The CXSU6348 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is applicable to applications requiring high efficiency and high output current. The CXSU6348 series switches its operation to the PFM control circuit whose duty ratio is 15 % with to the PWM/PFM switching control circuit under a light load and to prevent decline in the efficiency by IC operation current.
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目录
7.相关产品
产品概述
The CXSU6348 series is a CMOS step-up switching regulator which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit. With an external low-ON-resistance Nch Power MOS, this product is applicable to applications requiring high efficiency and high output current. The CXSU6348 series switches its operation to the PFM control circuit whose duty ratio is 15 % with to the PWM/PFM switching control circuit under a light load and to prevent decline in the efficiency by IC operation current.
产品特点
Low voltage operation: Start-up is guaranteed from 0.9 V(IOUT =1 mA )
Duty ratio: Built-in PWM/PFM switching control circuit 15 to 78 % .
oscillator frequency：1.0MHz
External parts: coil, diode, capacitor, and transistor
Output voltage range: 1.5V ~6.5V
Output voltage accuracy：±2%
Soft start function: 2 ms.
应用范围
MP3 players, digital audio players
Digital cameras, GPS, wireless transceiver
Portable devices
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产品封装图
电路原理图
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Step-Up DC/DC Converter（升压DC/DC转换器） |
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Part |
MODE |
VIN |
VOUT |
Accu |
FOSC |
Eff. |
Application |
Package |
|
PFM |
0.9-6.5V |
3.0-5.0V |
±2.5% |
100K |
85% |
①②③④⑤⑥⑧ |
SOT23-3/SOT23-5/SOT89-3 |
|
|
PWM |
0.9-6.5V |
3.0-5.0V |
±2.5% |
100K |
87% |
①②③④⑤⑥⑧ |
SOT23-3/SOT23-5/SOT89-3 |
|
|
PFM |
0.9-6.5V |
2.7-5.6V |
±2.5% |
180K |
85% |
①②③④⑤⑥⑦ |
SOT23-5/SOT89-3/SOT23-3/TO92 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
300K |
88% |
⑥⑦⑨⑩ |
SOT23-5 |
|
|
PFM |
0.9-6.5V |
1.8-6.0V |
±2% |
150K/ |
85% |
①②③④⑤⑥ |
SOT89-3//SOT23-5/SOT23-3 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
300K |
88% |
⑥⑦⑨⑩ |
SOT23-5 |
|
|
CHARGE |
2.7-5.5V |
5.0V |
±3% |
650K |
81% |
①②④⑦⑧ |
SOT23-6 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-5/ |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-5/SOT89-5 |
|
|
PFM/PWM |
2.5-5.0V |
<12V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM |
2.5-5.0V |
<20V |
±2% |
1M |
88% |
①⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1.2M |
85% |
⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM, Synchronous |
2.9-4.4V |
<5.5V |
±2% |
1M |
94% |
①②④⑦ |
ESOP8 |
|
|
PFM, Synchronous |
0.9-6.5V |
1.8-6.0V |
±2% |
330K |
85% |
①②③④⑤⑥ |
SOT89-3/ SOT23-5/SOT23-3 |
|
|
PFM, Synchronous |
0.9-5.0V |
1.8-5.0V |
± 2% |
400K |
95% |
①②④⑥⑦ |
SOT89/SOT23/SOT23-5/TO92 |
|
|
PFM, Synchronous |
0.9-6.0V |
1.8-6.0V |
±2% |
140K |
81% |
①②③④⑤⑥ |
SOT89/SOT23-3 |
|
|
Applications： ①Battery powered equipment②Wireless mouse, Wireless keyboard③Toys④Camera, Video camera⑤VCR⑥PDA⑦LED Lighting⑧Wireless communication equipment⑨MID⑩Audio equipment |
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