参数资料
型号: MIC2164YMM
厂商: Micrel Inc
文件页数: 3/39页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 10-MSOP
产品培训模块: MIC2124 Synchronous Current Mode DC-DC Buck Controller
特色产品: MIC2164 Buck Regulator
标准包装: 100
系列: Hyper Speed Control™
PWM 型: 混合物
输出数: 1
频率 - 最大: 375kHz
占空比: 87%
电源电压: 3 V ~ 28 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
产品目录页面: 1092 (CN2011-ZH PDF)
其它名称: 576-3466-5
Micrel, Inc.
Pin Description (Continued)
MIC2164/-2/-3/C
Pin Number
9
10
Pin Name
LX
BST
Pin Function
Switch Node and Current Sense input: High current output driver return. The LX pin connects directly
to the switch node. Due to the high speed switching on this pin, the LX pin should be routed away from
sensitive nodes. LX 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 LX using a Kelvin connection.
Boost (output): Bootstrapped voltage to the high-side N-channel MOSFET driver. A Schottky diode is
connected between the IN pin and the BST pin. A boost capacitor of 0.1 μ F is connected between the
BST pin and the LX pin. Adding a small resistor in series with the boost capacitor can slow down the
turn-on time of high-side N-Channel MOSFETs.
September 2010
3
M9999-091310-D
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