参数资料
型号: MIC2176-2YMM
厂商: Micrel Inc
文件页数: 3/31页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 10-MSOP
标准包装: 100
系列: Hyper Speed Control™
PWM 型: 混合物
输出数: 1
频率 - 最大: 250kHz
占空比: 93%
电源电压: 4.5 V ~ 75 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 管件
其它名称: 576-3757-5
Micrel, Inc.
Pin Description (Continued)
MIC2176
Pin
Number
9
10
Pin Name
SW
BST
Pin Function
Switch Node and Current-Sense input (Input): High current output driver return. The SW pin connects
directly to the switch node. Due to the high-speed switching on this pin, the SW pin should be routed
away from sensitive nodes. The SW pin also senses the current by monitoring the voltage across the
low-side MOSFET during OFF time. In order to sense the current accurately, connect the low-side
MOSFET drain to the SW pin using a Kelvin connection.
Boost (Output): Bootstrapped voltage to the high-side N-channel internal MOSFET driver. A Schottky
diode is connected between the VDD pin and the BST pin. A boost capacitor of 0.1 μ F is connected
between the BST pin and the SW pin. Adding a small resistor in series with the BST pin can slow
down the turn-on time of high-side N-Channel MOSFETs.
November 2010
3
M9999-111710-A
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