On Semi公司的NCP6915是微功耗电源集成电路,集成了高效600mA降压DC/DC转换器和动态电压调节(DVS)以及5个低压降(LDO)电压稳压器,峰值效率96%,输出电压从0.8V到2.3V可编,50mV编程量,输出电流600mA, 400 kHz/3.4 MHz I2C控制接口,特别适合于手持应用子系统如照相机模块,微处理器和外设设备.本文介绍了NCP6915主要特性和框图,以及评估板NCP6951EVK主要特性,电路图,PCB装配图和PCB设计图.

The NCP6915 is part of the ON Semiconductor mini-power management IC family. It is optimized to supply battery powered portable application subsystems such as camera modules, microprocessors or any peripherals. This device integrates one high efficiency 600 mA step-down DC to DC converter with DVS (Dynamic Voltage Scaling) and five low dropout (LDO) voltage regulators in WLCSP-20 1.56 x 1.56 mm package.

NCP6915主要特性:

1. One DCDC Converter:

• Peak Efficiency 96%

• Programmable Output Voltage from 0.8 V to 2.3 V by 50 mV Steps

• 600 mA Output Current Capability

2. Five Low Noise - Low Dropout Regulators

• Programmable Output Voltage from 1.7 V to 3.3 V for LDOs1,2,3

• Programmable Output Voltage from 1.2 V to 2.85 V for LDO 4 & 5

• 200 mA Output Current Capability: LDO’s 1,2,3& 4

• 300 mA Output Current Capability: LDO 5

• 45 _Vrms Low Output Noise

3. Control

• 400 kHz/3.4 MHz I2C Control Interface

• Hardware Enable Pin

• Customizable Power up Sequencer

4. Extended Input Voltage Range 2.5 V to 5.5 V

• Support of Newest Battery Technologies

5. Optimized Power Efficiency

• 82 _A Very Low Quiescent Current at no Load

• Dynamic Voltage Scaling on DCDC Converter

• Regulators can be Supplied from DCDC Converter Output

6. Small footprint

• Package WLCSP16 1.56 x 1.56 mm2

• DCDC Converter runs at 3.0 MHz using a 1 _H Inductor and10 _F Capacitor or 2.2 _H Inductor and 4.7 _F Capacitor

7. This is a Pb-Free Device

NCP6915典型应用:

• Cellular Phones

• Digital Cameras

• Personal Digital Assistant and Portable Media Player