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參數資料
| 型號： | MIC4680BM |
| 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： | 1.3 A SWITCHING REGULATOR, 220 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SOIC-8 |
| 文件頁數： | 1/16頁 |
| 文件大小： | 276K |
| 代理商： | MIC4680BM |
June 2000
1
MIC4680
MIC4680
Micrel
MIC4680
1A 200kHz SuperSwitcher Buck Regulator
Final Information
General Description
The MIC4680 SuperSwitcher is an easy-to-use fixed or
adjustable output voltage step-down (buck) switch-mode
voltage regulator. The 200kHz MIC4680 achieves up to 1.3A
of continuous output current over a wide input range in a
8-lead SOP (small outline package).
The MIC4680 is available in 3.3V and 5V fixed output ver-
sions or adjustable output down to 1.25V.
The MIC4680 has an input voltage range of 4V to 34V, with
excellent line, load, and transient response. The regulator
performs cycle-by-cycle current limiting and thermal shut-
down for protection under fault conditions. In shutdown
mode, the regulator draws less than 2
μ
A of standby current.
The MIC4680 SuperSwitcher regulator requires a mini-
mum number of external components and can operate using
a standard series of inductors and capacitors. Frequency
compensation is provided internally for fast transient re-
sponse and ease of use.
The MIC4680 is available in the 8-lead SOP with a
–40
°
C to +125
°
C junction temperature range.
Typical Applications
SW
L1
68
μ
H
IN
FB
GND
SHDN
C2
220
μ
F
16V
D1
B260A or
SS26
3.3V/1A
MIC4680-3.3BM
C1
15
μ
F
35V
+6V to +34V
SHUTDOWN
ENABLE
5
–
8
4
3
2
1
Power
SOP-8
Fixed Regulator Circuit
SW
L1
68
μ
H
IN
FB
GND
SHDN
C2
220
μ
F
16V
R1
3.01k
R2
2.94k
2.5V/1A
MIC4680BM
C1
15
μ
F
35V
+5V to +34V
SHENABLE
Power
SOP-8
5
–
8
4
3
2
1
D1
B260A or
SS26
Adjustable Regulator Circuit
Features
SO-8 package with up to 1.3A output current
All surface mount solution
Only 4 external components required
Fixed 200kHz operation
3.3V, 5V, and adjustable output versions
Internally compensated with fast transient response
Wide 4V to 34V operating input voltage range
Less than 2
μ
A typical shutdown-mode current
Up to 90% efficiency
Thermal shutdown
Overcurrent protection
Applications
Simple 1A high-efficiency step-down (buck) regulator
Replacement of TO-220 and TO-263 designs
Efficient preregulator (5V to 2.5V, 12V to 3.3V, etc.)
On-card switching regulators
Positive-to-negative converter (inverting buck-boost)
Simple battery charger
Negative boost converter
Higher output current regulator using external FET
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 |
|---|---|
| MIC4680BM TR | 功能描述:IC REG BUCK ADJ 1.3A 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 |
| MIC4680BMTR | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| MIC4680YM | 功能描述:直流/直流開關調節器 1.3A SuperSwitcher in SO-8 (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 |
| MIC4680YM TR | 功能描述:直流/直流開關調節器 1.3A SuperSwitcher in SO-8 (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 |
| MIC4680YMTR | 制造商:Micrel 功能描述:Conv DC-DC Single Step Down 4V to 34V |
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