CXLD6473设计用于便携式射频和无线具有高性能和空间要求的应用程序。
CXLD6473性能针对电池供电系统进行了优化提供超低噪音和低静态电流。
调节器接地电流仅在下降时略微增加，进一步延长了电池寿命生活。
CXLD6473还可与低ESR陶瓷电容器配合使用，从而降低电源应用所需的板
空间量，在手持无线设备。
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目录
1.产品概述 2.产品特点 3.应用范围 4.技术规格书下载（产品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 CXLD6473 is designed for portable RF and wireless
applications with demanding perfor-mance and space requirements.
The CXLD6473 performance is optimized for battery- powered systems
to deliver ultra low noise and low quiescent current. Regulator ground
current increases only slightly in dropout, further prolonging the battery
life. The CXLD6473 also works with low-ESR ceramic capacitors,reducing
the amount of board space necessary for power applications, critical in
hand-held wireless devices. The CXLD6473 consumes less than 0.01μA in
shutdown mode and has fast turn-on time less than 50μs. The other
features include ultra low dropout voltage, high output accuracy,current
limiting protection, and high ripple rejection ratio. Available in the 5-lead
SC-70 and SOT-23 packages.
二.产品特点(Features)
Ultra-low Noise for RF Application
Ultra-Fast Response in Line/Load Transient
<0.01mA Standby Current When Shutdown
Low Dropout:210mV@300mA
Wide Operating Voltage Ranges:2V to 6V
TTL-logic-Controlled Shutdown Input
Low Temperature Coefficient
Current Limiting Protection
Thermal Shutdown Protection
Only 1mF Output Capacitor Required for Stability
High Power Supply Rejection Ratio
Custom Voltage Available
Fast output discharge
Available in 5-Lead SOT-23 and SC-70 Package
三,应用范围 (Applications)
Cellular and Smart Phones
Battery-Powered Equipment
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
PCMCIA Cards
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
|
Parameter |
Symbol |
Conditions |
MIN |
TYP |
MAX |
unit |
|
|
Input Voltage |
VIN |
2 |
6 |
V |
|||
|
Output Voltage Accuracy (Note 6) |
DVOUT |
VIN=3.6V, IOUT=1mA |
-1 |
+1 |
, % |
||
|
-2 |
+2 |
||||||
|
Current Limit |
|||||||
|
ILIM |
RLOAD=1W |
400 |
430 |
mA |
|||
|
Quiescent Current |
IQ |
VEN>1.2V, IOUT=0mA |
90 |
130 |
mA |
||
|
Dropout Voltage |
VDROP |
IOUT=200mA, VOUT=2.8V |
130 |
180 |
mV |
||
|
IOUT=300mA, |
210 |
300 |
|||||
|
(Note 7) |
|||||||
|
ΔVLINE |
VIN=3.6V to 5.5V IOUT=1mA |
0.05 |
0.17 |
%/V |
|||
|
(Note 8) Load Regulation |
ΔVLOAD |
1mA<IOUT<300mA |
2 |
%/A |
|||
|
(Note 9) Output Voltage Temperature Coefficient |
TCVOUT |
IOUT=1mA |
±60 |
ppm/℃ |
|||
|
Standby Current |
ISTBY |
VEN=GND, Shutdown |
0.01 |
1 |
mA |
||
|
EN Input Bias Current |
IIBSD |
VEN=GND or VIN |
500 |
nA |
|||
|
EN Input Threshold |
Logic Low |
VIL |
VIN=3V to 5.5V, Shutdown |
0.4 |
V |
||
|
Logic High |
VIH |
VIN=3V to 5.5V, Start up |
1.2 |
V |
|||
|
Output Noise Voltage |
eNO |
10Hz to100KHz, IOUT=200mA |
100 |
mVRMS |
|||
|
Power Supply Rejection Ratio |
f=217Hz |
PSRR |
IOUT=100mA |
-78 |
dB |
||
|
f=1KHz |
-72 |
||||||
|
f=10KHz |
-52 |
||||||
|
Thermal Shutdown |
|||||||
|
TSD |
Shutdown, Temp increasing |
