The TPS51123 is a cost effective, dual-synchronous buck controller targeted for notebook system power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The TPS51123 supports high efficiency, fast transient responses and provides a combined power-good signal. Out-ofAudio™ mode light-load operation enables low acoustic nois.
1
•2 Wide-Input Voltage Range: 5.5 V to 28 V
• Output Voltage Range: 2 V to 5.5 V
• Built-in 100-mA 5-V/3.3-V LDO with Switches
• Built-in 1% 2-V Reference Output
• With/Without Out-of-Audio™ Mode Selectable
Light-Load and PWM only Operation
• Internal 1.6-ms Voltage Servo Softstart
• Adaptive On-Time Control Architecture with
Four Selectable Frequency Setting
• 4500 ppm/°C RDS(on) Current Sensing
• Built-In Output Discharge
• Power Good Output
• Built-in OVP/UVP/OCP
• Thermal Shutdown (Non-latch)
• 24-Pin QFN (RGE) Package
APPLICATIONS
• Notebook Computers
• I/O Supplies
• System Power Suppl.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | TPS51120 |
Texas Instruments |
Synchronous Step-Down Controller | |
2 | TPS51123A |
Texas Instruments |
Step-Down Controller | |
3 | TPS51124 |
Texas Instruments |
Dual Synchronous Step-Down Controller | |
4 | TPS51125 |
Texas Instruments |
Step-Down Controller | |
5 | TPS51125A |
Texas Instruments |
Step-Down Controller | |
6 | TPS5110 |
Texas Instruments |
Synchronous Buck PWM Controller | |
7 | TPS51100 |
Texas Instruments |
Source DDR Termination Regulator | |
8 | TPS51103 |
Texas Instruments |
INTEGRATED LDO | |
9 | TPS51113 |
Texas Instruments |
SYNCHRONOUS BUCK CONTROLLER | |
10 | TPS51116 |
Texas Instruments |
Synchronous Buck Controller | |
11 | TPS51116-EP |
Texas Instruments |
Synchronous Buck Controller | |
12 | TPS51117 |
Texas Instruments |
Single Synchronous Step-Down Controller |