Packaging information
| Package | Pins SOT-5X3 (DRL) | 8 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 4,000 | LARGE T&R |
Features for the TPS631000
- 1.6-V to 5.5-V input voltage range
- Device input voltage > 1.65 V for start-up
- 1.2-V to 5.3-V output voltage range (adjustable)
- High output current capability, 3-A peak switch current
- 2-A output current for VIN ≥ 3 V, VOUT = 3.3 V
- 1.5-A output current for VIN ≥ 2.7 V, VOUT = 3.3 V
- High efficiency over the entire load range
- 8-µA typical quiescent current
- Power save mode
- 150-mV load-step response at a 1-A current step
- Peak current buck-boost mode architecture
- Seamless mode transition with < 20-mV output ripple
- Forward and reverse current operation
- Start-up into pre-biased outputs
- Fixed-frequency operation with 2-MHz switching
- Safety and robust operation features
- Overcurrent protection and short-circuit protection
- Integrated soft start with active ramp adoption
- Overtemperature protection and overvoltage protection
- True shutdown function with load disconnect
- Forward and backward current limit
- Small solution size
- Small 1-µH inductor
- Works with one 0805 output capacitor over the full VOUT range
- Create a custom design using the TPS631000 with the WEBENCH Power Designer
Description for the TPS631000
The TPS631000 is a constant frequency peak current mode control buck-boost converter. The device has a 3-A peak current limit (typical) and 1.6-V to 5.5-V input voltage range. The TPS631000 provides a power supply solution for system pre-regulators and voltage stabilizers.
Depending on the input voltage, the TPS631000 automatically operates in boost, buck, or in 3-cycle buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes happen at a defined duty cycle and avoid unwanted toggling within the modes to reduce output voltage ripple. 8-µA quiescent current and power save mode power enable the highest efficiency for light to no-load conditions.
The TPS631000 offers a very small solution size with a 1.2-mm × 2.1-mm SOT-583 package, a 1-µH inductor, and one 0805 output capacitor.