STEVAL-ISA047V2 1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03A
This demonstration board is based on the ST1S03A, an adjustable current mode PWM step-down DC-DC converter with internal 1.5 A power switch, packaged in a 6-lead DFN 3x3 mm.
It's a complete 1.5 A switching regulator with its internal compensation eliminating additional component.
The constant frequency, current mode, PWM architecture and stable operation with ceramic capacitors results in low, predictable output ripple.
However, in order to maximize the power conversion efficiency with light load, the regulator reduces automatically the switching frequency when the output load becomes less than 250 mA typically.
技术特性
- Step-down current mode PWM (1.5 MHz) DC-DC converter
- 2% DC output voltage tolerance
- Internal soft-start for start-up current limitation and power on delay of 50-100 μs
- Typical efficiency: > 85%
- Inhibit function
- 1.5 A output current capability
- Not switching quiescent current: max 1.5 mA (overtemperature range)
- Switch VDS: max 200 mV @ ISW = 750 mA
- Uses tiny capacitors and inductors
- RoHS compliant
| 功能框图
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STEVAL-ISA047V2 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STEVAL-ISA047V2 |
Active |
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1000 |
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DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISA047V2 : 1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03A |
1 |
215KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2093: ST1S03 buck converters for HDD power supplies |
2 |
234KB |
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