SP6128 低电压，同步降压脉冲调制（PWM）控制器
The SP6128A is a fixed frequency, voltage mode, synchronous PWM controller designed to work from a single 5V or 3.3V input supply, providing excellent AC and DC regulation for high efficiency power conversion. Requiring only few external components, the SP6128A packaged in an 14-pin TSSOP, is especially suited for low voltage applications where cost, small size and high efficiency are critical. The operating frequency is internally set to 300kHz, allowing small inductor values and minimizing PC board space. The SP6128A drives two N-channel power MOSFETs for improved efficiency and includes an accurate 0.8V reference for low output voltage applications.
技术特性
- Optimized for Single Supply, 3V - 5.5V Applications
- High Efficiency: Greater Than 95% Possible
- Discontinuous Startup for Pre-charged Output
- Accurate Fixed 300kHz Frequency Operation
- Fast Transient Response
- Internal Soft Start Circuit
- Accurate 0.8V Reference Allows Low Output Voltages
- Resistor Programmable Output Voltage
- Resistor Programmable Overcurrent Threshold
- Loss-less Current Limit with High Side RDS(ON) Sensing
- Hiccup Mode Current Limit Protection
- Dual N-Channel MOSFET Synchronous Driver
- Quiescent Current: 500μA, 30μA in Shutdown
- 14 pin TSSOP
功能框图 Functional Block Diagram
|
技术指标
| 静态电流(µA) |
500 |
| 最低输入电压(V) |
3 |
| 最高输入电压(V) |
5.5 |
| 最低输出电压(V) |
0.8 |
| 最高输出电压(V) |
5 |
| 频率 |
300 |
| 效率(%) |
95 |
| 说明书 |
Fixed Switching Frequency |
应用领域 APPLICATION
- DSP
- Microprocessor Core
- I/O & Logic
- Industrial Control
- Distributed Power
- Low Voltage Power
订购信息 Ordering Information
| 器件型号 |
封装编码 |
有害物质限制 |
最低温度 |
最高温度 |
状态 |
| SP6128CY |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128ASEY-L |
TSSOP14 |
|
-40 |
85 |
Active |
| SP6128CY/TR |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128AHY-L/TR |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128ASEY-L/TR |
TSSOP14 |
|
-40 |
85 |
Active |
| SP6128EB |
Board |
|
0 |
85 |
Active |
| SP6128EY/TR |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128ACY-L |
TSSOP14 |
|
0 |
70 |
EOL |
| SP6128ACY-L/TR |
TSSOP14 |
|
0 |
70 |
EOL |
| SP6128EY |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128AEY |
TSSOP14 |
|
-40 |
85 |
OBS |
| SP6128AEY/TR |
TSSOP14 |
|
-40 |
85 |
运行 |
| SP6128AEY-L |
TSSOP14 |
|
-40 |
85 |
运行 |
| SP6128ACY |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128ACY/TR |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128AHY/TR |
TSSOP14 |
|
-40 |
100 |
OBS |
| SP6128AHY-L |
TSSOP14 |
|
0 |
70 |
返修 |
| SP6128AEY-L/TR |
TSSOP14 |
|
-40 |
85 |
运行 |
| SP6128AHY |
TSSOP14 |
|
0 |
70 |
返修 |
|
