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Rating |
Catalog |
Topology |
Buck |
Iout (max) (A) |
2 |
Vin (max) (V) |
18 |
Vin (min) (V) |
4.5 |
Vout (max) (V) |
5.5 |
Vout (min) (V) |
0.76 |
Features |
Enable, Light-load efficiency, Power good, Soft-start adjustable, Synchronous rectification |
Control mode |
D-CAP2 |
Operating temperature range (°C) |
-40 to 85 |
Iq (typ) (A) |
0.0008 |
Duty cycle (max) (%) |
90 |
HTSSOP (PWP)-14-32 mm² 5 x 6.4
Eco-Mode Is a trademark of Texas Instruments
PowerPAD Is a trademark of Texas Instruments
The TPS54226 is a adaptive on-time D-CAP2™ mode synchronous buck converter. TheTPS54226 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54226 uses the D-CAP2™ mode control which provides a fast transient response with no external compensation components. The adoptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency Eco-Mode operation at light load for high efficiency. The TPS54226 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VCC input, and from 2-V to 18-V VIN input power supply voltage. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable slow start time and a power good function. The TPS54226 is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.