90%高效同步升压变换器CXSU63218恒频电流模式开关稳压器功率mosfet单电池碱性3.3V和5.0V固定输出电压

CXSU63218是一种恒频、电流模式、同步升压开关稳压器。它的输出电流可以高达75毫安，同时使用单电池碱性，并将其放电至0.9伏。它还可以用于产生5伏，400毫安从3.3伏轨道或锂离子电池。高开关频率使电感和电容的尺寸最小化。集成的功率mosfet和内部补偿使CXSU63218易于使用，并使整个解决方案适合一个紧凑的空间。对于轻载电流，CXSU63218进入节电模式以保持高效率

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXSU63218 is a constant frequency, current mode, synchronous step-up switching regulator. Its output currents can go as high as 75mA while using a single-cell alkaline, and discharge it down to 0.9V. It can also be used for generating 5V at 400mA from a 3.3V rail or a Li-ion battery.

High switching frequency minimizes the sizes of inductor and capacitor. Integrated power MOSFETs and internal compensation make the CXSU63218 simple to use and fit the total solution into a compact space.

For light load current, the CXSU63218 enters into the power-save mode to maintain high efficiency. Anti-ringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode. The CXSU63218 provides true output disconnect and this allows V_OUT to go to zero volt during shutdown without drawing any current from the input source.

The output voltage of CXSU63218-ADJ can be programmed by an external resistor divider, and those of CXSU63218-3.3/CXSU63218-5.0 are fixed internally on the chip. The device is available in Green SOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃

   产品特点 返回TOP

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• 90% Efficient Synchronous Boost Converter

• Device Quiescent Current: 30μA (TYP)
• Less than 1μA Shutdown Current
• Input Voltage Range: 0.9V to 5.5V
• 3.3V and 5.0V Fixed Output Voltages
• Output Voltage Clamping: 6V
• Adjustable Output Voltage Up to 5.5V
• Power-Save Mode for Improved Efficiency at Low
   Output Power
• Load Disconnect During Shutdown
• Over-Temperature Protection
• Available in Green SOT-23-6 Package
• -40℃ to +85℃ Operating Temperature Range

   应用范围 返回TOP

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Single-Cell Li Battery Powered Products
Portable Audio Players
Cellular Phones
Personal Medical Products

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

 

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非同步升压转换器
Product	CH	Enable	VCC Min	VCC Max	VOUT(V)	IOUT(mA)	Frequency (kHz)	Iq  (mA)	SHDN Iq  (μA)	Package
CXSU63216	1	H	1.8	5.5	adj (up to 38)		adj(up to 1000)	0.02	1	TSOT-23-5 TDFN-2x2-6L
CXSU63217	1	H	3	20	adj (up to 38)	300	1200	0.4	1	TDFN-2x2-6L TSOT-23-6
同步整流升压转换器
Product	CH	Enable	VCC Min	VCC (Max)	VOUT V	IOUT (mA)	Frequency (kHz)	Iq  (mA)	SHDN Iq (μA)	Package
CXSU63218	1	H	0.9	5.5	3.3/5/adj	600	1200	0.033	1	SOT-23-6
CXSU63219	1	H	2.7	5.5	5/adj	600	1200	0.03	1	SOT-23-6