The CXSU63025 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 CXSU63025 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
产品概述 返回TOP
The CXSU63025 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 CXSU63025 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 返回TOP
1.)Low voltage operation: Start-up is guaranteed from 0.9 V
(IOUT =1 mA )
2.)Duty ratio: Built-in PWM/PFM switching control circuit 15 to 78 %
3.)oscillator frequency：1.0MHz
4.)External parts: coil, diode, capacitor, and transistor
5.)Output voltage range: 1.5V ~20V
6.)Output voltage accuracy：±2%
7.)Soft start function: 2 mS.
8.)PACKAGE：SOT23-5
应用范围 返回TOP
MP3 players, digital audio players
Digital cameras, GPS, wireless transceiver
Portable devices
技术规格书（产品PDF) 返回TOP
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产品封装图 返回TOP
| Pin Number | Pin Name | Function |
| SOT23-5 | ||
| 1 | ||
| FB | Feed Back voltage pin | |
| 2 | VDD | IC power supply pin |
| 3 | CE | Shutdown pin |
| 4 | GND | GND pin |
| 5 | EXT | External transistor connection pin |
电路原理图 返回TOP
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外置MOS/扩流输出DC-DC升压IC |
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型号 |
工作模式 |
电压范围 |
输出电压 |
输出电 压形式 |
输出电 压精度 |
最大输出电流 |
效率 |
静态电流 |
工作频率 |
封装 |
|
PWM/PFM |
0.9V-6.0V |
1.5V-20V |
可调输出 |
±2% |
扩流达3A |
90% |
0.5uA |
1MHz |
SOT25 |
|
|
PWM/PFM |
1.8V-6.0V |
最大18V |
可调输出 |
±2% |
扩流达2A |
92% |
70uA |
1.2MHz |
SOT25 |
|
|
PWM/PFM |
1.6V-7.0V |
最大20V |
可调输出 |
±2% |
扩流达2A/恒流输 出和限流保护 |
90% |
350uA |
550KHz |
SOT26 |
|
|
PWM |
4.5V-32V |
最大100V |
可调输出 |
±2% |
扩流达40-50W/带恒 流输出和限流保护 |
5.3uA |
300KHz |
SSOP10 |
||
|
PWM |
1.8-15V |
可调输出 |
±4% |
扩流达40-50W/带恒 流输出和限流保护 |
1uA |
1MHz |
SOP8 |
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