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.
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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 |
||||
|
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 |
||
