CXSD61052 nternal synchronous power switches provide high efficiency without
the use of an external Schottky diode. At light loads, regulators operate in low frequency to
maintain high efficiency and low output ripple. Current mode control provides tight load transient response
and cycle-by-cycle current limit.
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目录
1.产品概述 2.产品特点
一,产品概述(General Description)
The CXSD61052 is a current mode monolithic buck switching regulator. Operating with an input
range of 3.6-40V, the CXSD61052 delivers 2A of continuous output current with two integrated N-Channel
MOSFETs.
The CXSD61052 internal synchronous power switches provide high efficiency without
the use of an external Schottky diode. At light loads, regulators operate in low frequency to
maintain high efficiency and low output ripple. Current mode control provides tight load transient response
and cycle-by-cycle current limit.
The CXSD61052 guarantees robustness with short-circuit protection, thermal protection,
start-up current run-away protection, and input under voltage lockout.
The CXSD61052 is available in 8-pin ESOP package, which provides a compact solution with
minimal external components. The package has an exposed pad for low thermal resistance
二.产品特点(Features)
3.6V to 40V operating input range
2A output current
Up to 94% efficiency
High efficiency (>78%) at light load
Internal Soft-Start
Fixed 120kHz Switching frequency
Input under voltage lockout
Available in thermally enhanced ESOP8 package
Start-up current run-away protection
Short circuit protection
Thermal protection
三,应用范围 (Applications)
1.Distributed Power Systems
2.Networking Systems
3.FPGA, DSP, ASIC Power Supplies
4.Green Electronics/ Appliances
5.Notebook Computers
四,下载产品资料PDF文档
需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！
五,产品封装图 (Package)
|
SOP8 |
Name |
Description |
|
1 |
SW |
SW is the switching node that supplies power to the output. Connect the output LC filter from SW |
|
2 |
BST |
Bootstrap pin for top switch. A 0.01uF or larger capacitor should be connected between this pin |
|
3 |
VD |
Output of the internal LDO. A capacitor of 2.2uF or larger should be connected at VD to ground. |
|
4 |
FB |
Output feedback pin. FB senses the output voltage and is regulated by the control loop to 0.8V. |
|
5 |
NC |
|
|
6 |
NC |
|
|
7 |
EN |
Drive EN pin high to turn on the regulator and low to turn off the regulator. |
|
8 |
VIN |
Input voltage pin. VIN supplies power to the IC. Connect a 3.6V to 40V supply to VIN and bypass |
|
9 |
GND |
Ground. |
六.电路原理图
七,功能概述
|
Item |
Symbol |
Condition |
Min. |
Typ. |
Max. |
Units |
||||||
|
VIN Undervoltage Lockout |
VIN_MIN |
VIN falling |
3.6 |
V |
||||||||
|
VIN Undervoltage Lockout |
VIN_MIN_HYST |
VIN rising |
160 |
mV |
||||||||
|
Shutdown Supply Current |
ISD |
VEN=0V |
0.07 |
μA |
||||||||
|
Supply Current |
IQ |
VEN=5V, VFB=1V |
74 |
μA |
||||||||
|
Feedback Voltage |
VFB |
3.6V<VVIN<40V |
0.8 |
V |
||||||||
|
Error Amplifier |
GEA |
Vcomp = 1.5V |
250 |
uA/V |
||||||||
|
Maximum COMP Sourcing |
ICOMP_MAX_OUT |
Vcomp = 1V |
25 |
uA |
||||||||
|
Maximum COMP Sinking |
ICOMP_MAX_IN |
Vcomp = 3V |
25 |
uA |
||||||||
|
Top Switch Resistance |
RDS(ON)T |
126 |
mΩ |
|||||||||
|
Bottom Switch Resistance |
RDS(ON)B |
63 |
mΩ |
|||||||||
|
Top Switch Leakage Current |
ILEAK_TOP |
VIN=40V, VEN=0V, |
0.2 |
uA |
||||||||
|
Bottom Switch Leakage |
ILEAK_BOT |
VIN= VSW = 40V, VEN=0V |
0.7 |
uA |
||||||||
|
Top Switch Current Limit |
ILIM_TOP |
Minimum Duty Cycle |
4.5 |
A |
||||||||
|
Switch Frequency |
FSW |
RRT = 180k |
120 |
kHz |
||||||||
|
Minimum On Time |
TON_MIN |
117 |
ns |
|||||||||
|
Minimum Off Time |
TOFF_MIN |
VFB=0V |
112 |
ns |
||||||||
|
EN shut down threshold |
VEN_TH |
VEN falling, FB=0V |
1.2 |
V |
||||||||
|
EN shut down hysteresis |
VEN_HYST |
VEN rising, FB=0V |
120 |
mV |
||||||||
|
Thermal Shutdown |
TTSD |
132 |
°C |
|||||||||
八,相关产品 更多同类产品......
