The CXLD6471 is designed for portable RF and wireless applications
with demanding perfor-mance and space requirements. The CXLD6471
performance is optimized for battery-powered systems to deliver ultra
low noise and low quiescent current. A noise bypass pin is available for
further reduction of output noise.Regulator ground current increases
only slightly in dropout, further prolonging the battery life. The
CXLD6471 also works with low-ESR ceramic capacitors, reducing
the amount of board space necessary for power applications, critical
in hand-held wireless devices. The CXLD6471 consumes less than 0.01
μA 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 of SC-70, SOT-23 packages.
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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 CXLD6471 is designed for portable RF and wireless applications
with demanding perfor-mance and space requirements. The CXLD6471
performance is optimized for battery-powered systems to deliver ultra
low noise and low quiescent current. A noise bypass pin is available for
further reduction of output noise.Regulator ground current increases
only slightly in dropout, further prolonging the battery life. The
CXLD6471 also works with low-ESR ceramic capacitors, reducing
the amount of board space necessary for power applications, critical
in hand-held wireless devices. The CXLD6471 consumes less than 0.01
μA 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 of SC-70, SOT-23 packages.
二.产品特点(Features)
Ultra-low Noise for RF Application
Ultra-Fast Response in Line/Load Transient
Quick Start-Up (Typically 50μS) <0.01μA 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 1μF 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
MP3/MP4/MP5 Players
Portable Information Appliances
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) |
∆VOUT |
VIN=3.6V, IOUT=1mA |
-1 |
+1 |
% |
||
|
-2 |
+2 |
||||||
|
Current Limit |
|||||||
|
ILIM |
RLOAD=1Ω |
400 |
430 |
mA |
|||
|
Quiescent Current |
IQ |
VEN>1.2V, IOUT=0mA |
90 |
130 |
μA |
||
|
Dropout Voltage |
VDROP |
IOUT=200mA, VOUT=2.8V |
130 |
180 |
mV |
||
|
IOUT=300mA, |
210 |
300 |
|||||
|
(Note 7) |
|||||||
|
∆VLINE |
VIN=3.6V to 5.5V IOUT=1mA |
0.05 |
0.17 |
%/V |
|||
|
(Note 8) Load Regulation |
∆VLOAD |
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 |
μA |
||
|
EN Input Bias Current |
IIBSD |
VEN=GND or VIN |
0 |
100 |
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 COUT=1uF |
100 |
μVRMS |
|||
|
Power Supply Rejection Ratio |
f=217Hz |
PSRR |
Cout=1uF, Iout=100mA |
-80 |
dB |
||
|
f=1KHz |
-78 |
||||||
|
f=10KHz |
-65 |
||||||
|
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 |
||||
