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LTC3407AEMSE-2 PDF预览

LTC3407AEMSE-2

更新时间: 2024-01-08 23:46:55
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
16页 271K
描述
Dual Synchronous 800mA,2.25MHz Step-Down DC/DC Regulator

LTC3407AEMSE-2 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, TSSOP10,.19,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.24模拟集成电路 - 其他类型:DUAL SWITCHING CONTROLLER
控制模式:CURRENT-MODE最大输入电压:5.5 V
最小输入电压:2.5 V标称输入电压:3.6 V
JESD-30 代码:S-PDSO-G10JESD-609代码:e3
长度:3 mm湿度敏感等级:1
功能数量:2端子数量:10
最高工作温度:85 °C最低工作温度:
最大输出电流:1.6 A封装主体材料:PLASTIC/EPOXY
封装代码:HTSSOP封装等效代码:TSSOP10,.19,20
封装形状:SQUARE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:1.1 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:2700 kHz技术:CMOS
温度等级:OTHER端子面层:Matte Tin (Sn)
端子形式:GULL WING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:30
宽度:3 mm

LTC3407AEMSE-2 数据手册

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LTC3407A-2  
Dual Synchronous 800mA,  
2.25MHz Step-Down  
DC/DC Regulator  
U
DESCRIPTIO  
FEATURES  
The LTC®3407A-2 is a dual, constant frequency, synchro-  
nousstep-downDC/DCconverter. Intendedforlowpower  
applications, it operates from a 2.5V to 5.5V input voltage  
range and has a constant 2.25MHz switching frequency,  
enabling the use of tiny, low cost capacitors and inductors  
1mm or less in height. Each output voltage is adjustable  
from 0.6V to 5V. Internal synchronous 0.35Ω, 1A power  
switches provide high efficiency without the need for  
external Schottky diodes.  
High Efficiency: Up to 95%  
Low Ripple (<35mVPK-PK) Burst Mode Operation;  
IQ = 40μA  
2.25MHz Constant Frequency Operation  
No Schottky Diodes Required  
Low RDS(ON) Internal Switches: 0.35Ω  
Current Mode Operation for Excellent Line  
and Load Transient Response  
Short-Circuit Protected  
Low Dropout Operation: 100% Duty Cycle  
A user selectable mode input is provided to allow the user  
to trade-off ripple noise for low power efficiency. Burst  
Mode® operation provides the highest efficiency at light  
loads, while Pulse Skip Mode provides the lowest ripple  
noise at light loads.  
Ultralow Shutdown Current: IQ <1μA  
Output Voltages from 5V down to 0.6V  
Power-On Reset Output  
Externally Synchronizable Oscillator  
Optional External Soft-Start  
To further maximize battery life, the P-channel MOSFETs  
are turned on continuously in dropout (100% duty cycle),  
and both channels draw a total quiescent current of only  
40μA. In shutdown, the device draws <1μA.  
, LT, LTC, LTM and Burst Mode are registered trademarks of Linear Technology  
Corporation. All other trademarks are the property of their respective owners. Protected by  
U.S. Patents including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131.  
Small Thermally Enhanced MSOP and 3mm × 3mm  
DFN Packages  
U
APPLICATIO S  
PDAs/Palmtop PCs  
Digital Cameras  
Cellular Phones  
Wireless and DSL Modems  
U
TYPICAL APPLICATIO  
1mm High 2.5V/1.8V at 800mA Step-Down Regulators  
Efficiency/Power Loss Curve  
100  
90  
1
2.5V  
V = 2.5V  
IN  
TO 5.5V  
1.8V  
80  
100k  
10μF  
0.1  
RUN/SS2  
V
RUN/SS1  
POR  
IN  
70  
MODE/SYNC  
RESET  
60  
LTC3407A-2  
50  
40  
0.01  
0.001  
0.0001  
2.2μH  
2.2μH  
V
OUT2  
= 2.5V  
V
= 1.8V  
OUT1  
SW2  
SW1  
AT 800mA  
AT 800mA  
22pF  
887k  
22pF  
887k  
30  
20  
V
= 3.3V  
IN  
Burst Mode OPERATION  
V
FB1  
V
FB2  
10  
0
NO LOAD ON OTHER CHANNEL  
GND  
280k  
442k  
10μF  
10μF  
1
10  
100  
1000  
LOAD CURRENT (mA)  
3407A2 TA02  
3407A2 TA01  
3407a2f  
1

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