Datasheet > MIC2179YSM-TR

MIC2179YSM-TR

更新时间： 2024-01-25 13:22:23

品牌	Logo	应用领域
美国微芯 - MICROCHIP		开关光电二极管
页数	文件大小	规格书
13页	340K
描述
6A SWITCHING REGULATOR, 240kHz SWITCHING FREQ-MAX, PDSO20

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技术参数
数据手册

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MIC2179YSM-TR 技术参数

是否Rohs认证：	符合	生命周期：	Active
包装说明：	LEAD FREE, MO-150, SSOP-20	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.68	其他特性：	ALSO OPERATES IN ADJUSTABLE MODE FROM 1.25 TO 16.5V
模拟集成电路 - 其他类型：	SWITCHING REGULATOR	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	16.5 V
最小输入电压：	4.5 V	标称输入电压：	7 V
JESD-30 代码：	R-PDSO-G20	JESD-609代码：	e3
长度：	7.2 mm	湿度敏感等级：	2
功能数量：	1	端子数量：	20
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	6 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	2 mm
表面贴装：	YES	切换器配置：	BUCK
最大切换频率：	240 kHz	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn) - annealed	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	5.3 mm
Base Number Matches：	1

MIC2179YSM-TR 数据手册

Micrel, Inc.

MIC2179

1.5A Synchronous Buck Regulator

General Description

Features

The Micrel MIC2179 is a 200kHz synchronous buck (step-

down) switching regulator designed for high-efﬁciency, bat-

tery-powered applications.

• 4.5V to 16.5V input voltage range

• Dual-mode operation for high efﬁciency (up to 96%)

PWM mode for > 150mA load current

Skip mode for <150mA load current

• 150mΩ internal power MOSFETs at 12V input

• 200kHz preset switching frequency

• Low quiescent current

TheMIC2179operatesfroma4.5Vto16.5Vinputandfeatures

internal power MOSFETs that can supply up to 1.5A output

current. It can operate with a maximum duty cycle of 100%

for use in low-dropout conditions. It also features a shutdown

mode that reduces quiescent current to less than 5µA.

1.0mA in PWM mode

600µA in skip mode

< 5µA in shutdown mode

The MIC2179 achieves high efﬁciency over a wide output

current range by operating in either PWM or skip mode. The

operating mode is externally selected, typically by an intel-

ligentsystem,whichchoosestheappropriatemodeaccording

to operating conditions, efﬁciency, and noise requirements.

The switching frequency is preset to 200kHz and can be

synchronized to an external clock signal of up to 300kHz.

• Current-mode control

Simpliﬁed loop compensation

Superior line regulation

• 100% duty cycle for low dropout operation

• Current limit

• Thermal shutdown

TheMIC2179usescurrent-modecontrolwithinternalcurrent

sensing. Current-mode control provides superior line regula-

tionandmakestheregulatorcontrolloopeasytocompensate.

The output is protected with pulse-by-pulse current limiting

andthermalshutdown. Undervoltagelockoutturnstheoutput

off when the input voltage is less than 4.5V.

• Undervoltage lockout

Applications

• High-efﬁciency, battery-powered supplies

• Buck (step-down) dc-to-dc converters

• Cellular telephones

• Laptop computers

• Hand-held instruments

• Battery Charger

The MIC2179 and is packaged in a 20-lead SSOP package

with an operating temperature range of –40°C to +85°C.

Typical Application

V_IN

5.4V to 16.5V

10µF

16,17

20V

VIN

20k

22µH

3,4

V_OUT

PGND

3.3V/600mA

Output Good

Output Low

MBRM120

PWRGD

1,2,

MIC

2179-3.3

19,20

100µF

6.3V

Skip Mode

PWM Mode

PWM

SYNC

COMP

SGND

9–12

BIAS

0.01µF

4.02k

Pins 4 and 18 are not connected.

6.8nF

Pins 3 and 4 can be connected

together for a low-impedance

connection.

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

June 2009

M9999-063009

12 3 4 5 6 7...13

中文翻译

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与MIC2179YSM-TR相关器件

型号	品牌	获取价格	描述	数据表
MIC2182	MICREL	获取价格	High-Efficiency Synchronous Buck Controller Final Information
MIC2182	MICROCHIP	获取价格	MIC2182 is a synchronous buck (step-down) switching regulator controller. An all N-Chann
MIC2182_04	MICREL	获取价格	High-Efficiency Synchronous Buck Controller
MIC2182-3.3BM	MICREL	获取价格	High-Efficiency Synchronous Buck Controller Final Information
MIC2182-3.3BM	MICROCHIP	获取价格	Switching Controller, Current-mode, 0.1A, 330kHz Switching Freq-Max, BICMOS, PDSO16, SOP-1
MIC2182-3.3BSM	MICROCHIP	获取价格	SWITCHING CONTROLLER, 330kHz SWITCHING FREQ-MAX, PDSO16
MIC2182-3.3BSM	MICREL	获取价格	High-Efficiency Synchronous Buck Controller Final Information
MIC2182-3.3BSMTR	MICREL	获取价格	SWITCHING CONTROLLER, 330kHz SWITCHING FREQ-MAX, PDSO16, SSOP-16
MIC2182-3.3BSM-TR	MICROCHIP	获取价格	SWITCHING CONTROLLER, 330kHz SWITCHING FREQ-MAX, PDSO16
MIC2182-3.3YM	MICROCHIP	获取价格	SWITCHING CONTROLLER, 330kHz SWITCHING FREQ-MAX, PDSO16

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