1 Features
1• Three Highly Efficient Programmable Buck
Regulators
– Buck Regulator Outputs:
– Buck 1: 1.1 V to 3.6 V; 1.3 A
– Buck 2: 1.1 V to 3.6 V; 400 mA
– Buck 3: 0.7 V to 1.335 V; 600 mA
– ±3% Feedback Voltage Accuracy
– Up to 95% Efficient Buck Regulators
– 2MHz Switching Frequency for Smaller
Inductor Size
– Integrated FETs with Low RDSON
– Bucks Operate With Their Phases Shifted to
Reduce the Input Current Ripple and Capacitor
Size
– Programmable Output Voltage via the SPI™
Interface
– Overvoltage and Undervoltage Lockout
– Automatic Internal Soft Start With Power-On
Reset
– Current Overload and Thermal Shutdown
Protection
– Bypass Mode Available on Bucks 1 and 2
– PFM Mode for Low-Load, High-Efficiency
Operation
• Low-Dropout LDO 3.2 V, 100 mA
• SPI-Programmable Interrupt Comparator (2 V to 4
V)
• Alternate Buck VOUT Selectable via H/L Logic Pins
• RESET, STANDBY Pins

2 Applications
Solid-State Drives

3 Description
The LM10506 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 LM10506 operates cooperatively with ASIC to
optimize the supply voltage for low-power conditions
and Power Saving modes via the SPI interface. It
also supports a 100-mA LDO and a programmable
Interrupt Comparator.