TPS56428DDA
Active4.5V TO 18V INPUT, 4-A SYNCHRONOUS STEP-DOWN CONVERTER WITH ADVANCED ECO-MODE™
Deep-Dive with AI
Search across all available documentation for this part.
TPS56428DDA
Active4.5V TO 18V INPUT, 4-A SYNCHRONOUS STEP-DOWN CONVERTER WITH ADVANCED ECO-MODE™
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS56428DDA |
|---|---|
| Current - Output | 4 A |
| Frequency - Switching | 650 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 8-PowerSOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 8-SO PowerPad |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 18 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) [Max] | 7 V |
| Voltage - Output (Min/Fixed) | 0.6 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 1.50 | |
| 10 | $ 1.34 | |||
| 75 | $ 1.27 | |||
| 150 | $ 1.08 | |||
| 300 | $ 1.01 | |||
| 525 | $ 0.89 | |||
| 1050 | $ 0.74 | |||
| 2550 | $ 0.68 | |||
| 5025 | $ 0.66 | |||
| LCSC | Piece | 1 | $ 0.73 | |
| 200 | $ 0.28 | |||
| 500 | $ 0.27 | |||
| 1000 | $ 0.27 | |||
| Texas Instruments | TUBE | 1 | $ 1.12 | |
| 100 | $ 0.93 | |||
| 250 | $ 0.67 | |||
| 1000 | $ 0.50 | |||
Description
General part information
TPS56428 Series
The TPS56428 is a D-CAP2 mode synchronous buck converter which is optimized for various power bus regulation needs with a cost effective, low component count, low standby current solution.
The D-CAP2 mode control provides a fast transient response with no external compensation components. This adaptive on-time control supports seamless transition between PWM mode at higher load conditions and advanced Eco-mode operation at light loads. Advanced Eco-mode™ maintains higher efficiency during lighter load conditions than traditional skip mode.
The TPS56428 also has a proprietary circuit to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18 V VIN input and its output voltage can be programmed between 0.6V and 7.0V. The device also features a fixed 1-ms soft start and a power-good output.
