CXSU63219是一种恒频、电流模式、同步升压开关稳压器。它可用于在400毫安时从3.3伏轨道或锂离子电池产生5伏电压。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CXSU63219易于使用，并使整个解决方案适合紧凑的空间。对于轻载电流CXSU63219进入节电模式以保持高效率。抗振铃控制电路通过在不连续模式下阻尼电感器来减少EMI问题
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产品概述 返回TOP
The CXSU63219 is a constant frequency, current mode, synchronous step-up switching regulator. It can 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 CXSU63219 simple to use and fit the total solution into a compact space.
For light load current, the CXSU63219 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 CXSU63219 provides true output disconnect and this allows VOUT to go to zero volts during shutdown without drawing any current from the input source. The CXSU63219 supports1.8V logic for control.
The output voltage of CXSU63219-ADJ can be programmed by an external resistor divider, and that of CXSU63219-5.0 is fixed internally on the chip. The device is available in the Green SOT-23-6 package. It operated 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: 2.7V to 5.5V
• 5.0V Fixed Output Voltage
• 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
• 1.8V Logic on EN Pin for Control
• Low Reverse Leakage Current when VOUT > VIN
• 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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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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