Regulador +5 volt 5 amp TPS5450
Description
The TPS5450 is a high-output-current PWM converter that integrates a low-resistance, high-side N-channel MOSFET. Included on the substrate with the listed features are a high-performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 μA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5450 feedback loop is internally compensated.
The TPS5450 device is available in a thermally-enhanced, 8-pin SOIC PowerPAD package. TI provides evaluation modules and software tool to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.
Features
- Wide Input Voltage Range: 5.5 V to 36 V
- Up to 5-A Continuous (6-A Peak) Output Current
- High Efficiency Greater Than 90% Enabled by 110-mΩ
Integrated MOSFET Switch - Wide Output Voltage Range: Adjustable Down to 1.22 V
With 1.5% Initial Accuracy - Internal Compensation Minimizes External Part Count
- Fixed 500-kHz Switching Frequency for Small Filter Size
- 18-µA Shutdown Supply Current
- Improved Line Regulation and Transient Response by Input
Voltage Feed Forward - System Protected by Overcurrent Limiting, Overvoltage
Protection and Thermal Shutdown - –40°C to 125°C Operating Junction
Temperature Range - Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD™
Package
Parametrics Compare all products in Step-Down (Buck) Converter
| Regulated Outputs (#) |
| Vin (Min) (V) |
| Vin (Max) (V) |
| Vout (Min) (V) |
| Vout (Max) (V) |
| Iout (Max) (A) |
| Topology |
| Switching Frequency (Max) (kHz) |
| Switch Current Limit (Typ) (A) |
| Iq (Typ) (mA) |
| Duty Cycle (Max) (%) |
| Soft Start |
| Compensation |
| Special Features |
| Brand |
| Control Mode |
| Vref Accuracy (Typ) (%) |
| Rating |
| Operating Temperature Range (C) |
| Pin/Package |
| Approx. Price (US$) |
| TPS5450 | TPS5410 | TPS5420 | TPS5430 |
|---|---|---|---|
| 1 | 1 | 1 | 1 |
| 5.5 | 5.5 | 5.5 | 5.5 |
| 36 | 36 | 36 | 36 |
| 1.22 | 1.23 | 1.23 | 1.23 |
| 31 | 31 | 31 | 31 |
| 5 | 1 | 2 | 3 |
| Buck | Buck | Buck | Buck Inverting Buck-Boost |
| 500 | 500 | 500 | 500 |
| 6 | 1.2 | 3 | 4 |
| 3 | 3 | 3 | 3 |
| 89 | 87.5 | 87 | 87 |
| Fixed | Fixed | Fixed | Fixed |
| Internal | Internal | Internal | Internal |
| Enable | Enable | Enable | Enable |
| SWIFT | SWIFT | SWIFT | SWIFT |
| Voltage Mode | Voltage Mode | Voltage Mode | Voltage Mode |
| 1.5 | 1.5 | 1.5 | 1.5 |
| Catalog | Catalog | Catalog | Catalog |
| -40 to 125 | -40 to 125 | -40 to 125 | -40 to 125 |
| 8SO PowerPAD | 8SOIC | 8SOIC | 8SO PowerPAD |
| 2.25 | 1ku | 1.60 | 1ku | 1.70 | 1ku | 1.85 | 1ku |
| Sample & Buy | Sample & Buy | Sample & Buy | Sample & Buy |
Other qualified versions of TPS5450
| Version | Part Number | Definition |
|---|---|---|
| Automotive | TPS5450-Q1 | Q100 devices qualified for high-reliability automotive applications targeting zero defects |
| Enhanced Product | TPS5450-EP | Supports Defense, Aerospace and Medical Applications |
Diagrams (1)
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