The TPS5130 is composed of three independent synchronous buck regulator controllers (SBRC) and one low dropout (LDO) regulator controller. On-chip high-side and low-side synchronous rectifier drivers are integrated to drive less expensive N-channel MOSFETs. The LDO controller can also drive an external N-channel MOSFET. Because the input current ripple is minimized by operating 180° out of phase, it allows a smaller input capacitance, resulting in reduced power supply cost. The SBRC of the TPS5130 automatically adjusts from PWM mode to SKIP mode to maintain high efficiency under light-load conditions. Resistorless current protection for the synchronous buck controller and the fixed high-side driver voltage simplifies the system design and reduces the external parts count. The LDO controller has a current-limit protection and overshoot protection to suppress output voltage spikes at load transient. To further extend battery life, the TPS5130 features dead-time control and very low quiescent current.

• Qualified for Automotive Applications
• Three Independent Step-Down DC/DC Controllers and One LDO Controller
• Input Voltage Range
  • Switcher: 4.5 V to 28 V
  • LDO: 1.1 V to 3.6 V
• Output Voltage Range
  • Switcher: 0.9 V to 8.5 V
  • LDO: 0.9 V to 2.5 V
• Synchronous for High Efficiency
• Precision Vref (±1.5%)
• PWM Mode Control : 500-kHz Operation (Max)
• Auto PWM/SKIP Mode Available
• High-Speed Error Amplifier
• Overcurrent Protection With Temperature Compensation Circuit for Each Channel
• Overvoltage and Undervoltage Protection
• Programmable Short-Circuit Protection
• Power Good Output (PGOUT) With Programmable Delay Time
• 5-V and 3.3-V Linear Regulators
• APPLICATIONS
  • Notebook PCs, PDAs
  • Consumer Game Systems
  • DSP Applications