参数资料
型号: SC560CULTRT
厂商: Semtech
文件页数: 12/15页
文件大小: 0K
描述: IC REG LDO ADJ .3A 8-MLPQ
标准包装: 1
稳压器拓扑结构: 正,可调式
输出电压: 1.2 V ~ 5 V
输入电压: 2.5 V ~ 5.5 V
电压 - 压降(标准): 0.1V @ 200mA
稳压器数量: 2
电流 - 输出: 300mA
电流 - 限制(最小): 350mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-UFQFN
供应商设备封装: 8-MLPQ-UT(1.5x1.5)
包装: 标准包装
产品目录页面: 1358 (CN2011-ZH PDF)
其它名称: SC560CULDKR
SC560
Applications Information (continued)
Thermal Considerations
Although each of the two LDOs in the SC560 can provide
300mA of output current, the maximum power dissipation
in the device is restricted by the miniature package size.
The graphs in Figure 3 and Figure 4 can be used as a
guideline to determine whether the input voltage, output
voltages, output currents, and ambient temperature of the
system result in power dissipation within the operating
limits are met or if further thermal relief is required.
0.7
0.6
The following procedure can be followed to determine if
the thermal design of the system is adequate. The junction
temperature of the SC560 can be determined in known
operating conditions using the following equation:
T J = T A +(P D x θ JA )
where
T J = Junction Temperature (°C)
T A = Ambient Temperature (°C)
P D = Power Dissipation (W)
θ JA = Thermal Resistance Junction to Ambient (°C/W)
0.5
Example
0.4
0.3
Vo=1.5V
Vo=3.3V
An SC560D is used to provide outputs of 2.8V, 150mA from
LDOA and 1.8V, 200mA from LDOB. The input voltage is
4.2V, and the ambient temperature of the system is 40°C.
0.2
T A =+25 ° C, P D(MAX) = 0.8W
0.1
0
______
- - - - T A =+85 ° C, P D(MAX) = 0.41W
P D = 0.15(4.2 – 2.8) + 0.2(4.2 – 1.8)
= 0.69W
2.5
3
3.5
4
4.5
5
5.5
6
1.6
1.4
1.2
Input Voltage (V)
Figure 3 — Safe Operating Limit
and
T J = 40 + (0.69 x 157) = 148.3°C
Figures 3 and 4 show that the junction temperature
would be within the maximum specification of 150°C
for this power dissipation. This means that operation of
1
0.8
0.6
T J (Max)=150°C
the SC560 under these conditions is within the specified
limits and the device would not require further thermal
relief measures.
T J (Max)=125°C
0.4
0.2
0
-40
-20
0
20 40
60
80
100
Ambient Temperature ( o C)
Figure 4 — Maximum P D vs. T A
12
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SC560DULTRT 功能描述:IC REG LDO 2.8V/1.8V .3A 8-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正,固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降(标准):- 稳压器数量:1 电流 - 输出:300mA(最小值) 电流 - 限制(最小):360mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型,TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR)
SC560EULTRT 功能描述:IC REG LDO 2.85V .3A 8-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:1 系列:- 稳压器拓扑结构:正,固定式 输出电压:8V 输入电压:10.5 V ~ 23 V 电压 - 压降(标准):1.7V @ 40mA 稳压器数量:1 电流 - 输出:100mA(最小值) 电流 - 限制(最小):- 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC(0.154",3.90mm 宽) 供应商设备封装:8-SOIC 包装:剪切带 (CT) 产品目录页面:1075 (CN2011-ZH PDF) 其它名称:296-24390-1
SC560FULTRT 功能描述:IC REG LDO 2.5V/1.8V .3A 8-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正,固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降(标准):- 稳压器数量:1 电流 - 输出:300mA(最小值) 电流 - 限制(最小):360mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型,TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR)
SC560GULTRT 功能描述:IC REG LDO 2.8V/1.5V .3A 8-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:3,000 系列:- 稳压器拓扑结构:正,固定式 输出电压:2.5V 输入电压:2.5 V ~ 5.5 V 电压 - 压降(标准):- 稳压器数量:1 电流 - 输出:300mA(最小值) 电流 - 限制(最小):360mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-5 细型,TSOT-23-5 供应商设备封装:TSOT-23-5 包装:带卷 (TR)
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