The TPS5130QPTRQ1 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 TPS5130QPTRQ1 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 TPS5130QPTRQ1 features dead-time control and very low quiescent current.
Feature
- 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
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.
