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参数资料
| 型号： | ADP122-3.3-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION 3.3V ADP122 |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 300mA |
| 输入电压： | 2.3 ~ 5.5 V |
| 稳压器类型： | 正，固定式 |
| 工作温度： | -40°C ~ 85°C |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP122 |
Data Sheet
Therefore, the capacitor chosen in this example meets the
minimum capacitance requirement of the LDO over tem-
perature and tolerance at the chosen output voltage.
1.1
1.0
ADP122/ADP123
To guarantee the performance of the ADP122/ADP123, it is
imperative that the effects of dc bias, temperature, and tolerances
0.9
RISING
on the behavior of the capacitors are evaluated for each application.
UNDERVOLTAGE LOCKOUT
The ADP122/ADP123 have an internal undervoltage lockout
circuit that disables all inputs and the output when the input
voltage is less than approximately 2 V. This ensures that the
0.8
0.7
0.6
FALLING
ADP122/ADP123 inputs and the output behave in a predictable
manner during power-up.
0.5
2.2
2.7
3.2
3.7
4.2
4.7
5.2
ENABLE FEATURE
The ADP122/ADP123 uses the EN pin to enable and disable the
VOUT pin under normal operating conditions. As shown in
VOUT turns on. Conversely, when a falling voltage on EN crosses
the inactive threshold, VOUT turns off.
3.5
3.0
2.5
2.0
V IN (V)
Figure 36. Typical EN Pin Thresholds vs. Input Voltage
The ADP122/ADP123 utilize an internal soft start to limit the
in-rush current when the output is enabled. The start-up time
for the 2.8 V option is approximately 350 μs from the time the
EN active threshold is crossed to when the output reaches 90%
of its final value. As shown in Figure 37, the start-up time is
dependent on the output voltage setting and increases slightly
as the output voltage increases.
V IN = 5V
V OUT = 4.2V
V OUT = 3.3V
1.5
V OUT = 2.8V
1.0
0.5
0
1
2
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
V EN
Figure 35. Typical EN Pin Operation
As shown in Figure 35, the EN pin has built-in hysteresis. This
CH1 1.00V
CH2 1.00V
M200μs
T 600.000μs
A CH1
3.08V
prevents on/off oscillations that may occur due to noise on the
EN pin as it passes through the threshold points.
The active and inactive thresholds of the EN pin are derived from
the VIN voltage. Therefore, these thresholds vary as the input
voltage changes. Figure 36 shows typical EN active and inactive
thresholds when the VIN voltage varies from 2.3 V to 5.5 V.
Rev. E | Page 13 of 24
Figure 37. Typical Start-Up Time
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相关代理商/技术参数 |
参数描述 |
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| ADP122ACPZ-1.8-R7 | 功能描述:IC REG LDO 1.8V .3A 6LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
| ADP122ACPZ-2.0-R7 | 功能描述:IC REG LDO 2V .3A 6LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
| ADP122ACPZ-2.5-R7 | 功能描述:IC REG LDO 2.5V .3A 6LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
| ADP122ACPZ-2.6-R7 | 功能描述:IC REG LDO 2.6V .3A 6LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
| ADP122ACPZ-2.8-R7 | 功能描述:IC REG LDO 2.8V .3A 6LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 其它有关文件:LD39015JXX12 View All Specifications 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:1.2V 输入电压:1.5 V ~ 5.5 V 电压 - 压降（标准）:- 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-WFBGA，FCBGA 供应商设备封装:4-覆晶（1.07x1.07） 包装:Digi-Reel® 其它名称:497-11958-6 |
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