TC1303B Overview
Description
The TC1303/TC1304 combines a 500 mA synchronous buck regulator and 300 mA Low-Dropout Regulator (LDO) with a power-good monitor to provide a highly integrated solution for devices that require multiple supply voltages. The unique combination of an integrated buck switching regulator and low-dropout linear regulator provides the lowest system cost for dual-output voltage applications that require one lower processor core voltage and one higher bias voltage.
Key Features
- Dual-Output Regulator (500 mA Buck Regulator and 300 mA Low-Dropout Regulator)
- Power-Good Output with 300 ms Delay
- Total Device Quiescent Current = 65 µA, Typ
- Independent Shutdown for Buck and LDO Outputs (TC1303)
- Both Outputs Internally Compensated
- Synchronous Buck Regulator
- Over 90% Typical Efficiency
- 2.0 MHz Fixed-Frequency PWM (Heavy Load)
- Low Output Noise
- Automatic PWM to PFM mode transition
