产品信息查询
产品 新闻
首页 > 产品中心 > MCU存储ADC时钟数据线 > PMU >CXPC3348电源管理单元PMU 2个同步块和2个CMOS低功耗Buck输出电流为1.5A每个LDO的输出电流为0.5A同步buck高效单片同步降压调节器恒定频率电流模式架构
CXPC3348电源管理单元PMU 2个同步块和2个CMOS低功耗Buck输出电流为1.5A每个LDO的输出电流为0.5A同步buck高效单片同步降压调节器恒定频率电流模式架构
0

CXPC3348是一个电源管理单元(PMU),具有2个同步块和2个CMOS低功耗提供最大Buck输出电流为1.5A,最大每个LDO的输出电流为0.5A。同步buck是一种高效的单片同步降压调节器恒定频率,电流模式架构。该设备有可调版本。空载供电电流为40uA,降至<1uA停机。2.5V至6V输入电压范围使CXPC3348非常适合单锂离子电池供电的应用。100%关税
循环提供低辍学操作,延长便携式系统的电池寿命。脉宽调制/功率因数调制模式操作提供非常低的输出纹波电压适用于噪声敏感应用。切换频率内部设置为1.5MHz,允许使用小型表面贴装电感和电容器。低输出电压很容易支持0.6V反馈参考电压。
两个LDO中的每一个都是低压差调节器
提供最大电流0.5A个
输出。负载电流为0.5A时的典型电压降
是0.8V。它们有很好的负载和线路瞬态
响应和良好的温度特性,
保证芯片和电源的稳定性
系统。设置每个通道的输出精度在2%以内。
典型的LDO输出电压:VO1=1.2V,VO2=1.8V。
其他固定电压可在
每0.1V步进1.0V~4.5V。也可以是
根据命令定制。ldo也可以工作
在1.8V到6V的宽输入电压下。
可提供折叠短路保护
输出电流限制功能。
CXPC3348提供无铅(Pb)QFN3x3-16
(带外露散热垫)包装。

CXPC3348电源管理单元PMU 2个同步块和2个CMOS低功耗Buck输出电流为1.5A每个LDO的输出电流为0.5A同步buck高效单片同步降压调节器恒定频率电流模式架构
产品手册
产品订购

产品订购

产品简介

目录

  1. 1.产品概述       2.产品特点     qEF嘉泰姆

  2. 3.应用范围       4.技术规格书下载(PDF文档)qEF嘉泰姆

  3. 5.产品封装       6.电路原理图  qEF嘉泰姆
    7.相关产品qEF嘉泰姆

产品概述

返回TOP


     The CXPC3348 is a power management unit (PMU), with 2 synchronous Bucks and 2 CMOS low-dropout regulators that delivers a maximum current of 1.5A for Buck’s output and a maximum current of 0.5A for each individual LDO’s output.qEF嘉泰姆
The synchronous buck is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to <1uA in shutdown. The 2.5V to 6V input voltage range makes the CXPC3348 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple voltage for noise sensitive applications. Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.qEF嘉泰姆
Each of the 2 LDOs is low-dropout regulator that delivers a maximum current of 0.5A individual output. Typical dropout voltage at 0.5A load current is 0.8V. They have excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. The output accuracy of each channel is set within 2% by trimming.qEF嘉泰姆
Typical LDO output voltage: VO1=1.2V, VO2=1.8V.qEF嘉泰姆
Other fixed voltage can be provided in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. LDOs can also work under a wide input voltage ranging from 1.8V to 6V. They can provide foldback short-circuit protection and output current limit function.qEF嘉泰姆
CXPC3348 is available in lead (Pb)-free QFN3x3-16

   产品特点 返回TOPqEF嘉泰姆


 High Efficiency : Up to 96%qEF嘉泰姆

  • Capable of Delivering 1.5A
  • 1.5MHz Switching Frequency
  • No External Schottky Diode Needed
  • Low dropout 100% Duty operation
  • PFM Mode for High Efficiency in Light Load
  • Over temperature Protected
  • Low Quiescent Current: 40μA
  • Short Circuit Protection
  • Inrush Current Limit and Soft Start
  • LDO
  • Max output current for each channel is 0.5A
  • Input voltage range: 1.8 – 6V
  • Output voltage range: 1.0V~4.5V (customized on command every 0.1V step)
  • Low power consumption: 50uA (Typ.)
  • Low output noise (47uVRMS)
  • Standby Mode: 0.1uA
  • Low dropout voltage:
  • 600mV@IO1=250mA, VO1=1.2V
  • 800mV@IO2=500mA, VO2=1.8V
  • High ripple rejection:65dB@1KHz (Typ.)
  • Low temperature coefficient: ±100ppm/C
  • Excellent line regulation: 0.05%/V
  • Highly accurate: ±2%
  • Output current limit
  • Fold-back short circuit current

   应用范围 返回TOPqEF嘉泰姆


    Distributed Power SystemsqEF嘉泰姆
 Digital Set Top BoxesqEF嘉泰姆
 Flat Panel Television and MonitorsqEF嘉泰姆
 Wireless and DSL ModemsqEF嘉泰姆
 Power source for cellular phones and various kind of PCSsqEF嘉泰姆
 Battery Powered equipment
qEF嘉泰姆

   技术规格书(产品PDF) 返回TOP qEF嘉泰姆


     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qEF嘉泰姆
      
QQ截图20160419174301.jpgqEF嘉泰姆
   产品封装图 返回TOP
qEF嘉泰姆


  qEF嘉泰姆
   电路原理图 返回TOP
qEF嘉泰姆


   qEF嘉泰姆
  相关芯片选择指南 返回TOP
qEF嘉泰姆

源管理,可定制(PMU)
Part No. Configuration MODE VIN IQ FOSC Eff. FB Voltage IOUT Package
CXPC3343/B 1x 1A Sync Buck 2x 1A LDO PWM/PFM Buck 7V; LDO 12V Buck 50μA, LDO 2mA 1.5MHz 97% 0.6V DC/DC: 1A  LDO: 1A DFN3x3-12L 
CXPC3344 1 x 18V/2A Buck 1 x 6V/1.5A LDO PWM/PFM Buck 18V; LDO 6V Buck 0.8mA, LDO 100μA 500KHz 96% 0.8V DC/DC: 2A  LDO: 1.5A ESOP8  DFN2x3-8
CXPC3345 1 x 18V/2A Buck 2 x 6V/1.5A LDO PWM/PFM Buck 18V; LDO 6V Buck 0.8mA, LDO 100μA 500KHz 96% 0.8V DC/DC: 2A  LDO: 1.5A DFN3x3-12
CXPC3346 1 x 6V/1.5A Buck 2 x 6V/0.5A LDO PWM/PFM Buck 6V; LDO 6V Buck 40μA, LDO 35μA 1.5MHz 96% 0.6V DC/DC: 1.5A LDO: 0.5A ESOP8
CXPC3347 1 x 7V/1A Buck  1 x 6V/0.5A LDO PWM/PFM Buck 7V; LDO 6V Buck 50μA, LDO 35μA 1.5MHz 97% 0.6V DC/DC: 1A  LDO: 0.5A DFN2x2-8
CXPC3348 2 x 6V/1.5A Buck  2 x 6V/0.5A LDO PWM/PFM Buck 6V; LDO 6V Buck 40μA, LDO 35μA 1.5MHz 96% 0.6V DC/DC: 1.5A LDO: 0.5A QFN3x3-16