参数资料
型号: SC189LSKTRT
厂商: Semtech
文件页数: 14/24页
文件大小: 0K
描述: IC REG BUCK SYNC 1.8V SOT23-5
标准包装: 1
类型: 降压(降压)
输出类型: 固定
输出数: 1
输出电压: 1.8V
输入电压: 2.9 V ~ 5.5 V
PWM 型: 电压模式
频率 - 开关: 2.5MHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
包装: 标准包装
供应商设备封装: SOT-23-5
产品目录页面: 1357 (CN2011-ZH PDF)
其它名称: SC189LSKDKR
SC189
Pin Descriptions
Pin #
(MPLD-UT6)
1
Pin #
(SOT23-5)
Not Available
Pin Name
NC
Pin Function
No connection.
Enable pin. When connected to logic high or tied to VIN pin, the SC189 is on. When con-
nected to logic low, the device enters shutdown and consumes less than 1μA of current.
2
3
EN
The enable pin has a 1 MΩ internal pulldown resistor. This resistor is switched in circuit
whenever the EN pin is below the enable input high threshold, or when the part is in un-
dervoltage lockout.
3
4
5
6
T
1
5
2
4
Not Available
VIN
LX
GND
VOUT
Thermal Pad
Input power supplies. Powers the internal circuitry and is connected to the source of high-
side P channel MOSFET.
Switching node - connect an inductor between this pin and the output capacitor.
Ground connection.
Output voltage sense pin.
Thermal pad for heatsinking purposes. This pad is not connected internally. Connect it to
GND plane.
? 2009 Semtech Corp.
14
www.semtech.com
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