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| 型号： | ADP1716-2.5-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADP1716-2.5 |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 2.5V |
| 电流 - 输出： | 500mA |
| 输入电压： | 2.5 ~ 5.5V |
| 稳压器类型： | 正，固定式 |
| 工作温度： | -40°C ~ 125°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP1716 |
| 相关产品： | ADP1716ARMZ-1.3-R7CT-ND - IC REG LDO 1.3V .5A 8MSOP ADP1716ARMZ-1.2-R7CT-ND - IC REG LDO 1.2V .5A 8MSOP ADP1716ARMZ-1.15R7CT-ND - IC REG LDO 1.15V .5A 8MSOP ADP1716ARMZ-1.1-R7CT-ND - IC REG LDO 1.1V .5A 8MSOP ADP1716ARMZ-1.0-R7CT-ND - IC REG LDO 1V .5A 8MSOP ADP1716ARMZ-0.95R7CT-ND - IC REG LDO 0.95V .5A 8MSOP ADP1716ARMZ-0.9-R7CT-ND - IC REG LDO 0.9V .5A 8MSOP ADP1716ARMZ-0.85R7CT-ND - IC REG LDO 0.85V .5A 8MSOP ADP1716ARMZ-0.8-R7CT-ND - IC REG LDO 0.8V .5A 8MSOP ADP1716ARMZ-0.75R7CT-ND - IC REG LDO 0.75V .5A 8MSOP 更多... |
ADP1715/ADP1716
APPLICATION INFORMATION
CAPACITOR SELECTION
Output Capacitor
The ADP1715/ADP1716 are designed for operation with small,
space-saving ceramic capacitors, but they will function with most
commonly used capacitors as long as care is taken about the
effective series resistance (ESR) value. The ESR of the output
capacitor affects stability of the LDO control loop. A minimum of
2.2 μF capacitance with an ESR of 500 mΩ or less is recommended
to ensure stability of the ADP1715/ADP1716. Transient response
to changes in load current is also affected by output capacitance.
Using a larger value of output capacitance improves the transient
response of the ADP1715/ADP1716 to large changes in load
current. Figure 32 and Figure 33 show the transient responses for
output capacitance values of 2.2 μF and 22 μF.
SWITCH SIGNAL TO CHANGE
OUTPUT LOAD FROM 25mA TO 475mA
1
2
Input and Output Capacitor Properties
Any good quality ceramic capacitors can be used with the
ADP1715/ADP1716, as long as they meet the minimum
capacitance and maximum ESR requirements. Ceramic
capacitors are manufactured with a variety of dielectrics, each
with different behavior over temperature and applied voltage.
Capacitors must have a dielectric adequate to ensure the
minimum capacitance over the necessary temperature range
and dc bias conditions. X5R or X7R dielectrics with a voltage
rating of 6.3 V or 10 V are recommended. Y5V and Z5U
dielectrics are not recommended, due to their poor temperature
and dc bias characteristics.
CURRENT LIMIT AND THERMAL OVERLOAD
PROTECTION
The ADP1715/ADP1716 are protected against damage due to
excessive power dissipation by current and thermal overload
protection circuits. The ADP1715/ADP1716 are designed to
current limit when the output load reaches 750 mA (typical).
When the output load exceeds 750 mA, the output voltage is
reduced to maintain a constant current limit.
Thermal overload protection is included, which limits the
V OUT
V IN = 5V
junction temperature to a maximum of 150°C (typical). Under
extreme conditions (that is, high ambient temperature and
1
2
V OUT = 3.3V
C IN = 2.2μF
C OUT = 2.2μF
TIME (2μs/DIV)
Figure 32. Output Transient Response
SWITCH SIGNAL TO CHANGE
OUTPUT LOAD FROM 25mA TO 475mA
power dissipation) when the junction temperature starts to rise
above 150°C, the output is turned off, reducing the output
current to zero. When the junction temperature drops below
135°C, the output is turned on again and output current is
restored to its nominal value.
Consider the case where a hard short from OUT to ground
occurs. At first the ADP1715/ADP1716 will current limit, so
that only 750 mA is conducted into the short. If self heating of
the junction is great enough to cause its temperature to rise
above 150°C, thermal shutdown will activate, turning off the
output and reducing the output current to zero. As the
junction temperature cools and drops below 135°C, the output
V OUT
V IN = 5V
turns on and conducts 750 mA into the short, again causing
the junction temperature to rise above 150°C. This thermal
V OUT = 3.3V
C IN = 22μF
C OUT = 22μF
TIME (2μs/DIV)
Figure 33. Output Transient Response
Input Bypass Capacitor
Connecting a 2.2 μF capacitor from the IN pin to GND reduces
the circuit sensitivity to printed circuit board (PCB) layout,
especially when long input traces, or high source impedance, is
encountered. If greater than 2.2 μF of output capacitance is
required, the input capacitor should be increased to match it.
oscillation between 135°C and 150°C causes a current
oscillation between 750 mA and 0 mA that continues as long
as the short remains at the output.
Current and thermal limit protections are intended to protect
the device against accidental overload conditions. For reliable
operation, device power dissipation should be externally limited
so junction temperatures do not exceed 125°C.
THERMAL CONSIDERATIONS
To guarantee reliable operation, the junction temperature of the
ADP1715/ADP1716 should not exceed 125°C. To ensure the
junction temperature stays below this maximum value, the user
Rev. 0 | Page 12 of 20
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| ADP1716ARMZ-0.75R7 | 功能描述:IC REG LDO 0.75V .5A 8MSOP 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:3.3V 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:剪切带 (CT) 产品目录页面:1358 (CN2011-ZH PDF) 其它名称:SC560HULCT |
| ADP1716ARMZ-0.85R7 | 功能描述:IC REG LDO 0.85V .5A 8MSOP 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:3.3V 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:剪切带 (CT) 产品目录页面:1358 (CN2011-ZH PDF) 其它名称:SC560HULCT |
| ADP1716ARMZ-0.8-R7 | 功能描述:IC REG LDO 0.8V .5A 8MSOP 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 |
| ADP1716ARMZ-0.95R7 | 功能描述:IC REG LDO 0.95V .5A 8MSOP 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:3.3V 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:剪切带 (CT) 产品目录页面:1358 (CN2011-ZH PDF) 其它名称:SC560HULCT |
| ADP1716ARMZ-0.9-R7 | 功能描述:IC REG LDO 0.9V .5A 8MSOP 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:3.3V 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:剪切带 (CT) 产品目录页面:1358 (CN2011-ZH PDF) 其它名称:SC560HULCT |
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