TPS5130集成电路（IC）的线性稳压器控制器规格书PDF中文资料

TPS5130属于集成电路（IC）的线性稳压器控制器。由德州仪器制造生产的TPS5130稳压器 - 线性 + 开关此产品族中的产品用于构建执行 DC-DC 转换或电压调节功能的电路，采用的是开关模式和线性稳压器功能的组合。虽然具体的拓扑各不相同，但此类产品的主要目的是将开关模式技术的效率优势与线性稳压技术的低噪声特性结合在一起。

1FEATURES

· 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

DESCRIPTION

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.