| TYPE | DESCRIPTION |
|---|
| Mounting Style | Surface Mount |
| Number of Pins | 20 Pin |
| Case/Package | WFQFN-20 |
| Number of Outputs | 4 Output |
| Output Voltage | 4.85V ~ 5.1V |
| Number of Regulated Outputs | 2 Output |
| Switching Frequency | 300kHz, 355kHz |
| Topology | Buck |
| Input Voltage (Max) | 24 V |
| Input Voltage (Min) | 5 V |
| Operating Temperature (Max) | 85 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage | 5.5V ~ 24V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Tape & Reel (TR) |
| Operating Temperature | -40℃ ~ 85℃ |
The TPS51275B-1 device is a cost-effective, dual-synchronous buck controller targeted for notebook system-power supply solutions. The device has 5-V and 3.3-V low-dropout regulators (LDOs) and requires few external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51275B-1 device supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP control provides convenient and efficient operation. The device operates with a supply input voltage ranging from 5 to 24 V and supports output voltages of 5 V and 3.3 V. The TPS51275B-1 device is available in a 20-pin, 3-mm × 3-mm, WQFN package and is specified from –40°C to 85°C.
TI
TPS51275B-1 Dual Synchronous, Step-Down Controller With 5V and 3.3V LDOs, with 3.2ms soft start. 20-WQFN -40℃ to 85℃
TI
TEXAS INSTRUMENTS TPS51275B-1RUKT DC-DC Controller, 5V to 24V, 2Outputs, Synchronous Buck, 355kHz, WQFN-20
TI
TPS51275B-1 Dual Synchronous, Step-Down Controller With 5V and 3.3V LDOs, with 3.2ms soft start. 20-WQFN -40℃ to 85℃
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