The TPS54226RGTT is a adaptive on-time D-CAP2 mode synchronous buck converter. TheTPS54226RGTT 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 TPS54226RGTT uses the D-CAP2 mode control which provides afast 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 TPS54226RGTT 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 TPS54226RGTT is available in the 14 pin HTSSOP or 16 pin QFN package, and designed to operate from –40°C to 85°C.
Feature
- D-CAP2 Mode Enables Fast Transient Response
- Low Output Ripple and Allows Ceramic Output Capacitor
- Wide VCC Input Voltage Range: 4.5 V to 18 V
- Wide VIN Input Voltage Range: 2 V to 18 V
- Output Voltage Range: 0.76 V to 5.5 V
- Highly Efficient Integrated FET’s Optimized
for Lower Duty Cycle Applications
– 160 mΩ (High Side) and 110 mΩ (Low Side) - High Efficiency, less than 10 μA at shutdown
- Auto-Skip Eco-Mode for High Efficiency at Light Load
- High Initial Bandgap Reference Accuracy
- Adjustable Soft Start
- Pre-Biased Soft Start
- 700-kHz Switching Frequency (fSW)
- Cycle By Cycle Over Current Limit
- Power Good Output
- Auto-Skip Mode
- APPLICATIONS
- Wide Range of Applications for Low Voltage System
- Digital TV Power Supply
- High Definition Blu-ray Disc Players
- Networking Home Terminal
- Digital Set Top Box (STB)
- Wide Range of Applications for Low Voltage System
