1 Features
1• Three High-Efficiency Programmable Buck
Regulators
– Integrated FETs With Low RDSON
– Bucks Operate With Their Phases Shifted to
Reduce the Input Current Ripple and Capacitor
Size
– Programmable Output Voltage Through the
SPI Interface
– Overvoltage and Undervoltage Lockout
– Automatic Internal Soft Start With Power-On
Reset
– Current Overload and Thermal Shutdown
Protection
– PFM Mode for Low-Load, High-Efficiency
Operation
• Power-Down Data Protection Enhances Data
Integrity
– Bypass Mode Available on Bucks 1 and 2
• Deep Sleep Mode to Save Power During Idle
Times With DevSLP Function
• Programmable Low-Dropout LDO 1.2 V to 3.1 V,
up to 250 mA
• SPI-Programmable Interrupt Comparator
(2 V to 4 V)
• Alternate Buck VOUTS Selectable Through VSELECT
Logic Pins
• Customizable Start-Up Sequencing for Varied
Controllers
• RESET Pin
• Programmable Buck Regulators:
– Buck 1: 1.1 V to 3.6 V at 1.6 A
– Buck 2: 1.1 V to 3.6 V at 1 A
– Buck 3: 0.7 V to 1.335 V at 1 A
• ±3% Feedback Voltage Accuracy
• Up to 95% Efficient Buck Regulators
• 2-MHz Switching Frequency for Smaller Inductor
Size

2 Applications
Solid-State Drives

3 Description
The LM10504 is an advanced PMU containing three
configurable, high-efficiency buck regulators for
supplying variable voltages. The device is ideal for
supporting ASIC and SOC designs for solid-state and
flash drives.
The LM10504 operates cooperatively with ASIC to
optimize the supply voltage for low-power conditions
and power saving modes through the SPI interface. It
also supports a 250-mA LDO and a programmable
interrupt comparator.