LM26480 Dual 2-MHz, 1.5-A Buck Regulators and Dual 300-mA LDOs With Individual Enable and Power Good

1 Features
1• Input Voltage: 2.8 V to 5.5 V
• Compatible with Advanced Applications
Processors and FPGAs
• Two LDOs for Powering Internal Processor
Functions and I/Os
• Precision Internal Reference
• Thermal Overload Protection
• Current Overload Protection
• External Power-On-Reset Function for Buck1 and
Buck2
• Undervoltage Lockout Detector to Monitor Input
Supply Voltage
• Step-Down DC-DC Converters (Buck)
– 1.5-A Output Current
– VOUT from:
– Buck1 : 0.8 V to 2 V at 1.5 A
– Buck2 : 1 V to 3.3 V at 1.5 A
– Up to 96% efficiency
– ±3% FB Voltage Accuracy
– 2-MHz PWM Switching Frequency
– PWM-to-PFM Automatic Mode Change Under
Low Loads
– Automatic Soft Start
• Linear Regulators (LDO)
– VOUT of 1 V to 3.5 V
– ±3% FB Voltage Accuracy
– 300-mA Output Current
– 25-mV (Typical) Dropout

2 Applications
• Core Digital Power
• Applications Processors
• Peripheral I/O Power
• Digital Radios
• Robot Drives
• Image Transmission Module
• Low-Power Digital Applications