ADP5050ACPZ-R7 datasheet(1/60 Pages) AD

部件名	ADP5050ACPZ-R7

功能描述	5-Channel Integrated Power Solution with Quad Buck Regulators and 200 mA LDO Regulator

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制造商	AD [Analog Devices]

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5-Channel Integrated Power Solution with Quad

Buck Regulators and 200 mA LDO Regulator

Data Sheet

ADP5050

Rev. 0

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FEATURES

Wide input voltage range: 4.5 V to 15 V

±1.5% output accuracy over full temperature range

250 kHz to 1.4 MHz adjustable switching frequency

Adjustable/fixed output options via factory fuse or I2C interface

I2C interface with interrupt on fault conditions

Power regulation

Channel 1 and Channel 2: programmable 1.2 A/2.5 A/4 A

sync buck regulators with low-side FET driver

Channel 3 and Channel 4: 1.2 A sync buck regulators

Channel 5: 200 mA low dropout (LDO) regulator

Single 8 A output (Channel 1 and Channel 2 operated in parallel)

Dynamic voltage scaling (DVS) for Channel 1 and Channel 4

Precision enable with 0.8 V accurate threshold

Active output discharge switch

Programmable phase shift in 90° steps

Individual channel FPWM/PSM mode selection

Frequency synchronization input or output

Optional latch-off protection on OVP/OCP failure

Power-good flag on selected channels

Low input voltage detection

Overheat detection on junction temperature

UVLO, OCP, and TSD protection

48-lead, 7 mm × 7 mm LFCSP package

−40°C to +125°C junction temperature

APPLICATIONS

Small cell base stations

FPGA and processor applications

Security and surveillance

Medical applications

TYPICAL APPLICATION CIRCUIT

CHANNEL 2

BUCK REGULATOR

(1.2A/2.5A/4A)

CHANNEL 3

BUCK REGULATOR

(1.2A)

OSCILLATOR

INT VREG

100mA

Q1

Q2

L1

L2

VREG

SYNC/MODE

RT

FB1

BST1

SW1

DL1

PGND

DL2

SW2

BST2

FB2

L3

BST3

SW3

FB3

PGND3

ALERT

L4

BST4

SW4

FB4

PGND4

nINT

VREG

PVIN1

COMP1

EN1

PVIN2

COMP2

EN2

PVIN3

SS34

COMP3

EN3

VDDIO

PVIN4

COMP4

EN4

SCL

SDA

C2

C1

C4

C3

C5

C6

C7

C8

C9

C10

C11

C12

C13

4.5V TO 15V

VOUT1

VOUT2

VOUT3

VOUT4

RILIM1

RILIM2

I2C

PWRGD

VREG

EXPOSED PAD

SS12

C0

VDD

CHANNEL 5

200mA LDO

REGULATOR

FB5

PVIN5

EN5

VOUT5

C14

C15

VOUT5

1.7V TO 5.5V

ADP5050

CHANNEL 1

BUCK REGULATOR

(1.2A/2.5A/4A)

CHANNEL 4

BUCK REGULATOR

(1.2A)

Figure 1.

GENERAL DESCRIPTION

The ADP5050 combines four high performance buck regulators

and one 200 mA low dropout (LDO) regulator in a 48-lead LFCSP

package that meets demanding performance and board space

requirements. The device enables direct connection to high input

voltages up to 15 V with no preregulators.

Channel 1 and Channel 2 integrate high-side power MOSFETs and

low-side MOSFET drivers. External NFETs can be used in low-side

power devices to achieve an efficiency optimized solution and

deliver a programmable output current of 1.2 A, 2.5 A, or 4 A.

Combining Channel 1 and Channel 2 in a parallel configuration

can provide a single output with up to 8 A of current.

Channel 3 and Channel 4 integrate both high-side and low-side

MOSFETs to deliver output current of 1.2 A.

The switching frequency of the ADP5050 can be programmed

or synchronized to an external clock. The ADP5050 contains a

precision enable pin on each channel for easy power-up sequencing

or adjustable UVLO threshold.

The ADP5050 integrates a general-purpose LDO regulator with

low quiescent current and low dropout voltage that provides up

to 200 mA of output current.

The optional I2C interface provides the user with flexible

configuration options, including adjustable and fixed output

voltage options, junction temperature overheat warning, low

input voltage detection, and dynamic voltage scaling (DVS).

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