L5981 Up to 1 A step down switching regulator
The L5981 is step-down switching regulator with 1.5 A (min.) current limited embedded power MOSFET, so it is able to deliver in excess of 1 A DC current to the load depending on the application condition.
The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for 3.3 V bus.
Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.
The VFQFPN8 package with exposed pad allows reducing the RthJA down to approximately 60 °C/W
技术特性
- 1 A DC output current
- 2.9 V to 18 V input voltage
- Output voltage adjustable from 0.6 V
- 250 kHz switching frequency, programmable up to 1 MHz
- Internal soft-start and inhibit
- Low dropout operation: 100 % duty cycle
- Voltage feed-forward
- Zero load current operation
- Overcurrent and thermal protection
- VFQFPN8 3 mm x 3 mm package
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功能框图
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L5981 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 |
| L5981TR |
Active |
|
1000 |
VDFPN 8 3x3x1.0 |
Tape And Reel |
|
|
| L5981 |
Active |
|
1000 |
VDFPN 8 3x3x1.0 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| L5981 : 1 A step-down switching regulator |
6 |
715KB |
DESIGN NOTES
| 描述 |
版本 |
大小 |
| DN0011: ST1S03 alternative topology: Using a buck in a negative buck-boost configuration |
1.0 |
360KB |
BOARDS AND TOOLS
| 型号 |
描述 |
| EVAL5981 |
L5981, 1 A step-down switching regulator, evaluation board |
MARKETING BROCHURES
| 描述 |
版本 |
大小 |
| BRFFX0210 ：FFX: Full flexible amplification |
1.0.0 |
864KB |
