C1

22 F

L3

2.2 H

1.1V to 3.6V

0.7V to1.335V

C6

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

IRQ

VCOMP

L2

2.2 H

1.1V to 3.6V

C7

C5

4.7 F

C8

Power Supply

3.3/5.0V

VCORE

600 mA

Host 3

Domain

Host 1

Domain

1.3A

VCC

VCCQ

400 mA

Host 2

Domain

LM10506

Host

Controller

VHOST

100 mA

System

Control

C2

22 F

C3

22 F

3.2V

C4

4.7 F

COMP

Reset

STANDBY

VIN_IO

C9

2.2 F

`

IO input

supply

4.7 F

2.2 F

4.7 F

Product

Folder

Sample &

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LM10506

SNVS729F – SEPTEMBER 2011 – REVISED AUGUST 2014

LM10506 Triple Buck + LDO Power Management Unit

1 Features

3 Description

The LM10506 is an advanced PMU containing three

1

•

Three Highly Efficient Programmable Buck

configurable,

high-efficiency

buck

regulators

for

Regulators

supplying variable voltages. The device is ideal for

–

Buck Regulator Outputs:

supporting ASIC and SOC designs for Solid-State

–

Buck 1: 1.1 V to 3.6 V; 1.3 A

and Flash drives.

–

Buck 2: 1.1 V to 3.6 V; 400 mA

The LM10506 operates cooperatively with ASIC to

optimize the supply voltage for low-power conditions

–

Buck 3: 0.7 V to 1.335 V; 600 mA

and Power Saving modes via the SPI interface. It

–

±3% Feedback Voltage Accuracy

also supports a 100-mA LDO and a programmable

–

Up to 95% Efficient Buck Regulators

Interrupt Comparator.

–

2MHz Switching Frequency for Smaller

Device Information(1)

Inductor Size

PART NUMBER

PACKAGE

BODY SIZE (MAX)

–

Integrated FETs with Low RDSON

LM10506

DSBGA (34)

2.84 mm x 2.84 mm

–

Bucks Operate With Their Phases Shifted to

Reduce the Input Current Ripple and Capacitor

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

the end of the datasheet.

Size

space

–

Programmable Output Voltage via the SPI™

Interface

space

–

Overvoltage and Undervoltage Lockout

space

–

Automatic Internal Soft Start With Power-On

Reset

Simplified Schematic

–

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

1

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.