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The L5987 is a step-down switching regulator with a 3.5 A (minimum) current limited embedded Power MOSFET, so it is able to deliver an up to 3 A current to the load depending on the application conditions.
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 a 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 and the HSOP packages with an exposed pad allow reducing the RthJAdown to 60 °C/W and 40 °C/W respectively.主要特性
- 3 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 feedforward
- Zero load current operation
- Overcurrent and thermal protection
- VFQFPN 3 x 3 -8L and HSOP8 package
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Picture 产品型号 制造商 描述 EVAL5987A -- 3 A step-down switching regulator demonstration board based on the L5987, L5987A 
STEVAL-ISA201V1 ST 3 A step-down switching regulator evaluation board based on the L5987 产品型号3 A step-down switching regulator demonstration board based on the L5987, L5987A
3 A step-down switching regulator evaluation board based on the L5987
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| 产品型号 | 供货状态 | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L5987A | 批量生产 | PowerSO-8 | Industrial | Ecopack2 | |
| L5987ATR | 批量生产 | PowerSO-8 | Industrial | Ecopack2 | |
| L5987TR | 批量生产 | DFN8 3x3 | Industrial | Ecopack2 | |
L5987A
Package:
PowerSO-8Material Declaration**:
L5987ATR
Package:
PowerSO-8Material Declaration**:
L5987TR
Package:
DFN8 3x3Material Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
