参数资料
| 型号： | MIC2204BMM TR |
| 厂商： | Micrel Inc |
| 文件页数： | 7/11页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.6A 10MSOP |
| 标准包装： | 2,500 |
| 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-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-MSOP |
| 其它名称： | MIC2204BMMTR |
MIC2204
Functional Description
VIN
VIN provides power to the output and to the internal bias
supply. The supply voltage range is from 2.3V to 5.5V. A
minimum 1 μ F ceramic is recommended for bypassing the
input supply.
Enable
The enable pin provides a logic level control of the output. In
the off state, supply current of the device is greatly reduced
(typically 6.5 μ A). Also, in the off state, the output drive is
placed in a “tri-stated” condition, where both the high-side
P-Channel MOSFET and the low-side N-Channel are in an off
or non-conducting state. Do not drive the enable pin above
the supply voltage.
SYNC_IN
SYNC_IN enables the ability to change the fundamental
switching frequency. The SYNC_IN frequency has a mini-
mum frequency of 1.8MHz and a maximum sync frequency
Micrel, Inc.
SYNC_OUT
Since SYNC_OUT is an open collector output that provides
a signal equal to the internal oscillator frequency, multiple
MIC2204s to be connected together in a master-slave con-
figuration for frequency matching of the converters. A typical
10k ? is recommended for a pull-up resistor.
BIAS
The bias supply is an internal 2.3V linear regulator that
supplies the internal biasing voltage to the MIC2204. A 10nF
ceramic capacitor is required on this pin for bypassing. Do not
use the BIAS pin as a supply. The BIAS pin was designed to
supply internal power and not external circuitry.
Feedback
The feedback pin provides the control path to control the
output. A resistor divider connecting the feedback to the
output is used to adjust the desired output voltage. Refer to
the “Feedback” material in the “ Applications Information”
section for more detail.
of 2.5MHz.
Careful attention should be paid to not driving the SYNC_IN
pin greater than the supply voltage. While this will not damage
the device, it will cause improper operation.
MIC2204
“Master”
10k ?
VIN
SW
BIAS
SYNC_IN
SYNC_OUT
FB
MIC2204
“Slave”
VIN
SW
BIAS
SYNC_IN
SYNC_OUT
FB
Figure 1. SYNC_OUT
April 2005
7
M9999-042205
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| MIC2204YML | 功能描述:直流/直流开关调节器 2MHz Synchronous Buck Regulator - Pb Free Finish 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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| MIC2204YMM TR | 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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