C1

10 F

L3

2.2 H

3V

1.2V

Low = 1.0V

C6

4.7 F

L1

2.2 H

BUCK1

BUCK2

BUCK3

LDO

SPI

SW_B3

FB_B3

VIN_B3

FB_B2

SW_B2

VIN_B2

SW_B1

VIN_B1

LDO

FB_B1

CS

CLK

DO

DI

VIN

Interrupt

Vcomp

L2

2.2 H

3V

Low = 1.8V

C7

4.7 F

C5

4.7 F

C8

2.2 F

Power Supply

3.3/5.0V

Vcore

1.2V/1A

Host 3

Domain

Host 1

Flash

3.0V/1.6A

Vcc

Vccq

3.0V/1A

Host 2

Domain

LM10504

Host

Controller

Vhost

3.0V/250 mA

System

Control

C2

10 F

C3

10 F

3V

C4

4.7 F

COMP

Reset

VIN_IO

C9

2.2 F

IO input

supply

DevSLP

Voltage Monitored

at Startup

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM10504

SNVS739F – DECEMBER 2011 – REVISED OCTOBER 2016

LM10504 Triple Buck and LDO Power Management Unit

1

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.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LM10504

DSBGA (34)

2.80 mm × 2.80 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Application Schematic