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LTC3605AEUF#PBF PDF预览

LTC3605AEUF#PBF

更新时间： 2024-02-04 01:32:35
品牌 Logo 应用领域
凌特 - Linear 开关
页数 文件大小 规格书
22页 414K
描述
LTC3605A - 20V, 5A Synchronous Step-Down Regulator; Package: QFN; Pins: 24; Temperature Range: -40°C to 85°C

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LTC3605AEUF#PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN,
针数：24Reach Compliance Code：compliant
风险等级：2.19模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE最大输入电压：20 V
最小输入电压：4 V标称输入电压：12 V
JESD-30 代码：S-PQCC-N24JESD-609代码：e3
长度：4 mm功能数量：1
端子数量：24最高工作温度：125 °C
最低工作温度：-40 °C标称输出电压：3.3 V
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
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）：NOT SPECIFIED座面最大高度：0.8 mm
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
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

LTC3605AEUF#PBF 数据手册

 浏览型号LTC3605AEUF#PBF的Datasheet PDF文件第2页浏览型号LTC3605AEUF#PBF的Datasheet PDF文件第3页浏览型号LTC3605AEUF#PBF的Datasheet PDF文件第4页浏览型号LTC3605AEUF#PBF的Datasheet PDF文件第5页浏览型号LTC3605AEUF#PBF的Datasheet PDF文件第6页浏览型号LTC3605AEUF#PBF的Datasheet PDF文件第7页 
LTC3605A  
20V, 5A Synchronous  
Step-Down Regulator  
FeaTures  
DescripTion  
The LTC®3605A is a high efficiency, monolithic synchro-  
nous buck regulator using a phase lockable controlled  
on-time constant frequency, current mode architecture.  
PolyPhase operation allows multiple LTC3605A regula-  
tors to run out of phase while using minimal input and  
output capacitance. The operating supply voltage range  
is from 20V down to 4V, making it suitable for dual, triple  
or quadruple lithium-ion battery inputs as well as point  
of load power supply applications from a 12V or 5V rail.  
n
High Efficiency: Up to 96%  
n
5A Output Current  
n
4V to 20V V Range  
IN  
n
Integrated Power N-Channel MOSFETs  
(70mΩ Top and 35mΩ Bottom)  
n
n
n
n
n
Adjustable Frequency 800kHz to 4MHz  
PolyPhase® Operation (Up to 12 Phases)  
Output Tracking  
0.6V 1% Reference Accuracy  
Current Mode Operation for Excellent Line and Load  
Transient Response  
Shutdown Mode Draws Less Than 15µA Supply Current  
LTC3605: 15V Absolute Maximum V  
LTC3605A: 22V Absolute Maximum V  
The LTC3605A Is Pin Compatible with the LTC3605  
Available in 24-Pin (4mm × 4mm) QFN Package  
Theoperatingfrequencyisprogrammablefrom800kHzto  
4MHz with an external resistor. The high frequency capa-  
bility allows the use of small surface mount inductors. For  
switching noise sensitive applications, it can be externally  
synchronized from 800kHz to 4MHz. The PHMODE pin  
allows user control of the phase of the outgoing clock  
signal. The unique constant frequency/controlled on-time  
architecture is ideal for high step-down ratio applications  
that are operating at high frequency while demanding  
fast transient response. Two internal phase-lock loops  
synchronize the internal oscillator to the external clock  
and also servos the regulator on-time to lock on to either  
the internal clock or the external clock if it’s present.  
n
n
n
n
n
IN  
IN  
applicaTions  
n
Point of Load Power Supply  
n
Portable Instruments  
n
Distributed Power Systems  
Battery-Powered Equipment  
L, LT, LTC, LTM, PolyPhase, OPTI-LOOP, Linear Technology and the Linear logo are registered  
trademarks of Linear Technology Corporation. All other trademarks are the property of their  
respective owners. Protected by U.S. Patents, including 5481178, 5847554, 6580258, 6304066,  
6476589, 6774611.  
n
Typical applicaTion  
Efficiency and Power Loss  
High Efficiency 1MHz, 5A Step-Down Regulator  
100  
90  
10  
1
V
= 3.3V  
OUT  
V
IN  
4V TO 20V  
80  
22µF  
×2  
PV  
SV  
IN  
IN  
70  
CLKOUT INTV  
CC  
60  
50  
2.2µF  
1µH  
CLKIN  
BOOST  
PGOOD  
0.1µF  
40  
30  
20  
10  
0
LTC3605A  
V
OUT  
SW  
0.1  
0.01  
3.3V  
V
11.5k  
2.55k  
ON  
FB  
47µF  
V
RUN  
V
V
V
= 8V  
= 12V  
= 20V  
IN  
IN  
IN  
IN  
×2  
ITH  
RT  
16k  
PGND  
0.01  
0.1  
1
10  
162k  
220pF  
LOAD CURRENT (A)  
3605A TA01b  
3605A TA01a  
3605afg  
1
For more information www.linear.com/LTC3605A  
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