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参数资料
| 型号： | MIC4680BM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.3A 8SOIC |
| 标准包装： | 2,500 |
| 系列： | SuperSwitcher™ |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 1.25V |
| 输入电压： | 4 V ~ 34 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 200kHz |
| 电流 - 输出： | 1.3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-SOIC |
| 其它名称： | MIC4680BMTR |
MIC4680
1A 200kHz SuperSwitcher?
Buck Regulator
General Description
Features
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-pin SOIC.
The MIC4680 is available in 3.3V and 5V fixed output
versions 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 shutdown for protection under fault conditions. In
shutdown mode, the regulator draws less than 2μA of
standby current.
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SOIC-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 2μA typical shutdown-mode current
Up to 90% efficiency
Thermal shutdown
Overcurrent protection
The MIC4680 SuperSwitcher? regulator requires a mini-
mum number of external components and can operate
Applications
using a standard series of inductors and capacitors.
Frequency compensation is provided internally for fast
transient response and ease of use.
The MIC4680 is available in the 8-pin SOIC with a
–40°C to +125°C junction temperature range.
Typical Application
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Simple 1A high-efficiency step-down (buck) regulator
Replacement of TO-220 and TO-263 designs
Efficient pre-regulator (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
+6V to +34V
C1
15μF
SHUTDOWN 35V
ENABLE
Power
SOIC-8
2
1
MIC4680-3.3BM
IN SW
SHDN FB
GND
5–8
3
4
L1
68μH
D1
B260A or
SS26
3.3V/1A
C2
220μF
16V
+5V to +34V
C1
15μF
SHUTDOWN 35V
ENABLE
Power
SOIC-8
2
1
MIC4680BM
IN SW
SHDN FB
GND
5–8
3
4
L1
68μH
D1
B260A or
SS26
R1
3.01k
R2
2.94k
2.5V/1A
C2
220μF
16V
Fixed Regulator Circuit
Adjustable Regulator Circuit
SuperSwitcher is a trademark of Micrel, Inc.
Micrel Inc. ? 2180 Fortune Drive ? San Jose, CA 95131 ? USA ? tel +1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com
March 2008
M9999-032808
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC4680YM | 功能描述:直流/直流开关调节器 1.3A SuperSwitcher in SO-8 (Lead Free) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MIC4680YM TR | 功能描述:直流/直流开关调节器 1.3A SuperSwitcher in SO-8 (Lead Free) RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| MIC4680YMTR | 制造商:Micrel 功能描述:Conv DC-DC Single Step Down 4V to 34V |
| MIC4680YM-TR | 功能描述:Buck, Buck-Boost Switching Regulator IC Positive Adjustable 1.23V 1 Output 1.3A 8-SOIC (0.154", 3.90mm Width) 制造商:microchip technology 系列:SuperSwitcher?? 包装:剪切带（CT） 零件状态:有效 功能:降压，升压/降压 输出配置:正 拓扑:降压，降压-升压 输出类型:可调式 输出数:1 电压 - 输入（最小值）:4V 电压 - 输入（最大值）:34V 电压 - 输出（最小值/固定）:1.23V 电压 - 输出（最大值）:32.98V 电流 - 输出:1.3A 频率 - 开关:200kHz 同步整流器:无 工作温度:-40°C ~ 125°C （TJ） 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SOIC 标准包装:1 |
| MIC4681 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2A-Peak SuperSwitcher⑩ SOP-8 Buck Regulator |
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