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LTC3565IDD#PBF

更新时间： 2024-02-19 21:04:43
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
22页 801K
描述
LTC3565 - 1.25A, 4MHz, Synchronous Step-Down DC/DC Converter; Package: DFN; Pins: 10; Temperature Range: -40°C to 85°C

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LTC3565IDD#PBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：DFN包装说明：HVSON, SOLCC10,.12,20
针数：10Reach 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 IN ADJUSTABLE MODE FROM 0.6 TO 5V
模拟集成电路 - 其他类型：SWITCHING REGULATOR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 VJESD-30 代码：S-PDSO-N10
JESD-609代码：e3长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：2.5 A
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC10,.12,20封装形状：SQUARE
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：4000 kHz
技术：CMOS温度等级：AUTOMOTIVE
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：3 mm
Base Number Matches：1

LTC3565IDD#PBF 数据手册

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LTC3565  
1.25A, 4MHz, Synchronous  
Step-Down DC/DC Converter  
FEATURES  
DESCRIPTION  
The LTC®3565 is a constant frequency, synchronous  
step-down DC/DC converter. Intended for medium power  
applications, it operates from a 2.5V to 5.5V input voltage  
range and has a user-configurable operating frequency up  
to 4MHz, allowing the use of tiny, low cost capacitors and  
inductors 1mm or less in height. The output voltage is  
adjustable from 0.6V to 5.5V. Internal synchronous power  
switches provide high efficiency. The LTC3565’s current  
mode architecture and external compensation allow the  
transient response to be optimized over a wide range of  
loads and output capacitors.  
n
High Efficiency: Up to 95%  
IN  
n
V Range: 2.5V to 5.5V  
n
High Frequency Operation: Up to 4MHz  
n
Selectable Low Ripple (Typical 25mV  
)
p-p  
Burst Mode® Operation: I = 40µA  
Q
n
n
n
n
Stable with Ceramic Capacitors  
Uses Tiny Capacitors and Inductor  
Low R  
Internal Switches: 0.15Ω  
DS(ON)  
Current Mode Operation for Excellent Line  
and Load Transient Response  
Short-Circuit Protected  
Low Dropout Operation: 100% Duty Cycle  
n
n
n
n
n
n
n
The LTC3565 can be configured for automatic power  
saving Burst Mode operation (I = 40µA) to reduce gate  
charge losses when the load current drops below the level  
required for continuous operation. For reduced noise and  
RF interference, the SYNC/MODE pin can be configured to  
skip pulses or provide forced continuous operation.  
Low Shutdown Current: I ≤ 1µA  
Q
Q
Output Voltages from 0.6V to 5V  
Synchronizable to External Clock  
Supports Pre-Biased Outputs  
Small 10-Lead (3mm × 3mm) DFN or MSOP Package  
To further maximize battery life, the P-channel MOSFET  
is turned on continuously in dropout (100% duty cycle).  
In shutdown, the device draws <1µA.  
L, LT, LTC, LTM, Linear Technology the Linear logo, Burst Mode and OPTI-LOOP are registered  
trademarks of Linear Technology Corporation. Hot Swap and ThinSOT are trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
Protected by U.S. Patents including 5481178, 6580258, 6498466, 6611131.  
APPLICATIONS  
n
Notebook Computers  
n
Digital Cameras  
n
Cellular Phones  
n
Handheld Instruments  
n
Board Mounted Power Supplies  
TYPICAL APPLICATION  
Efficiency and Power Loss vs Output Current  
Step-Down 2.5V/1.25A Regulator  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1
V
IN  
2.5V TO 5.5V  
22µF  
0.1  
SV PV  
IN  
IN  
SYNC/MODE  
RUN  
2.2µH  
V
OUT  
0.01  
0.001  
SW  
PGOOD  
2.5V  
LTC3565  
1.25A  
ITH  
RT  
22µF  
22pF  
12.1k  
V
V
V
= 2.7V  
= 3.6V  
= 4.2V  
IN  
IN  
IN  
V
FB  
931k  
294k  
GND  
680pF  
0.0001  
10000  
191k  
0.1  
1
10  
100  
1000  
OUTPUT CURRENT (mA)  
3565 TA01a  
3565 TA01b  
3565fc  
1
For more information www.linear.com/LTC3565  
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