L5983：Up to 1.5 A step down switching regulator
The L5983 is a step-down switching regulator with a 2.0 A (min.) current limited embedded Power MOSFET, so it is able to deliver an output current in excess of 1.5 A DC to the load.
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 VFQFPN package with an exposed pad allows reducing the RthJAdown to approximately 60 °C/W.
Key Features
- 1.5 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
- VFQFPN8 3 x 3 mm package
产品规格
| Description | Version | Size |
|---|---|---|
| DS5037: 1.5 A step-down switching regulator | 8.0 | 1020 KB |
Design Notes & Tips
| Description | Version | Size |
|---|---|---|
| DN0011: ST1S03 alternative topology: Using a buck in a negative buck-boost configuration | 1.1 | 359 KB |
手册
| Description | Version | Size |
|---|---|---|
| Brochure Power management guide | 05.2016 | 7 MB |
解决方案评估工具
| 型号 | 制造商 | Description |
|---|---|---|
| EVAL5983 | 1.5 A step-down switching regulator demonstration board based on the L5983 | |
| STEVAL-ISA144V1 | 1.5 A step-down switching regulator demonstration board based on the L5983 |
样片和购买
| 型号 | Package | Packing Type | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|---|
| L5983TR | VDFPN 8 3x3x1.0 | Tape And Reel | 0.918 | 1000 | NEC | EAR99 | PHILIPPINES |
质量和可靠性
| 型号 | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| L5983TR | VDFPN 8 3x3x1.0 | Industrial | Ecopack2 | md_x0-wspc-vdfpn-wspc-3x3x1.0-wspc-8-wspc-pitch-wspc-0.50_c3x0-wspc-up03ba5-wspc-lock.pdf md_x0-wspc-vdfpn-wspc-3x3x1-wspc-8-wspc-pitch-wspc-0.xml |
- circuit_diagram_13005_thumbnail.png L5983
- ST1S03 alternative topology: Using a buck in a negative buck-boost configuration L5986
- Very low drop voltage regulators with inhibit KFXX
- md_x0-wspc-vdfpn-wspc-3x3x1.0-wspc-8-wspc-pitch-wspc-0.50_c3x0-wspc-up03ba5-wspc-lock.pdf L5983
- md_x0-wspc-vdfpn-wspc-3x3x1-wspc-8-wspc-pitch-wspc-0.xml L5983
