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| 型号： | SC189ASKTRT |
| 厂商： | Semtech |
| 文件页数： | 7/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1V 1.5A 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： | 1V |
| 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： | 是 |
| 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 |
| 其它名称： | SC189ASKDKR |
SC189
Typical Characteristics ( continued )
Circuit Conditions: C IN = 10uF/6.3V; C OUT = 10uF/6.3V for L=2.2uH; C OUT = 22uF/6.3V for L=1uH.
Unless otherwise noted, L= 2.2uH (TOKO: 1071AS-2R2M) and SC189 in MLPD-UT6 package.
R DS(ON) Variation vs. Temperature
30%
RDSON (P & vs. Input over Line
R DS(ON) Variation N) Variation Voltage
20%
RDSON (P & N) Variation Over Temperature
25%
15%
V IN = 5.0V
I LX = ±100mA
20%
15%
P-Channel
10%
5%
10%
5%
0%
0%
-5%
-10%
N-Channel
-5%
I LX = ±100mA
T A = 25°C
N-Channel
-15%
P-Channel
-10%
-20%
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
Switching Frequency vs. Input Voltage
5%
4%
Input Voltage (V)
Switching Frequency Variation over Line
1.0%
0.8%
Ambient Temperature (°C)
Switching Variation
Switching Frequency vs. Temperature
3%
2%
1%
0%
-1%
-2%
V OUT = 1.5V
V OUT = 3.3V
0.6%
0.4%
0.2%
0.0%
-0.2%
-0.4%
-3%
-4%
-5%
I OUT = 0A
T A = 25°C
-0.6%
-0.8%
-1.0%
V IN = 5.0V
I OUT = 0A
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
Line Regulation Line
Line Regulation vs. Temperature
1.0%
0.8%
0.6%
Input Voltage (V)
Line Regulation ove
1.0%
0.8%
0.6%
Ambient Temperature (°C)
Line Regulation over Temperature
0.4%
0.2%
0.0%
-0.2%
-0.4%
V OUT = 1.5V
0.4%
0.2%
0.0%
-0.2%
-0.4%
-0.6%
-0.8%
I OUT = 0A
T A = 25°C
V OUT = 3.3V
-0.6%
-0.8%
V OUT = 1.5V
I OUT = 0A
-1.0%
-1.0%
2.5
3.0
3.5
4.0
4.5
5.0
5.5
-40
-15
10
35
60
85
Input Voltage (V)
Ambient Temperature (°C)
? 2009 Semtech Corp.
7
www.semtech.com
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