| Vin (Min) (V) | 5.5 |
| Vin (Max) (V) | 36 |
| Vout (Min) (V) | 1.22 |
| Vout (Max) (V) | 31 |
| Iout (Max) (A) | 5 |
| Iq (Typ) (uA) | 3000 |
| Switching frequency (Min) (kHz) | 500 |
| Switching frequency (Max) (kHz) | 500 |
| Features | Enable, Over Current Protection |
| Rating | HiRel Enhanced Product |
| Regulated outputs (#) | 1 |
| Control mode | Voltage Mode |
| Duty cycle (Max) (%) | 89 |
- Qualified for Automotive Applications
- 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-m
Integrated MOSFET Switch - Wide Output Voltage Range: Adjustable Down to
1.22 V with 1.5% Initial Accuracy - Internal Compensation Minimizes External
Parts 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 - Available in Small Thermally Enhanced 8-Pin
SOIC PowerPAD? Package - For SWIFT? Documentation, Application Reports
and Design Software, See the TI Website at www.ti.com/swift - APPLICATIONS
- High-Density Point-of-Load Regulators
- LCD Displays, Plasma Displays
- Battery Chargers
- 12-V/24-V Distributed Power Systems
- SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Military (–55°C/125°C) Temperature Range(1)
- Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
(1) Additional temperature ranges are available - contact factory
As a member of the SWIFT? family of DC/DC regulators, 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 tools to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.
