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

600 mA

Host 3

Domain

Host 1

Domain

1.3A

400 mA

Host 2

Domain

LM10506

Host

Controller

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

LM10506

SNVS729F – SEPTEMBER 2011 – REVISED AUGUST 2014

www.ti.com

9 Application and Implementation

9.1 Application Information

The LM10506 device provides 4 regulated outputs from 3 step-down switching regulators and one linear

regulator. The regulated outputs are achieved using a minimum of external components. To support low load

conditions within an application the device may be placed in a low power mode - STANDBY.

A 4-wire SPI interface may be used to reconfigure the device outputs and return an indication of output status. A

separate device output provides an Interrupt signal when the device status changes. All programmed settings

may be returned to default state via a RESET input.

9.2 Typical Application

Figure 25. LM10506 Typical Application

28

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