165 |
℃ |
||||
|
Thermal Shutdown Hysteresis |
TSDHY |
30 |
℃ |
||||
八,相关芯片选择指南
|
CMOS型低压差线性稳压器(CMOS Type LDO Linear Regulator ) |
||||||||
|
Part No. |
VIN |
VOUT |
Accu. |
PSRR |
IQ |
IOUT(Max) |
Package |
Features |
|
36V |
3.3,5,12V, ADJ |
±2% |
10μA |
150mA |
SOT89-3 TO92 |
HV Three-Terminal Positive Regulator |
||
|
1.5~8V |
1.1~5.5V |
±2% |
1μA |
200mA |
SOT23-3 SOT89-3 TO92 |
Low Power Consumption,Low Dropout Voltage |
||
|
Max 16V |
1.1~5.0V |
±2% |
2μA |
250mA |
SOT23-3 SOT23-5 SOT89-3 |
Low Power Consumption,Low Dropout Voltage |
||
|
Max 16V |
1.2~5.0V |
±2% |
3μA |
250mA |
SOT23-3 SOT89-3 |
Low Power Consumption,Low Dropout Voltage |
||
|
Max 8V |
1.2~6V |
±2%/±1% |
3μA |
250mA |
SOT89-3 SOT23-3 TO92 |
Low Dropout Voltage, Low lq |
||
|
Max 6V |
2~6V |
±2% |
74dB@100Hz |
35μA |
300mA |
DFN1x1 - 4L SC70-5,SOT23-5 |
Low Noise, High PSRR |
|
|
Max 6V |
1.5~4.5V |
±2% |
73dB@100Hz |
35μA |
300mA |
DFN1x1 - 4L SOT23-5 SC70-5,SOT23-3 |
Low Noise, High PSRR, Output Discharge |
|
|
Max 6V |
1.0~4.5V |
±2% |
70dB@100Hz |
35μA |
300mA |
SOT23-5 SC70-5 |
Low Noise, High PSRR, Output Discharge |
|
|
2~6V |
1.2~5V,ADJ |
±2%/±1% |
80dB@217Hz 78dB@1KHz |
90μA |
300mA |
SOT23-5 SC70-5 |
RF LDO, Ultra Low Noise, High PSSR, Output Discharge |
|
|
2~6V |
1.2~5V |
±2%/±1% |
78dB@217Hz |
90μA |
300mA |
SOT23-3 SOT89-3 SOT223-3 |
Ultra Fast, Ultra Low Noise, High PSSR, Output Discharge |
|
|
2~6V |
1.2~5V |
±2%/±1% |
78dB@217Hz |
90μA |
300mA |
SOT23-5 SC70-5 |
RF LDO, Ultra Low Noise, High PSSR, Output Discharge |
|
|
2~6V |
1.2~5V |
±2%/±1% |
70dB@1KHz |
90μA x 2 |
300mA x 2 |
SOT23-6 ESOP8 |
Dual Channels LDO, Output Discharge |
|
|
Max 6V |
1.5~4.5V |
±2%/±1% |
73dB@100Hz |
20μA x 2 |
300mA x 2 |
SOT23-6 |
Dual Channels LDO, Output Discharge |
|
|
4.75~40V |
1.8~10V |
±2% |
6μA |
500mA |
SOT89-3 |
HV, Low Power Consumption, Low Dropout Voltage |
||
|
4.75~40V |
1.8~10V |
±2% |
6μA |
500mA |
SOT89-3 |
HV, Low Power Consumption, Low Dropout Voltage |
||
|
Max 8V |
1.2~4.5V |
±2%/±1% |
66dB@100Hz |
75μA |
500mA |
SOT89-3 SOT23-5 |
Low Noise, High PSRR,Output Discharge |
|
|
Max 6V |
1.5~4.5V |
±2% |
73dB@100Hz |
20μA |
500mA |
SOT89-3 |
Low Noise, Low Dropout, High PSRR, Output Discharge |
|
|
Max 6V |
1.2~4.5V |
±2% |
72dB@1KHz |
30μA |
500mA |
SC70-5 SOT23-5 |
Low Noise, High PSRR Fast Response, Output Discharge |
|
|
Max 6V |
1.2~4.5V |
±2% |
72dB@1KHz |
30μA x 2 |
500mA x 2 |
SOT23-6 |
Dual Channels LDO |
|
|
2.5~6V |
1.0~5.0V |
±2%/±1% |
70dB@100Hz |
70μA |
1A |
SOT223-3 TO252-3 |
1A Very Low Dropout Low Noise High PSRR |
|
|
Max 6V |
1.2~5.0V |
±2% |
100μA |
1A |
SOT89-3 SOT23-5 |
Low Noise, Low Dropout, High PSRR |
||
|
Max 6V |
1.2~5.0V |
±2% |
100μA |
1.5A |
SOT223 |
Low Noise, Low Dropout, High PSRR |
||
|
Max 18V |
1.2~5.0V |
±2% |
3μA |
2A |
SOT223 TO252 |
2A Low Dropout , Low lq |
||
|
Max 18V |
1.2~5.0V |
±2% |
3μA |
2A |
SOT223 TO252 |
2A Low Dropout , Low lq |
||
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