CXLD64239B超低噪声优化设计的高效CMOS线性稳压器高输出精度极低压差低静态电流和快速启动等特性

CXLD64239B是一款为超低噪声优化设计的高效CMOS线性稳压器，它还具有高输出精度、极低压差、低静态电流和快速启动等特性。CXLD64239B输出很低的噪声电压，应用于需要干净电压源的RF电路是非常理想的，一个旁路噪声的引脚可以用来大大地降低输出噪声。 这款器件为手持式和电池供电的设备特别设计，它提供了与TTL逻辑兼容的使能控制引脚，当使能关断时，功耗下降至几乎为零。CXLD64239B采用SOT23-5封装，它可以在使用低ESR的陶瓷电容时正常工作，大大节省了PCB板空间，这对手持式无线设备是非常重要的。CXLD64239B能提供很宽范围的输出电压。关键特性还包括电流限制、过温关断保护和快速瞬态响应。

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（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

CXLD64239B是一款为超低噪声优化设计的高效CMOS线性稳压器，它还具有高输出精度、极低压差、低静态电流和快速启动等特性。CXLD64239B输出很低的噪声电压，应用于需要干净电压源的RF电路是非常理想的，一个旁路噪声的引脚可以用来大大地降低输出噪声。 这款器件为手持式和电池供电的设备特别设计，它提供了与TTL逻辑兼容的使能控制引脚，当使能关断时，功耗下降至几乎为零。CXLD64239B采用SOT23-5封装，它可以在使用低ESR的陶瓷电容时正常工作，大大节省了PCB板空间，这对手持式无线设备是非常重要的。CXLD64239B能提供很宽范围的输出电压。关键特性还包括电流限制、过温关断保护和快速瞬态响应。

The CXLD64239B is an efficient, CMOS voltage regulator optimized for ultra-low-noise applications. It offers high output accuracy, extremely low dropout voltage low ground current and fast start-up time. The CXLD64239B provides a very low noise output, ideal for RF applications where a clean voltage source is required. A noise bypass pin is also available for further reduction of output noise. Designed specifically for handheld and batterypowered devices, the CXLD64239B provides a TTL-logic-compatible enable pin. When disabled, power consumption drops nearly to zero. The CXLD64239B also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. Available in the SOT23-5 package, the CXLD64239B offers a wide range of output voltages. Key features include current limit, thermal shutdown and faster transient response.

   产品特点 返回TOP

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   • SOT23-5封装

• 2.5V至5.5V输入电压范围

• 50μVrms输出噪声

• 150mA负载时140mV低压差

• 在1kHz时，达到75dB的PSRR

• 70μA低地电流

• 能提供150mA输出电流

• 稳定工作于1μF陶瓷电容

• 优异的负载和电源瞬态响应

• 热关断和电流限制保护

• 输出电压：1.2V、1.5V、1.8V、2.5V、2.8V、2.85V、2.9V、3.0V、3.3V 和可调输出电压

• 符合RoHS规范及Pb-Free

z 5-pin SOT23-5 Package

z 2.5V to 5.5V Input Voltage Range

z 50μV(rms) Output Noise

z 140mV Dropout @ 150mA

z 75dB PSRR at 1kHz

z Low 70μA Ground Current

z 150mA Output Current

z Stability with 1μF Ceramic Output Capacitors

z Excellent Load/Line Transient

z Thermal Shutdown and Current Limit Protection

z Available in 1.2V,1.5V,1.8V,2.5V,2.8V,2.85V, 2.9V,3.0V,3.3V,4.8V and Adjustable Voltages z RoHS Compliant and 100% Lead (Pb)-Free

   应用范围 返回TOP

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 • 蜂窝电话

• 蓝牙便携式设备

• PDA、掌上型电脑

• 个人消费电子

z Cellular Phones

z Bluetooth Portable Radios and Accessories

z PDA and Palmtop Computers

z Consumer/Personal Electronics

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

电路原理图 返回TOP

 

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低漏失线性稳压器
Part   Number	remark	Iout (mA)	Vin (V)	Vout (V)	Dropout (mV)	IQ (A)	PSRR (dB)	POR / Fault / Error	Package
CXLD64239B	150mA  Low-Noise LDO in SOT23-5	150	2.5 ~ 5.5	1.2~4.8	140	70μA	75	No	SOT23-5
CXLD64240	150mA  Low-Noise LDO in SC-82   Without A Bypass Capacitor	150	2.5~5.5	1.2~3.6	90	30uA	70	NO	SC-82
CXLD64241	Dual,Low-Noise, High-PSRR, 150mA LDO without Bypass Capacitor	150/150	2.5~5.5	1.2~3.6	190	50μA	70	No	TDFN-6,TSOT23-6
CXLD64242	300mA High PSRR Low-Noise LDO	300	2.5~5.5	1.2~4.8	250	70μA	75	No	SC-70,SOT23-5
CXLD64243	300mA Low-Noise Low-Dropout Linear Regulator	300	2.5~5.5	1.2~3.3	150	84μA	65	No	SOT23-5
CXLD64244	300mA Low Dropout Linear Regulator	300	2.5~5.5	1.2~3.5	170	90μA	-	No	SOT23-3 SOT-89
CXLD64245	A300mA Low-Noise LDO Without Bypass Capacitor	300	2.5~5.5	1.2~3.6	200	30μA	70	No	SOT23-5
CXLD64246	Dual, Low-Noise, High-PSRR, 300mA LDO without Bypass Capacitor	300/300	2.5~5.5	1.2~3.6	380	50μA	70	No	TDFN-6,TSOT23-6,SOP-8(EP)
CXLD64247	Low-Noise, High-PSRR, 600mA LDO with PGOOD Indication	600	2.5~5.5	0.8~5	360	80μA	68	Yes	TDFN-6
CXLD64248	600mA High PSRR Low Dropout Linear Regulator	600	2.5~5.5	0.8~5	300	120μA	70	No	SOT23-5
CXLD64249	1A Ultra Low-Dropout Linear Regulator	1000	2.5~5.5	1.5~3.3	300	300μA	60	Yes	SOT-223,SOP-8,SOT-89
CXLD64250	2A Ultra Low-Dropout Linear Regulator	2000	2.5~6	1.5~3.3	600	1mA	56	Yes	TO220,TO263,SOP-8 (EP)
CXLD64251	2A Low Dropout Linear Regulator with Programmable Soft-Start	2000	2.7~5.5	0.8~3.3	165	0.8mA	60	Yes	SOP-8
CXLD64252	600mA High PSRR Low Dropout Linear Regulator	600	2.5~5.5	0.8~3.6	300	120μA	70	No	SOT23-5