器件名称: ACE705
功能描述: High efficiency, Low supply current, step-up DC/DC Controller
文件大小: 656.22KB 共14页
简 介:
Technology Description
ACE705
High efficiency, Low supply current, step-up DC/DC Controller
The ACE705 series are CMOS-based PFM step-up DC-DC Controller with low supply current and high output voltage accuracy. Quiescent current drawn from power source is as low as 6uA. It is capable of delivering 500mA output current at 4.0V output with 2V input Voltage. Only four external components are necessary: An inductor, a Schottky diode, an output filter capacitor and a NMOSFET or a NPN transistor All of these features make ACE705 series be suitable for the portable devices, which are supplied by a single battery to four-cell batteries. ACE705 has a drive pin (EXT) for external transistor. So it is possible to load a large output current with a power transistor which has a low saturation voltage. ACE705 integrates stable reference circuits and trimming technology, so it can afford high precision and low temperature-drift coefficient of the output voltage. ACE705 is available in SOT-23-3 and SOT-23-5 packages which are PB free. And in SOT-23-5 the device can be switch on or off easily by CE pin, to minimize the standby supply current.
Features
Deliver 500mA at 4.0V Output voltage with 2.0V input Voltage The converter output voltage can be adjusted from 2.5V～6.0V(In 0.1V step) Output voltage accuracy -----------±2％ Low temperature-drift coefficient of the output voltage------------------±100ppm/℃ Only four external components are necessary: An……
