SP6121 8管脚低压同步补偿控制器
The SP6121 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. The operating frequency is internally set at 500kHz, permitting the use of small, surface mount inductors and capacitors. Requiring only few external components, the SP6121 packaged in an 8-pin SOIC, is especially suited for low voltage applications where cost, small size and high efficiency are critical. With its low voltage capability and inherent 100% duty cycle operation, the SP6121 allows low dropout operation in the event of a low input supply voltage condition.
技术特性
- Optimized for Single Input Voltage - 3V to 5.5V
- High Efficiency: Greater than 95% possible
- Accurate, 500kHz Fixed Frequency Operation
- Fast Transient Response
- 500µA, IQ (25µA in Shutdown)
- Internal, 0.4 V/ms, Soft Start Circuit
- Precision 1% Reference
- Resistor Programmable Output Voltage
- Lossless Adjustable Current Limit with
- High Side RDS(ON) Sensing
- 0% to 100% Duty Cycle Range
- High Side PMOS Switch Negates Need for
- External Charge Pump
- Output Over Voltage Protection
- Hiccup Mode Current Limit Protection
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) |
1.3 |
| 最高输出电压(V) |
5.5 |
| 频率 |
500 |
| 效率(%) |
95 |
| 说明书 |
固定工作频率 |
应用领域 APPLICATION
- Supply Bias for
- DSP
- Microprocessor Core
- I/O & Logic
- Video Cards
- Board Level Supply in
Distributed Power Systems
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 |
立刻购买 |
申请样片 |
| SP6121CN-RETEST |
|
|
0 |
70 |
OBS |
|
|
| SP6121EB |
Board |
|
0 |
70 |
运行 |
|
|
| SP6121EN/TR |
NSOIC8 |
|
-40 |
85 |
EOL |
|
|
| SP6121CN-L/TR |
NSOIC8 |
|
0 |
70 |
运行 |
|
|
| SP6121EN |
|
|
|
|
OBS |
|
|
| SP6121CN |
NSOIC8 |
|
0 |
70 |
运行 |
|
|
| SP6121EN-L |
|
|
|
|
OBS |
|
|
| SP6121CN-L |
NSOIC8 |
|
0 |
70 |
运行 |
|
|
| SP6121CN/TR |
NSOIC8 |
|
0 |
70 |
运行 |
|
