Datasheet > 16SP100M

16SP100M

更新时间： 2024-02-29 23:53:47

品牌	Logo	应用领域
美国国家半导体 - NSC		电容器控制器时钟
页数	文件大小	规格书
23页	1006K
描述
Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization

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16SP100M 技术参数

生命周期：	Obsolete	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
风险等级：	5.59	其他特性：	ESR MEASURED AT 100KHZ-300KHZ
电容：	100 µF	电容器类型：	ALUMINUM ELECTROLYTIC CAPACITOR
介电材料：	ALUMINUM (SOLID POLYMER)	ESR：	32 m Ω
漏电流：	0.16 mA	安装特点：	THROUGH HOLE MOUNT
负容差：	20%	端子数量：	2
最高工作温度：	105 °C	最低工作温度：	-55 °C
封装形状：	CYLINDRICAL PACKAGE	极性：	POLARIZED
正容差：	20%	额定（直流）电压（URdc）：	16 V
纹波电流：	36.125 mA	表面贴装：	NO
Delta切线：	0.07	端子形状：	WIRE
Base Number Matches：	1

16SP100M 数据手册

March 2006

LM2747

Synchronous Buck Controller with Pre-bias Startup, and

Optional Clock Synchronization

General Description

Features

1% feedback voltage accuracy over temperature

The LM2747 is a high-speed synchronous buck regulator

controller with a feedback voltage accuracy of 1%. It can

provide simple down conversion to output voltages as low as

0.6V. Though the control section of the IC is rated for 3 to 6V,

the driver section is designed to accept input supply rails as

high as 14V. The use of adaptive non-overlapping MOSFET

gate drivers helps avoid potential shoot-through problems

while maintaining high efficiency. The IC is designed for the

more cost-effective option of driving only N-channel MOS-

FETs in both the high-side and low-side positions. It senses

the low-side switch voltage drop for providing a simple,

adjustable current limit.

n Switching frequency from 50 kHz to 1 MHz

n Switching frequency synchronize range 250 kHz to 1

MHz

n Startup with a pre-biased output load

n Power stage input voltage from 1V to 14V

n Control stage input voltage from 3V to 6V

n Output voltage adjustable down to 0.6V

n Power Good flag and shutdown

n Output overvoltage and undervoltage detection

n Low-side adjustable current sensing

n Adjustable soft-start

The LM2747 features a fixed-frequency voltage-mode PWM

control architecture which is adjustable from 50 kHz to 1

MHz with one external resistor. In addition, the LM2747 also

allows the switching frequency to be synchronized to an

external clock signal over the range of 250 kHz to 1 MHz.

This wide range of switching frequency gives the power

supply designer the flexibility to make better tradeoffs be-

tween component size, cost and efficiency.

n Tracking and sequencing with shutdown and soft start

pins

n TSSOP-14 package

Applications

n Down Conversion from 3.3V

n Cable Modem, DSL and ADSL

n Laser Jet and Ink Jet Printers

n Low Voltage Power Modules

n DSP, ASIC, Core and I/O

Features include the ability to startup with a pre-biased load

on the output, soft-start, input undervoltage lockout (UVLO)

and Power Good (based on both undervoltage and overvolt-

age detection). In addition, the shutdown pin of the IC can be

used for providing startup delay, and the soft-start pin can be

used for implementing precise tracking, for the purpose of

sequencing with respect to an external rail.

Typical Application

20150901

DS201509

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