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The CXPC3346 is a power management unit (PMU), with 1 synchronous Buck 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.wB0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 CXPC3346 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.wB0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.wB0嘉泰姆
Typical LDO output voltage: VO1=2.8V, VO2=1.8V.wB0嘉泰姆
Other fixed voltage can be provided in the range of 1.2V~4.5V every 0.1V step. It also can be customized on command. LDOs can also work under a wide input voltage ranging from 2V to 6V. They can provide foldback short-circuit protection and output current limit function.wB0嘉泰姆
CXPC3346 is available in lead (Pb)-free ESOP-8(with exposed pad for heat dissipation) package.

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High Efficiency : Up to 96%wB0嘉泰姆
Capable of Delivering 1.5AwB0嘉泰姆
1.5MHz Switching FrequencywB0嘉泰姆
No External Schottky Diode NeededwB0嘉泰姆
Low dropout 100% Duty operationwB0嘉泰姆
PFM Mode for High Efficiency in Light LoadwB0嘉泰姆
Over temperature ProtectedwB0嘉泰姆
Low Quiescent Current: 40μAwB0嘉泰姆
Short Circuit ProtectionwB0嘉泰姆
Inrush Current Limit and Soft StartwB0嘉泰姆
LDOwB0嘉泰姆
Max output current for each channel is 0.5AwB0嘉泰姆
Input voltage range: 2 – 6VwB0嘉泰姆
Output voltage range: 1.2V~4.5V (customized on command every 0.1V step)wB0嘉泰姆
Low power consumption: 40uA (Typ.)wB0嘉泰姆
Low output noise (47uVRMS)wB0嘉泰姆
Low dropout voltage:wB0嘉泰姆
600mV@IO1=500mA, VO1=2.8VwB0嘉泰姆
800mV@IO2=500mA, VO2=1.8VwB0嘉泰姆
High ripple rejection:65dB@1KHz (Typ.)wB0嘉泰姆
Low temperature coefficient: ±100ppm/CwB0嘉泰姆
Excellent line regulation: 0.05%/VwB0嘉泰姆
Highly accurate: ±2%wB0嘉泰姆
Output current limitwB0嘉泰姆
Fold-back short circuit currentwB0嘉泰姆

   应用范围 返回TOPwB0嘉泰姆

   Distributed Power SystemswB0嘉泰姆
 Digital Set Top BoxeswB0嘉泰姆
 Flat Panel Television and MonitorswB0嘉泰姆
 Wireless and DSL ModemswB0嘉泰姆
 Power source for cellular phones and various kind of PCSswB0嘉泰姆
 Battery Powered equipmentwB0嘉泰姆

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     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！wB0嘉泰姆

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