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參數資料
| 型號： | MIC4690BM |
| 廠商： | MICREL INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 150000 SYSTEM GATE 2.5 VOLT FPGA - NOT RECOMMENDED for NEW DESIGN |
| 中文描述： | SWITCHING REGULATOR, 550 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | SOP-8 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 225K |
| 代理商： | MIC4690BM |
June 2001
1
MIC4690
MIC4690
Micrel
MIC4690
500kHz 1A SuperSwitcher Buck Regulator
Final Information
General Description
The MIC4690 SuperSwitcher is an easy-to-use, 500kHz
step-down PWM voltage regulator. The MIC4690 achieves
over 1A of continuous output current over a wide input voltage
range in an 8-lead SO (small outline) package.
The high switching frequency of the MIC4690 allows the
smallest surface-mount inductors and capacitors to be used.
Internal compensation ensures fast transient response and a
minimum amount of external components.
The MIC4690 features a power SO-8 package with a special
lead frame that allows over 1A of continuous current. The
MIC4690, housed in an SO-8, can replace larger TO-220 and
TO-263 packages in many applications.
The MIC4690 allows for a high degree of safety. It has a wide
input voltage range of 4V to 34V, allowing for it to be used in
applications where input voltage transients may be present.
Built-in safety features include over-current protection, fre-
quency foldback protection, and thermal shutdown.
The MIC4690 is available in an 8-lead SO package with a
junction temperature range of –40
°
C to +125
°
C.
Typical Application
SW
L1
10μH
VIN
FB
GND
SHDN
C2
100μF
4V
R1
3.01k
R2
2.94k
2.5V/1A
MIC4690BM
C1
22μF
10V
5V
SHUTDOWN
ENABLE
Power
SOP-8
5D8
4
3
2
1
D1
2A
20V
2.5V Adjustable Converter
SW
L1
18
μ
H
VIN
FB
GND
SHDN
C2
220
μ
F
4V
R1
3.01k
R2
6.49k
1.8V/1A
MIC4690BM
C1
22
μ
F
10V
4V to 30V
(34V Transient)
SHUTDOWN
ENABLE
Power
SOP-8
5D8
4
3
2
1
D1
2A
20V
1.8V Adjustable Converter
Features
SO-8 package with over 1A output current
Fixed 500kHz operation
Wide 4V to 34Vinput voltage range
Output voltage adjustable to 1.23V
All surface mount solution
Internally compensated with fast transient response
Up to 85% efficiency
Overcurrent protection
Frequency foldback short-circuit protection
Thermal shutdown
Applications
Simple 1A step-down (buck) regulator
Replacement of TO-220 and TO-263 designs
12V to 5V/3.3V/2.5V/1.8V/1.5V conversion
5V to 2.5V/1.8V/1.5V conversion
On-card switching regulators
Hard disk drives
Cable modems
Positive-to-negative converters
Simple battery chargers
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
SuperSwitcher is a trademark of Micrel, Inc.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MIC4690BM TR | 功能描述:IC REG BUCK ADJ 1A 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩壓器 - DC DC 開關穩壓器 系列:SuperSwitcher™ 標準包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數:1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關:52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應商設備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| MIC4690YM | 功能描述:直流/直流開關調節器 SO-8 500KHz Simple Buck Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC4690YM TR | 功能描述:直流/直流開關調節器 SO-8 500KHz Simple Buck Regulator (Lead Free) RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MIC4690YM | 制造商:Micrel Inc 功能描述:Voltage Regulator IC |
| MIC4690YMG11 | 制造商:Micrel 功能描述:The Micrel MIC4690YMG11 is a 1A Synchronous Buck Regulator. |
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