TPS65261-1RHBT
Active4.5V TO 18V INPUT VOLTAGE, 3A/2A/2A OUTPUT CURRENT TRIPLE SYNCHRONOUS
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TPS65261-1RHBT
Active4.5V TO 18V INPUT VOLTAGE, 3A/2A/2A OUTPUT CURRENT TRIPLE SYNCHRONOUS
Technical Specifications
Parameters and characteristics for this part
| Specification | TPS65261-1RHBT |
|---|---|
| Current - Output | 2 A, 3 A |
| Frequency - Switching [Max] | 2 MHz |
| Frequency - Switching [Min] | 250 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 3 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-VQFN (5x5) |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Input (Max) [Max] | 18 V |
| Voltage - Input (Min) [Min] | 4.5 V |
| Voltage - Output (Max) [Max] | 18 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 | Cut Tape (CT) | 1 | $ 3.42 | |
| 10 | $ 3.07 | |||
| 25 | $ 2.90 | |||
| 100 | $ 2.52 | |||
| Digi-Reel® | 1 | $ 3.42 | ||
| 10 | $ 3.07 | |||
| 25 | $ 2.90 | |||
| 100 | $ 2.52 | |||
| Tape & Reel (TR) | 250 | $ 2.39 | ||
| 500 | $ 2.14 | |||
| 1250 | $ 1.81 | |||
| 2500 | $ 1.72 | |||
| Texas Instruments | SMALL T&R | 1 | $ 2.58 | |
| 100 | $ 2.26 | |||
| 250 | $ 1.59 | |||
| 1000 | $ 1.28 | |||
Description
General part information
TPS65261-1 Series
The TPS65261, TPS65261-1 is a monolithic triple synchronous step-down (buck) converter with 3-A/2-A/2-A output currents. A wide 4.5-V to 18-V input supply voltage range encompasses the most intermediate bus voltages operating off 5-V, 9-V, 12-V or 15-V power bus. The converter, with constant frequency peak current mode, is designed to simplify its application while giving designers options to optimize the system according to targeted applications. The switching frequency of the converters can be adjusted from 250 kHz to 2 MHz with an external resistor. The 180° out-of-phase operation between Buck1 and Buck2, 3 (Buck2 and 3 run in phase) minimizes the input filter requirements.
The TPS65261, TPS65261-1 features an automatic power sequence with connecting MODE pin to V7V and configuring EN1/2/3 pins. The device also features an open drain RESET signal to monitor power down.
At light load, the TPS65261 automatically operates in pulse skipping mode (PSM) and the TPS65261-1 operates in force continuous current mode (FCC). PSM mode provides high efficiency by reducing switching losses at light loads and FCC mode reduces noise susceptibility and RF interference.
