参数资料
| 型号： | SC186ULTRT |
| 厂商： | Semtech |
| 文件页数： | 5/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 4A 16MLPQ |
| 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： | 0.8 V ~ 3.3 V |
| 输入电压： | 2.9 V ~ 5.5 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 4A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-UFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 16-MLPQ-UT（3x3） |
| 其它名称： | SC186ULDKR |
SC186
Pin Descriptions
Pin #
1, 16
2
3
4, 5, 6, 7
8
9
10
11,12,13
14,15
T
Pin Name
PVIN
AGND
AVIN
CTLx
PGOOD
SS
VOUT
PGND
LX
Thermal Pad
Pin Function
Input supply voltage for the converter power stage
Ground connection for the internal circuitry — AGND needs to be connected to PGND directly.
Power supply for the internal circuitry — AVIN is required to be connected to PVIN through an R-C filter of 1Ω
and 100nF.
Control bit — see Table 1 for decoding. These pins have 500kΩ internal pull-down resistors which are switched
in circuit whenever CTLx is low or when the part is in under-voltage lockout.
Power good indicator — when the output voltage reaches the PGOOD threshold, this pin will be open-drain
(after the PGOOD delay), otherwise, it is pulled low internally.
Soft Start — Connect a soft-start capacitor to program the soft start time. There is a 5μA charging current
flowing out of the pin.
Output voltage sense pin
Ground connection for converter power stage
Switching node — connect an inductor between this pin and the output capacitor.
Thermal pad for heat sinking purposes — recommend to connect to PGND. It is not connected internally.
5
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