TPS51125

The TPS51125 is a dual synchronous, step-down controller with 5-V and 3.3-V LDOs from Texas Instruments. It is a cost-effective solution for notebook and netbook system power supplies. The TPS51125 has a wide input voltage range of 5.5 V to 24 V and can deliver up to 3 A of output current on each channel. It also features a number of other features, such as:

±1% reference accuracy
Adaptive on-time D-CAP™ mode control
Programmable soft-start
Programmable output voltage
Overcurrent protection
Thermal protection
Power good signal
The TPS51125 is available in a 20-pin QFN package and is easy to use. It is typically used in conjunction with external inductors and capacitors to form a complete power supply solution.

Here are some of the applications of the TPS51125:

Notebook computers
Netbook computers
Tablet computers
Set-top boxes
Digital signage
Industrial applications
The TPS51125 is a popular choice for designers because of its cost-effectiveness, performance, and ease of use.

Here is a comparison table of the TPS51125 and TPS51216:

Feature TPS51125 TPS51216
Type Dual synchronous, step-down controller with 5-V and 3.3-V LDOs Complete DDR2, DDR3, and DDR3L memory power solution synchronous buck controller, 2-A LDO, buffered reference
Input voltage range 5.5 V to 24 V 3 V to 28 V
Output voltage range 2 V to 5.5 V 0.7 V to 1.8 V
Output current 3 A per channel 2 A
Reference accuracy ±1% 0.8%
Switching frequencies 270 kHz 300 kHz or 400 kHz
Protections Overcurrent protection, thermal protection, power good signal OCL/OVP/UVP/UVLO protections, power good signal
Package 20-pin QFN 20-pin QFN