STEVAL-ISA042V2 1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03
The STEVAL-ISA042V2 demonstration board is a step-down DC-DC converter optimized for powering the low-voltage digital core in HDD applications and, more generally, replacing the high-current linear solution when the power dissipation may cause excessive heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 16 V.
A high switching frequency (1.5 MHz) allows the use of tiny surface-mounted components, as well as the use of a resistor divider to set the output voltage value. Only an inductor, a Schottky diode, and two capacitors are required. In addition, a low output ripple is guaranteed by the current-mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damage due to accidental short-circuits.
It uses the ST1S03 device.
The ST1S03 is available in a DFN6 (3x3mm) package.
技术特性
- Adjustable current-mode PWM step-down DC-DC converter
- Output voltage, Vout : 3.3 V
- Output current, Iout: 1.5 A
- Internal compensation to eliminate additional components
- Pulse skipping for Ioutlower than 15 mA, to maintain the regulation with light loads
- RoHS compliant
STEVAL-ISA042V2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-ISA042V2 |
Active |
|
1000 |
|
|
|
|
DATA BRIEF
| 描述 |
版本 |
大小 |
| STEVAL-ISA042V2 : 1.5 A / 3.3 V step-down DC-DC converter demonstration board based on the ST1S03 |
1 |
91KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2093: ST1S03 buck converters for HDD power supplies |
2 |
234KB |
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