MIC4682

更新时间： 2024-11-18 22:51:23

品牌	Logo	应用领域
麦瑞 - MICREL		稳压器
页数	文件大小	规格书
15页	227K
描述
PRECISION CURRENT LIMIT SO-8 SUPERSWITCHER BUCK REGULATOR

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中文翻译

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MIC4682 数据手册

MIC4682

Micrel

MIC4682

Precision Current Limit SO-8 SuperSwitcher™ Buck Regulator

General Description

Features

The MIC4682 is an easy-to-use step-down (buck) switch-

mode voltage regulator. It features a programmable current

limit that allows 10% current limit accuracy over its full

operating temperature range. The precision current limit

makes the MIC4682 ideal for constant-voltage constant-

current applications, such as simple battery chargers. The

precision current limit also gives designers the ability to set

the maximum output current below the saturation current

rating of the inductor. This allows the use of the smallest

possible inductors for a given application, saving valuable

space and cost.

• Programmable output current limit

• 10% accuracy over temperature

• Wide 4V to 34V operating input voltage range

• Fixed 200kHz PWM operation

• Power SO-8 package allows 2A continuous output

current

• All surface mount solution

• Internally compensated

• Less than 1µA typical shutdown-mode current

• Thermal shutdown protection

Applications

• Battery chargers

• White LED drivers

• Constant voltage constant current step-down converters

• Simple step-down regulator with precise current limit

• USB power supplies

The MIC4682 is a very robust device. Its 4V to 34V input

voltage range allows the MIC4682 to safely be used in

applications where voltage transients may be present. Addi-

tional protection features include cycle-by-cycle current lim-

iting and over-temperature shutdown. The MIC4682 is avail-

ableinathermallyoptimizedpowerSO-8packagethatallows

it to achieve 2A of continuous output current.

The MIC4682 requires a minimum number of external com-

ponents and can operate using a standard series of induc-

tors. Compensation is provided internally for fast transient

response and ease of use. The MIC4682 is available in the 8-

lead power SOP with a –40°C to +125°C junction tempera-

ture range.

Typical Application

MIC4682 Current Limit

Characteristics

MIC4682

+7.5V to +34V

5V/1A

10µF

50V

68µH

3.01k

220µF

SHDN

(x2)

10V

B240

976Ω

10M

ISET

GND

2, 6, 7

16.2k

V_IN= 12V

0.5

1.5

CURRENT LIMIT (A)

Constant Current/Constant Voltage Li Ion Battery Charger

SuperSwitcher is a trademark of Micrel, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

M0334-102203

October 2003

12 3 4 5 6 7...15

中文翻译

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与MIC4682相关器件

型号	品牌	获取价格	描述	数据表
MIC4682_07	MICREL	获取价格	Precision Current Limit SOIC-8 SuperSwitcher⑩
MIC4682BM	MICREL	获取价格	PRECISION CURRENT LIMIT SO-8 SUPERSWITCHER BUCK REGULATOR
MIC4682BM	ROCHESTER	获取价格	1.1A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
MIC4682BMTR	MICREL	获取价格	Switching Regulator, Voltage-mode, 1.1A, 220kHz Switching Freq-Max, PDSO8, SOIC-8
MIC4682YM	ROCHESTER	获取价格	1.1 A SWITCHING REGULATOR, 220 kHz SWITCHING FREQ-MAX, PDSO8, SOIC-8
MIC4682YMTR	MICREL	获取价格	1.1A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOIC-8
MIC4682YM-TR	MICREL	获取价格	1.1A SWITCHING REGULATOR, 220kHz SWITCHING FREQ-MAX, PDSO8
MIC4684	MICREL	获取价格	2A High-Efficiency SuperSwitcher Buck Regulator
MIC4684	MICROCHIP	获取价格	The MIC4684 is a high-efficiency 200kHz stepdown (buck) switching regulator. Power conve
MIC4684_10	MICREL	获取价格	2A High-Efficiency SuperSwitcher Buck Regulator

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