STMicroelectronics | LD49150PT08R

The LD49150PT08R is a high-bandwidth, low-dropout, 1.5 A voltage regulator, ideal for powering core voltages of low-power microprocessors. The LD49150xx implements a dual supply configuration allowing for very low output impedance and very fast transient response.

The LD49150xx requires a bias input supply and a main input supply, allowing for ultra-low input voltages on the main supply rail. The input supply operates from 1.4 V to 5.5 V and the bias supply requires between 3 V and 6 V for proper operation. The LD49150xx offers fixed output voltages from 0.8 V to 1.8 V and adjustable output voltages down to 0.8 V. The LD49150xx requires a minimum output capacitance for stability, and work optimally with small ceramic capacitors.

Features:

• Input voltage range:
• VI = 1.4 V to 5.5 V
• VBIAS = 3 V to 6 V
• Stable with ceramic capacitor
• ±1.5 % initial tolerance
• Maximum dropout voltage (VI - VO) of 200 mV over temperature
• Adjustable output voltage down to 0.8 V
• Ultra fast transient response (up to 10 MHz bandwidth)
• Excellent line and load regulation specifications
• Logic controlled shutdown option
• Thermal shutdown and current limit protection
• Junction temperature range: - 25 °C to 125 °C

Applications:

• Graphics processors
• PC add-in cards
• Microprocessor core voltage supply
• Low voltage digital ICs
• High efficiency linear power supplies
• SMPS post regulators