参数资料
| 型号： | MIC2169BYMME |
| 厂商： | Micrel Inc |
| 文件页数： | 18/25页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 10-MSOP |
| 特色产品： | MIC2169B Buck Control IC |
| 标准包装： | 100 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 550kHz |
| 占空比： | 92% |
| 电源电压： | 3 V ~ 14.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 产品目录页面： | 1092 (CN2011-ZH PDF) |
| 其它名称： | 576-3545-5 |
Micrel, Inc.
MOSFETs
Others
MIC2169B
?
Low gate charge MOSFETs should be used to
maximize efficiency, such as Si4800, Si4804BDY,
?
Connect the current limiting (R2) resistor directly to
the drain of top MOSFET Q3.
IRF7821, IRF8910, FDS6680A and FDS6912A, etc.
RC Snubber
? Add a RC snubber of 1.4 ? resistor and a 1000pF
capacitor from the switch node to ground pin. Place
the snubber on the same side of the board and as
close to the MOSFETs as possible. See page 8,
Current Limiting section for more detail.
Schottky Diode (Optional)
? Place the Schottky diode on the same side of the
board as the MOSFETs and V IN input capacitor.
? The connection from the Schottky diode’s Anode to
the input capacitors ground terminal must be as
short as possible.
?
The diode’s Cathode connection to the switch node
?
?
?
The feedback resistors R3 and R4/R5/R6 should be
placed close to the FB pin. The top side of R3
should connect directly to the output node. Run this
trace away from the switch node (junction of Q3, Q2,
and L1). The bottom side of R3 should connect to
the GND pin on the MIC2169B.
The compensation resistor and capacitors should be
placed right next to the COMP pin and the other side
should connect directly to the GND pin on the
MIC2169B rather than going to the plane.
Add a place holder for a gate resistor on the top
MOSFET gate drive. Do not use a resistor in series
with the low-side MOSFET gate.
(SW) must be keep as short as possible.
Evaluation Board Schematics
MIC2169B Evaluation Board Schematic
April 2010
18
M9999-041210-B
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相关代理商/技术参数 |
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|---|---|
| MIC2169BYMME TR | 功能描述:直流/直流开关转换器 Synchronous Step Down Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MIC2169MM | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:500 KHZ PWM SYNCHRONOUS BUCK CONTROL IC |
| MIC2169YMM | 功能描述:直流/直流开关调节器 Replaced by MIC2169AYMM (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 |
| MIC2169YMM TR | 功能描述:直流/直流开关调节器 Replaced by MIC2169AYMM TR (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 |
| MIC2171 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:100kHz 2.5A Switching Regulator Preliminary Information |
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