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参数资料
| 型号： | MIC2204YML TR |
| 厂商： | Micrel Inc |
| 文件页数： | 10/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.6A 10MLF |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 可调至 1V |
| 输入电压： | 2.3 V ~ 5.5 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘，10-MLF? |
| 包装： | 标准包装 |
| 供应商设备封装： | 10-MLF?（3x3） |
| 产品目录页面： | 1092 (CN2011-ZH PDF) |
| 其它名称： | 576-1070-6 |
MIC2204
PWM Operation
The MIC2204 is a pulsewidth modulation (PWM) controller.
By controlling the ratio of on-to-off time, or duty cycle, a
regulated DC output voltage is achieved. As load or supply
voltage changes, so does the duty cycle to maintain a
constant output voltage. In cases where the input supply runs
into a dropout condition, the MIC2204 will run at 100% duty
cycle.
The MIC2204 provides constant switching at 2MHz with
synchronous internal MOSFETs. The internal MOSFETs
include a high-side P-Channel MOSFET from the input
supply to the switch pin and an N-Channel MOSFET from the
switch pin to ground. Since the low-side N-Channel MOSFET
provides the current during the off cycle, a free wheeling
Schottky diode from the switch node to ground is not required.
PWM control provides fixed frequency operation. By main-
taining a constant switching frequency, predictable funda-
mental and harmonic frequencies are achieved. Other meth-
ods of regulation, such as burst and skip modes, have
frequency spectrums that change with load and can interfere
with sensitive communication equipment.
Micrel, Inc.
Synchronization
SYNC_IN allows the user to change the frequency from
2MHz up to 2.5MHz or down to 1.8MHz. This controls the
fundamental frequency and all the resultant harmonics. Main-
taining a predictable frequency creates the ability to either
shift the harmonics away from sensitive carrier and IF fre-
quency bands, or to accurately filter out specific harmonic
frequencies.
Connecting the SYNC_OUT function pin to the SYNC_IN of
other MIC2204s will synchronize multiple MIC2204s in a
daisy-chain. Synchronizing multiple MIC2204s means that
regulators will run at the same fundamental frequency, result-
ing in matched harmonic frequencies and simplifying design
for sensitive communication equipment.
M9999-042205
10
April 2005
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| MIC2204YMM | 功能描述:直流/直流开关调节器 2MHz Synchronous Buck Regulator (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 |
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| MIC2205_06 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:2MHz PWM Synchronous Buck Regulator with LDO Standby Mode |
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