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
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产品概述 返回TOP
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 VOUT 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
• 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
Single-Cell Li Battery Powered Products
Portable Audio Players
Cellular Phones
Personal Medical Products
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产品封装图 返回TOP
电路原理图 返回TOP
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非同步升压转换器 |
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Product |
CH |
Enable |
VCC Min |
VCC Max |
VOUT(V) |
IOUT(mA) |
Frequency (kHz) |
Iq (mA) |
SHDN Iq (μA) |
Package |
|
1 |
H |
1.8 |
5.5 |
adj (up to 38) |
adj(up to 1000) |
0.02 |
1 |
TSOT-23-5 TDFN-2x2-6L |
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|
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 |
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Product |
CH |
Enable |
VCC Min |
VCC (Max) |
VOUT V |
IOUT (mA) |
Frequency (kHz) |
Iq (mA) |
SHDN Iq (μA) |
Package |
|
1 |
H |
0.9 |
5.5 |
3.3/5/adj |
600 |
1200 |
0.033 |
1 |
SOT-23-6 |
|
|
1 |
H |
2.7 |
5.5 |
5/adj |
600 |
1200 |
0.03 |
1 |
SOT-23-6 |
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