Datasheet > NX2715

NX2715

更新时间： 2024-11-02 06:00:39

品牌	Logo	应用领域
美高森美 - MICROSEMI		控制器手机
页数	文件大小	规格书
21页	715K
描述
SINGLE CHANNEL MOBILE PWM CONTROLLER WITH NMOS LDO CONTROLLER, PGOOD INDICATOR AND ENABLE

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NX2715 数据手册

NX2715

SINGLE CHANNEL MOBILE PWM CONTROLLER WITH NMOS

LDO CONTROLLER, PGOOD INDICATOR AND ENABLE

ADVANCE DATA SHEET

Pb Free Product

FEATURES

DESCRIPTION

Bus voltage operation from 7V to 24V

The NX2715 controller IC is a compact synchronous

Buck controller IC with 16 lead MLPQ package de-

signed for step down DC to DC converter applica-

tions with feedforward functionality. Voltage

feedforward provides fast response, good line regula-

tion and nearly constant power stage gain under wide

voltage input range. The NX2715 controller is optimized

to convert single supply up to 24V bus voltage to as

low as 0.8V output voltage. Internal UVLO keeps the

controller off until the bus supply voltage exceeds 7V

where internal digital soft starts get initiated to ramp

up output. The NX2715 employs NMOS LDO control-

ler, programmable current limiting and FB UVLO fol-

lowed by latchout feature. Other features include: 5V

gate drive, programmable frequency, over voltage pro-

tection, adaptive deadband control and Vcc under volt-

age lockout.

Less than 1uA shutdown current with Enable low

Excellent dynamic response with input voltage

feed-forward and voltage mode control

Programmable switching frequency

Internal digital soft start function

Programmable current limit triggers latch out

FB UVLO followed by latch out feature

NMOS LDO controller available

Power Good indicator available

Start into precharged output

Pb-free and RoHS compliant

APPLICATIONS

Notebook PC

Graphic Card on board converters

On board DC to DC such as

12V to 3.3V, 2.5V or 1.8V

Set Top Box and LCD Display

TYPICAL APPLICATION

VIN1

+7V to 20V

33uF(25V POSCAP)

MBR0530T1

VIN

BST

1uF

0.1uF

HDRV

1.5uH

VOUT1

+1.25V@10A

VIN3

+5V

PVCC

VCC

OCP

3.9nF

2*2R5TPE330MC

LDRV

PGND

6.98k

1uF

2.49k

18nF

12.4k

COMP

1nF

MTD3055

LDO OUT

LDO FB

100k

PGOOD

AGND

2.7k

2.7nF

4.22k

VOUT2

+1V@2A

(PAD)

22uF ceramic

Figure1 - Typical application of NX2715

ORDERING INFORMATION

Device

NX2715CMTR

Temperature

0 to 70^oC

Package

MLPQ -16L

Frequency

200kHz to 1MHz

Pb-Free

Yes

Rev. 1.4

01/08/08

12 3 4 5 6 7...21

中文翻译

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