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LTC3569EFE-TRPBF

更新时间： 2024-01-24 07:40:05
品牌 Logo 应用领域
凌特 - Linear 稳压器
页数 文件大小 规格书
24页 399K
描述
Triple Buck Regulator With 1.2A and Two 600mA Outputs and Individual Programmable References

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LTC3569EFE-TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：HVQCCN, LCC20,.11SQ,16
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：7.57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：3.6 V
JESD-30 代码：S-PQCC-N20JESD-609代码：e3
长度：3 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：-40 °C
最大输出电流：2.5 A封装主体材料：PLASTIC/EPOXY
封装代码：HVQCCN封装等效代码：LCC20,.11SQ,16
封装形状：SQUARE封装形式：CHIP CARRIER, 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：3000 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：0.4 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：3 mmBase Number Matches：1

LTC3569EFE-TRPBF 数据手册

 浏览型号LTC3569EFE-TRPBF的Datasheet PDF文件第2页浏览型号LTC3569EFE-TRPBF的Datasheet PDF文件第3页浏览型号LTC3569EFE-TRPBF的Datasheet PDF文件第4页浏览型号LTC3569EFE-TRPBF的Datasheet PDF文件第5页浏览型号LTC3569EFE-TRPBF的Datasheet PDF文件第6页浏览型号LTC3569EFE-TRPBF的Datasheet PDF文件第7页 
LTC3569  
Triple Buck Regulator With  
1.2A and Two 600mA Outputs and  
Individual Programmable References  
DESCRIPTION  
FEATURES  
The LTC®3569 contains three monolithic, synchronous  
step-downDC/DCconverters.Intendedformediumpower  
applications, it operates over a 2.5V to 5.5V input voltage  
range. The operating frequency is adjustable from 1MHz  
to 3MHz, allowing the use of tiny, low cost capacitors and  
inductors. The three output voltages are independently  
programmable by toggling the EN pins up to 15 times,  
loweringthe800mVFBreferencesby25mVpercycle. The  
first buck regulator sources load currents up to 1200mA.  
The other two buck regulators each provide 600mA.  
n
Three Independent Current Mode Buck DC/DC  
Regulators (1.2A and 2x 600mA)  
n
n
Single Pin Programmable V Servo Voltages from  
FB  
800mV Down to 425mV (in 25mV Steps)  
Pull V High to Make Each 600mA Buck a Slave for  
FB  
Higher Current Operation  
Pulse Skip or Burst Mode® Operation  
Programmable Switching Frequency  
(1MHz to 3MHz) or Fixed 2.25MHz  
Synchronizable (1.2MHz to 3MHz)  
n
n
n
n
n
n
n
V Range 2.5V to 5.5V  
IN  
The two 600mA buck regulators can also be configured  
to operate as slave power stages, running in parallel with  
another internal buck regulator to supply higher load  
currents. When operating as parallel, slave output stages,  
discrete external components are shared and available  
output currents sum together.  
All Regulators Internally Compensated  
PGOOD Output Flag  
Quiescent Current <100μA (All Regulators in Burst  
Mode Operation)  
n
n
n
Zero Shutdown Current  
Overtemperature and Short-Circuit Protection  
Tiny 3mm × 3mm 20-Lead QFN and Thermally  
Enhanced TSSOP FE-16 Packages  
L, 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, 6127815, 6304066, 6498466, 6580258, 6611131, 7170195.  
APPLICATIONS  
n
Portable Applications with Multiple Supply Rails  
n
General Purpose Step-Down DC/DC  
n
Dynamic Voltage Scaling Applications  
TYPICAL APPLICATION  
V
Efficiency vs Load Current  
IN  
2.2μH  
OUT1 = 2.5V  
1200mA  
100  
SV  
IN  
PV  
IN  
SW1  
22μF  
V
= 3V  
IN  
20pF  
20pF  
20pF  
510k  
240k  
10μF  
4.7μF  
4.7μF  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
EN1  
EN2  
EN3  
FB1  
V
= 5V  
IN  
LTC3569  
2.5μH  
2.5μH  
OUT2 = 1.8V  
600mA  
SW2  
FB2  
MODE  
300k  
240k  
R
T
PGOOD  
BURST  
PULSE SKIP  
OUT1 = 2.5V  
OUT3 = 1.2V  
600mA  
SW3  
FB3  
150k  
300k  
0.01  
0.1  
1
10  
(mA)  
100 1000 10000  
I
LOAD  
3569 TA01b  
SGND PGND  
3569 TA01a  
3569f  
1
1234567...24

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