Texas Instruments' TPS6307x is a high efficiency, low quiescent current, buck-boost converter suitable for applications where the input voltage can be higher or lower than the output voltage. Output currents can go as high as 2 A in boost mode and in buck mode. The buck-boost converter is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain maximum efficiency. At low load currents, the converter enters power save mode to maintain high efficiency over a wide load current range. The converter can be disabled to minimize battery drain. During shutdown, the load is disconnected from the battery. The device is available in a 2.5 mm × 3 mm QFN package.
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- Input voltage range: 2.0 V to 16 V
- Output voltage range: 2.5 V to 9 V
- Up to 95% efficiency
- ±1% DC accuracy in PWM mode
- +3% / -1% DC accuracy in PFM mode
- 2 A output current in buck mode
- 2 A output current in boost mode (VIN = 4 V; VOUT = 5 V)
- Precise ENABLE input allows
- User defined under-voltage lockout
- Exact sequencing
- Automatic transition between step-down and boost mode
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- Typical device quiescent current: 50 µA
- Fixed and adjustable output voltage options
- Power save mode for improved efficiency at low output power
- Forced fixed frequency operation at 2.4 MHz and synchronization option
- Power good output
- VSEL simply allows output voltage change
- Load disconnect during shutdown
- Over-temperature protection
- Input / output over-voltage protection
- Available in QFN package
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