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.