CXLD64234系列是一款3A超低损耗线性稳压器。这个产品是特别的设计用于为主板和
NB应用。集成电路需要两个电源电压，一个电路控制电压和一个主电源电压用于功率转换，以减少功耗并提供辍学率低。这个
CXLD64234系列集成了许多功能。上电复位（POR）电路监视两个提供电压以防止错误操作。热关机和电流限制功能保护设备免受过热和电流过载的影响。POK表示输出状态内部设置的时间延迟。它可以控制其他变换器的功率顺序。
CXLD64234系列可由其他电源系统启用。拔出并握住EN销低于0.4V将关闭输出。
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目录
1.产品概述 2.产品特点
3.应用范围 4.下载产品资料PDF文档
5.产品封装图 6.电路原理图
7.功能概述 8.相关产品
一,产品概述(General Description) 
The CXLD64234 series is a 3A ultra low dropout linear regulator. This product is specifically
designed to provide well supply voltage for front-side-bus termination on motherboards and
NB applications. The IC needs two supply voltages, a control voltage for the circuitry and a
main supply voltage for power conversion, to reduce power dissipation and provide extremely
low dropout. The
CXLD64234 series integrates many functions. A Power-On-Reset (POR) circuit monitors both
supply voltages to prevent wrong operations. A thermal shutdown and current limit functions
protect the device against thermal and current over-loads. A POK indicates the output status with
time delay which is set internally. It can control other converter for power sequence.
The CXLD64234 series can be enabled by other power system. Pulling and holding the EN pin
below 0.4V shuts off the output.
The CXLD64234 series is available in DFN 3x3-10L & ESOP-8 package which features small size
as SO-8 and anExposed Pad to reduce the junction-to-case resistance.
二.产品特点(Features)
Ultra Low Dropout 0.21V(typical) @ 2A Output
Current for 1.2V Output Voltage
Low ESR Output Capacitor (Multi-layer ChipCapacitors (MLCC)) Applicable
EN Pull-low for CXLD64234MP-A
EN Pull-high for CXLD64234MP-B
Fast Transient Response
Adjustable Output Voltage by External Resistors
Power-On-Reset Monitoring on Both VCNTL
and VIN Pins
Internal Soft-Start
Current-Limit and Thermal Shutdown Protection
Power-OK Output with a Delay Time
SO-8 with Exposed Pad Pb-Free &
DFN 3x3-10L Package.
Halogen Free Product
三,应用范围 (Applications)
四.技术规格书下载（产品PDF）
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)
六.电路原理图
七,功能概述
CNTL Supply Voltage (VCNTL) --------------------------- -0.3V To 6.5V
Input Supply Voltage (VIN) ------------------------------- -0.3V To 6.5V
EN & FB Pin Voltage (VEN/VFB) ------------------------- -0.3V To VCNTL+0.3V
Power Good Voltage (VPOK) ---------------------------- -0.3V To 6.5V
Power Dissipation (PD) ---------------------------------- 2.5W
Storage Temperature Range (TST) -------------------- -65°C To 150°C
Junction Temperature Range (TJ) --------------------- -40°C To 150°C
Thermal Resistance Junction to Ambient (Rth ja)Note
ESOP-8 ------- 40°C/W
DFN 3x3-10L -----62.5°C/W
Thermal Resistance Junction to Case (Rth jc) Note
ESOP-8 ------- 15°C/W
DFN 3x3-10L 17°C/W
八,相关芯片选择指南 更多同类产品......
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Power IC-LDO: Dual Output,Low Dropout Voltage,Very Low Dropout Voltage |
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Part Number |
Vin max |
Vref (V) |
Vout
|
Max. Current (A) |
Current Limit (A) |
Quies. |
Min. electro lytic capacitor |
MLCC ESR |
Package |
Demo board |
|
6 |
3.6V,3.3V,3.0V,2.8V,2.5V, 1.8V,1.5V |
0.3 |
0.3 |
30 |
1uF |
1uF/ESR> 30mΩ |
SOT89,SOT23 |
no |
||
|
6 |
5.0,3.6V,3.3V,3.1V,3.0V, 2.8V,2.5V,1.8V,1.5V,1.2V |
0.3 |
0.3 |
30 |
1uF |
1uF/ESR> 30mΩ |
SOT23-5 |
yes |
||
|
6 |
3.3V,3.0V,2.8V,2.5V,2.0V, 1.8V,1.5V |
0.6 |
0.6 |
30 |
1uF |
1uF/ESR> 30mΩ |
SOT223,SOT89, SOT23 |
no |
||
|
7 |
1.5V+2.8V,1.8V+2.8V, 1.8V+2.6V,1.8V+3.3V,2.5V+2.8V, 2.8V+1.2V,2.8V+2.8V, 2.8V+3.0V,2.8V+3.3V,2.0V+3.0V, 3.0V+3.3V, 3.3V+3.3V,2.8V+1.5V, 1.8V+3.0V,1.2V+2.8V,1.2V+1.2V |
0.2 |
0.3 |
1 |
4.7uF |
4.7uF |
SOT26,DFN2x2 |
no |
||
|
3.3V+1.2V,2.5V+1.2V,1.2V+1.1V |
0.6 |
0.6 |
30 |
Esposed SOP8 |
||||||
|
6 |
3.3V,3.0V,2.8V,2.5V,1.8V, 1.5V,1.2V,1.0V |
0.6 |
600 |
30 |
1uF |
1uF/50mΩ> ESR>30mΩ |
SOT23-5, SC70-5, SOT223, SOT-89, TO-252 |
yes SOT23-5 |
||
|
6 |
3.3V~1.5V,1.2V(0.1V Steps) |
0.3 |
0.3 |
30 |
1uF |
1uF/50mΩ >ESR>30mΩ |
SOT23, SOT23-5, SC70-4,SC70-5 |
yes SOT23-5 |
||
|
6 |
ADJ |
0.6 |
0.6 |
40 |
1uF/50mΩ >ESR>30mΩ |
SOT23-5, SC70-5 |
yes SOT23-5 |
|||
|
6 |
ADJ |
0.3 |
0.3 |
40 |
SOT23-5, SC70-5 |
yes(SOT23-5) |
||||
|
5.5 |
0.8 |
ADJ |
3 |
3.1 |
10 |
ESR>20mΩ |
Exposed SOP8 |
yes |
||
|
6 |
ADJ |
2 |
2.2 |
2 |
1uF/50mΩ >ESR>30mΩ |
Exposed SOP8 |
yes |
|||
|
5.5 |
0.8 |
ADJ |
3 |
3.1 |
yes |
|||||
|
10 |
1.25 |
ADJ,3.6V,3.3V,3.0V,2.8V, 2.5V,1.8V |
0.3 |
0.42 |
5 |
2.2uF |
2.2uF/ESR <1Ω |
SOT23-5 |
yes (Fixed) |
|
|
10 |
1.25 |
ADJ |
1 |
1.4 |
SOP8 |
no |
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|
10 |
0.8 |
ADJ |
0.3 |
0.32 |
5 |
2.2uF |
2.2uF/ESR <1Ω |
SOT23-5 |
yes |
|
|
27 |
1.25 |
ADJ,5.0V,3.3V,3.0V,2.8V, 2.5V,1.8V |
0.15 |
0.2 |
250 |
2.2uF |
2.2uF/ESR <1Ω |
SOT23-5, SOT89, ESOP-8,J-Lead2021-8 |
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