TPS63802 Texas instruments

TPS63802

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TPS63802

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Описание

The TPS63802 is a high efficiency, high output current buck-boost converter. Depending on the input voltage, it automatically operates in boost, buck, or in a novel 4-cycle buck-boost mode when the input voltage is approximately equal to the output voltage. The transitions between modes happen at defined thresholds and avoid unwanted toggling within the modes to reduce output voltage ripple. The device output voltages are individually set by a resistive divider within a wide output voltage range. An 11-µA quiescent current enables the highest efficiency for little to no-load conditions.

Input voltage range: 1.3 V to 5.5 V
- Device input voltage > 1.8 V for start-up
Output voltage range: 1.8 V to 5.2 V (adjustable)
2-A output current for V_I ≥ 2.3 V, V_O = 3.3 V
High efficiency over the entire load range
- 11-µA operating quiescent current
- Power save mode and mode selection for forced PWM-mode
Peak current buck-boost mode architecture
- Defined transition points between buck, buck-boost, and boost operation modes
- Forward and reverse current operation
- Start-up into pre-biased outputs
Safety and robust operation features
- Integrated soft start
- Overtemperature- and overvoltage-protection
- True shutdown function with load disconnect
- Forward and backward current limit
Small solution size of 21.5 mm²
- Tiny SON/DFN package (similar to QFN)
- Small 0.47-µH inductor
- Works with a 22-µF minimum output capacitor
Create a custom design using the TPS63802 with the WEBENCH Power Designer

Topology	Buck-Boost
Vin (min) (V)	1.3
Vin (max) (V)	5.5
Vout (max) (V)	5.2
Vout (min) (V)	1.8
Duty cycle (max) (%)	100
Features	Enable, Light Load Efficiency, Load Disconnect, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed
Switch current limit (typ) (A)	5
Switching frequency (min) (kHz)	500
Switching frequency (max) (kHz)	3100
Iq (typ) (mA)	0.011
Iout (max) (A)	2
Rating	Catalog
Operating temperature range (°C)	-40 to 125
Type	Converter