDOs)  
OUT(MIN)  
n
n
Adjustable 250kHz to 2.5MHz Switching Frequency  
Accurate Enable Threshold Allows User  
Programmable Undervoltage Lockout  
n
n
Options for Clock Synchronization (LT3694) or Clock  
Output to Enable Synchronization to Other Switching  
Regulators (LT3694-1)  
Thermally Enhanced 28-Lead 4mm × 5mm QFN and  
20-Lead TSSOP Packages  
With its wide input voltage range of 4V to 36V, the LT3694  
regulatesabroadarrayofpowersourcesfrom4-cellbatteries  
and5Vlogicrailstounregulatedwalltransformers,leadacid  
batteriesanddistributedpowersupplies.TheLT3694canbe  
synchronized to an external clock with the SYNC pin while  
the LT3694-1 offers a CLKOUT pin allowing other DC/DC  
converters to synchronize to the LT3694-1 clock.  
APPLICATIONS  
n
Automotive  
n
Industrial  
n
DSL and Cable Modems  
n
Distributed Power Regulation  
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.  
n
Wall Transformer Regulation  
TYPICAL APPLICATION  
V
IN  
Efficiency at VOUT = 3.3V  
4.5V TO 36V  
4.7µF  
V
EN/UVLO  
BIAS BST  
IN  
100  
0.22µF  
B340A  
f
= 800kHz  
SW  
4.7µH  
OUT1  
3.3V  
1.7A  
TRK/SS1  
TRK/SS2  
TRK/SS3  
SW  
V
V
= 4.5V  
= 12V  
IN  
90  
80  
70  
60  
50  
1nF  
34k  
10k  
IN  
DA  
FB1  
0.1Ω  
47µF  
V
= 36V  
LT3694  
IN  
330pF  
OUT1  
LIM2  
DRV2  
41.2k  
V
C1  
OUT2  
2.5V  
450mA  
OUT1  
LIM3  
DRV3  
0.1Ω  
24.9k  
10.7k  
OUT3  
1.8V  
450mA  
2.2µF  
FB2  
SYNC  
15.4k  
2.2µF  
FB3  
PGOOD  
RT  
0
1
2
3
51.1k  
11k  
I
(A)  
OUT  
GND  
36941 TA01b  
f
= 800kHz  
SW  
36941 TA01a  
36941fb  
1
1234567...28

中文翻译

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LT3694EFE#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LT3694EFE#TRPBF Linear

完全替代

 LT3694 - 36V, 2.6A Monolithic Buck Regulator With Dual LDO; Package: TSSOP; Pins: 20; Temp

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