Datasheet > NCP3123MNTXG

NCP3123MNTXG

更新时间： 2024-11-06 12:19:55

品牌	Logo	应用领域
安森美 - ONSEMI		稳压器开关
页数	文件大小	规格书
41页	2417K
描述
Dual 3.0 A, Step-Down DC/DC Switching Regulator

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NCP3123MNTXG 数据手册

NCP3123

Dual 3.0 A, Step-Down

DC/DC Switching Regulator

The NCP3123 is a dual buck converter designed for low voltage

applications requiring high efficiency. This device is capable of

producing an output voltage as low as 0.8 V. The NCP3123 provides

dual 3.0 A switching regulators with an adjustable 200 kHz −

2200 kHz switching frequency. The switching frequency is set by an

external resistor. The NCP3123 also incorporates an auto−tracking

and sequencing feature. Protection features include cycle−by−cycle

current limit and undervoltage lockout (UVLO). The NCP3123 comes

in a 32−pin QFN package.

http://onsemi.com

MARKING DIAGRAM

NCP3123

AWLYYWWG

QFN32

CASE 488AM

Features

• Input Voltage Range from 4.5 V to 13.2 V

• 12 V to 5.0 V = 85% Efficiency Min @ 3.0 A

out

NCP3123= Specific Device Code

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Package

• 200−2200 kHz Operation

• Stable with Low ESR Ceramic Output Capacitor

• 0.8 1.5% FB Reference Voltage

• External Soft−Start

(Note: Microdot may be in either location)

• Out of Phase Operation of OUT1 & OUT2

• Auto−Tracking and Sequencing

• Enable/Disable Capability

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 40 of this data sheet.

• Hiccup Overload Protection

• Low Shutdown Power (I < 100 mA)

Typical Applications

• Set−Top Boxes, Portable Applications, Networking and

Telecommunications

• DSP/mP/FPGA Core

VIN

RVIN

R14

R24

R_TRACK

OUT1

GND

SW1

VIN

PG1

PG2

PG1

PG2

L11

D11

Enable

R11

C11

EN1

Disable

GND

NCP3123

SEQ1

GND

R12

EN2

GND

SEQ2

GND

OUT2

TRACK1,2

SW2

L21

D21

R21

R22

C21

GND

C12

GND

C22

R23

GND

R13

C13

GND

C23

GND

Figure 1. Typical Application Circuit

Publication Order Number:

October, 2008 − Rev. 1

NCP3123/D

12 3 4 5 6 7...41

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