|
高压同步DC-DC降压IC |
|||||||||
|
型号 |
输入耐压 |
输出电压 |
输出电流 |
反馈电压 |
工作频率 |
效率 |
静态工 作电流 |
待机电流 |
封装 |
|
8V-35V |
可调输出 带线损补偿 |
2A/带可调恒流设置 |
1.21V |
130K |
95% |
1.3mA |
112uA |
SOP-8 |
|
|
8V-35V |
可调输出/带线损 补偿带使能端 |
2A/带可调恒流设置 |
1.21V |
130K |
93% |
1.3mA |
SOP-8 |
||
|
4.5-20V |
可调输出 |
2.0A |
0.923V |
340K |
95% |
1mA |
6uA |
SOP-8 |
|
|
4.5-27V |
可调输出 |
2.0A/2.5A |
0.925V |
340K |
96% |
1.3mA |
0.3uA |
SOP-8 |
|
|
8V--35V |
可调输出 带线损补偿 |
2.0A/带可调限流保护 |
1.2V |
100-500K |
93% |
750uA |
110uA |
ESOP-8 |
|
|
10V--35V |
可调输出 带线损补偿 |
2.5A/带可调限流保护 |
1.2V |
100-500K可调 |
93% |
15mA |
110uA |
SOP-8 |
|
|
8V-35V |
可调输出 带线损补偿 |
2.8A/带可调限流保护 |
1.21V |
100-500K可调 |
93% |
15mA |
110uA |
SOP-8 |
|
|
8V-35V |
可调输出 带线损补偿 |
3.2A/带可调限流保护 |
1.21V |
100-500K可调 |
93% |
15mA |
110uA |
SOP-8 |
|
|
4.6-22V |
可调输出 |
3.0A |
0.923V |
340K |
95% |
55uA |
1uA |
ESOP8 |
|
|
4.5-27V |
可调输出 |
3.0A |
0.925V |
340K |
93% |
1.3mA |
0.3uA |
ESOP8 |
|
|
4.5V-23V |
可调输出 |
3.5A |
0.925V |
340K |
96% |
2.5mA |
ESOP-8 |
||
|
8V-35V |
可调输出 带线损补偿 |
扩流4.5A带 可调限流保护 |
1.21V |
100-500K可调 |
95% |
14mA |
100uA |
ESOP8 |
|
|
3.6-40V |
可调输出 |
2.0A |
0.8V |
440K |
94% |
74uA |
0.07uA |
ESOP-8 |
|
|
4.5-20V |
可调输出 |
4.0A |
0.923V |
340K |
95% |
1.6mA |
6uA |
ESOP8 |
|
|
3.5-23V |
可调输出 |
2.0A |
0.6V |
600K |
96% |
400uA |
1uA |
SOT-26 |
|
|
4.5-17V |
可调输出 |
2.0A |
0.6V |
600K |
96% |
400uA |
1uA |
SOT-26 |
|
|
4.5V-23V |
可调输出 |
2.0A |
0.8V |
600K |
92% |
800uA |
SOT-26 |
||
|
3.3-17V |
可调输出 |
2.0A |
0.6V |
600K |
96% |
400uA |
4uA |
SOT-26 |
|
|
4.5-26V |
可调输出 |
1.2A |
0.8V |
1.4M |
94% |
600uA |
1uA |
SOT-26 |
|
|
4.0-42V |
可调输出 |
1.5A |
0.8V |
650K |
91% |
600uA |
6uA |
SOT-26 |
|
|
|||||||||||||||||
