NX2117A

更新时间： 2024-11-30 06:00:43

品牌	Logo	应用领域
美高森美 - MICROSEMI		控制器
页数	文件大小	规格书
14页	408K
描述
SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE

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中文翻译

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数据手册

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NX2117A 数据手册

NX2116/2116A/2116B/2117/2117A

SYNCHRONOUS PWM CONTROLLER WITH

CURRENT LIMIT, POWER GOOD & OVER VOLTAGE

PRELIMINARY DATA SHEET

Pb Free Product

FEATURES

DESCRIPTION

Bus voltage operation from 2V to 25V

Power Good indicator available in NX2116

The NX2116/2117 family of products are synchronous

Buck controller IC designed for step down DC to DC

converter applications. They are optimized to convert

bus voltages from 2V to 25V to as low as 0.8V output

voltage. The NX2116 and 2117 offer an Enable pin that

can be used to program the converter's start up voltage

using an external divider from bus voltage. These prod-

ucts operate at fixed internal frequency of 300kHz, ex-

cept that NX2116A operates at 600kHz and 2116B at

1MHz frequency. These products employ loss-less cur-

rent limiting protection by sensing the Rdson of syn-

chronous MOSFET followed by latch out feature. Feed-

back under voltage triggers Hiccup.

n Fixed 300kHz, 600kHz and 1MHz for NX2116 and

300kHz, 600kHz for NX2117 family.

n Internal Digital Soft Start Function

n Less than 50 nS adaptive deadband

n Enable pin to program BUS UVLO for NX2116/2117

Programmable current limit triggers latch out by

sensing Rdson of

Synchronous MOSFET

No negative spike at Vout during startup and

shutdown

APPLICATIONS

Graphic Card on board converters

Other features are; 5V gate drive, Power good indica-

tor, Adaptive deadband control, Internal digital soft start;

Vcc undervoltage lock out and shutdown capability via

the enable pin or comp pin.

Memory Vddq Supply

On board DC to DC such as 2V to 3.3V, 2.5V or

1.8V

ADSL Modem

TYPICAL APPLICATION

L2 1uH

Vin1

+12V

Cin

1uF

39uF

270uF,18mohm

Vin2

+5V

MBR0530T1

1uF

68k

BST

Hdrv

Vcc

0.1uF

2N3904

OFF

10k

12.4k

L1 1uH

Vout

OCP

Comp

+1.8V,9A

1.5nF

33pF

10k

2x (220uF,12mohm)

R11 3.7k

Ldrv

17.4k

+5V

Pgood

Gnd

R10 1k

R1 20k

16k

2.61k

1nF

^{Figure 1 - Typical application}O^{of 2}R¹¹D⁶ERING INFORMATION

Device

Temperature

0 to 70^oC

Package

MLPD-10L

MSOP-10L

Frequency

300kHz

600kHz

1MHz

300kHz

600kHz

Pb-Free

Yes

NX2116CMTR

NX2116ACMTR

NX2116BCMTR

NX2117CUTR

NX2117ACUTR

Yes

Rev. 3.0

03/14/06

12 3 4 5 6 7...14

中文翻译

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与NX2117A相关器件

型号	品牌	获取价格	描述	数据表
NX2117ACUTR	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE
NX2117CUTR	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT, POWER GOOD & OVER VOLTAGE
NX2119	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION
NX2119A	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION
NX2119ACSTR	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION
NX2119ACUTR	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION
NX2119CSTR	MICROSEMI	获取价格	SYNCHRONOUS PWM CONTROLLER WITH CURRENT LIMIT PROTECTION
NX2124	MICROSEMI	获取价格	300kHz SYNCHRONOUS PWM CONTROLLER
NX2124A	MICROSEMI	获取价格	300kHz SYNCHRONOUS PWM CONTROLLER
NX2124ACSTR	MICROSEMI	获取价格	300kHz SYNCHRONOUS PWM CONTROLLER

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