CXSU63177设备为单电池锂离子或锂聚合物，或两到三电池碱性、镍镉或镍氢电池供电的产品提供电源解决方案。转换器产生稳定的输出电压，由外部电阻分压器调节或固定在芯片内部。它提供高效率的电源转换，并能够提供输出电流高达1 A在5 V的电源电压下降到1.8 V。实施升压转换器是基于一个固定频率，脉冲宽度调制（PWM）控制器使用同步整流器，以获得最大的效率
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产品概述 返回TOP
The CXSU63177 devices provide a power supply solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two to three-cell alkaline, NiCd or NiMH battery. The converter generates a stable output voltage that is adjusted by an external resistor divider or fixed internally on the chip. It provides high efficient power conversion and is capable of delivering output currents up to 1 A at 5 V at a supply voltage down to 1.8 V. The implemented boost converter is based on a fixed frequency, pulse-width- modulation (PWM) controller using a synchronous rectifier to obtain maximum efficiency. At low load currents the converter enters Power Save mode to maintain a high efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to operate at a fixed switching frequency. It can also operate synchronized to an external clock signal that is applied to the SYNC pin. the maximum peak current in the boost switch is limited to a value of 5000 mA. The converter can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the battery. A low-EMI mode is implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The device is packaged in a 16-pin QFN package measuring 4 mm x 4 mm (RSA) or in a 16-pin TSSOP16.or in a DFN3x3-12 packages
产品特点 返回TOP
92% Efficient Synchronous Boost Converter With 1000-mA Output Current From 1.8-V Input
Device Quiescent Current: 20-μA (Typ)
Input Voltage Range: 1.8-V to 5.5-V
Adjustable Output Voltage Options Up to 5.5-V
Power Save Mode for Improved Efficiency at Low Output Power
Low Battery Comparator
Low EMI-Converter (Integrated Antiringing Switch)
Load Disconnect During Shutdown
Over-Temperature Protection
Available in a Small 4 mm x 4 mm QFN-16 or in a TSSOP-16 or in a DFN3*3-12 package
应用范围 返回TOP
Power Bank
Tablet
Portable Equiment
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产品封装图 返回TOP
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| Step-up Converter | ||||||
| Part No. | Input Voltage | Output Voltage | Current MAX | Frequency | Efficiency | Package |
| CXSU63168 | 6V | 20V | 350mA | 1.25MHz | 90% | SOT23-6 |
| CXSU63169 | 6V | 20V/28V/35V | 1A | 1MHz | 90% | SOT23-6 |
| CXSU63170 | 6V | 24V | 2A | 1.5MHz | 90% | SOT23-6 |
| CXSU63171 | 6V | 6V | 2A | 1MHz | 90% | SOT23-6 |
| CXSU63172 | 6V | 20V | 2A | 1.5MHz | 88% | SOT23-5 |
| CXSU63173 | 6V | 20V | 2A | 1.5MHz | 88% | SOT23-6 |
| CXSU63174 | 20V | 30V | 3.5A | 1.2MHz | 95% | DFN-10 |
| CXSU63175 | 6V | --V | --A | 1MHz | 90% | SOP-8/TSSOP-8 |
| CXSU63176 | 6V | 6V | 2A | 1MHz | 95% | SOT23-6 |
| CXSU63177 | 5V | 5V | 2.1A | 1.2MHz | 92% | /DFN-12/QFN-16QFN-16 |
| CXSU63178 | 5V | 5V | 2.1A | 1.2MHz | 92% | ESOP-8 |
| CXSU63179 | 5V | 5V | 6A | 1.2MHz | 92% | ESOP-8 |
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