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参数资料
| 型号： | ADP121CB-3.3-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 12/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL ADP121-1 3.3V OUTPUT |
| 设计资源： | Low power, Long Range, ISM Wireless Measuring Node (CN0164) |
| 标准包装： | 1 |
| 每 IC 通道数： | 1 - 单 |
| 输出电压： | 3.3V |
| 电流 - 输出： | 150mA |
| 输入电压： | 2.3 ~ 5.5 V |
| 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： | ADP121 |
ADP121
APPLICATIONS INFORMATION
CAPACITOR SELECTION
Output Capacitor
The ADP121 is designed for operation with small, space-saving
ceramic capacitors, but functions with most commonly used
capacitors as long as care is taken with the effective series resistance
(ESR) value. The ESR of the output capacitor affects stability of the
LDO control loop. A minimum of 0.70 μF capacitance with an
ESR of 1 ? or less is recommended to ensure stability of the
ADP121. The transient response to changes in the load current is
also affected by output capacitance. Using a larger value of output
capacitance improves the transient response of the ADP121 to
large changes in the load current. Figure 28 and Figure 29 show
the transient responses for output capacitance values of 1 μF and
4.7 μF, respectively.
I LOAD
1mA TO 150mA LOAD STEP,
2.5A/μs
CH1 MEAN
115.7mA
Data Sheet
Input Bypass Capacitor
Connecting a 1 μF capacitor from VIN to GND reduces the
circuit sensitivity to the PCB layout, especially when long input
traces or high source impedance is encountered. If output
capacitance greater than 1 μF is required, the input capacitor
should be increased to match it.
Input and Output Capacitor Properties
Any good quality ceramic capacitor can be used with the
ADP121, as long as it meets the minimum capacitance and
maximum ESR requirements. Ceramic capacitors are manufac-
tured with a variety of dielectrics, each with a different behavior
over temperature and applied voltage. Capacitors must have an
adequate dielectric 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
recomm ended. Y5V and Z5U dielectrics are not
recommended, due to their poor temperature and dc bias
characteristics.
of an 0402 1 μF, 10 V, X5R capacitor. The voltage stability of a
capacitor is strongly influenced by the capacitor size and voltage
rating. In general, a capacitor in a larger package or higher voltage
rating exhibits better stability. The temperature variation of the
X5R dielectric is about ±15% over the ?40°C to +85°C tempera-
V OUT = 1.8V,
C IN = C OUT = 1μF
V OUT
(400ns/DIV)
ture range and is not a function of package or voltage rating.
1.2
Figure 28. Output Transient Response, C OUT = 1 μF
1.0
0.8
I LOAD
1mA TO 150mA LOAD STEP,
0.6
2.5A/μs
0.4
0.2
0
0
2
4
6
8
10
V OUT
VOLTAGE (V)
Figure 30. Capacitance vs. Voltage Bias Characteristic
V OUT = 1.8V,
C IN = C OUT = 4.7μF
(400ns/DIV)
Figure 29. Output Transient Response, C OUT = 4.7 μF
Rev. G | Page 12 of 20
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| ADP121UJZ-REDYKIT | 功能描述:KIT REDI TOOL 2.8/3.3 ADP121 RoHS:是 类别:编程器，开发系统 >> 评估板 - 线性稳压器 (LDO) 系列:Redykit™ 产品变化通告:1Q2012 Discontinuation 30/Mar/2012 设计资源:NCP590MNDPTAGEVB Gerber Files 标准包装:1 系列:- 每 IC 通道数:2 - 双 输出电压:1.8V，2.8V 电流 - 输出:300mA 输入电压:2.1 ~ 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:NCP590MNDP 其它名称:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
| ADP122 | 制造商:AD 制造商全称:Analog Devices 功能描述:5.5 V Input, 300 mA, Low Quiescent Current, CMOS Linear Regulator |
| ADP1221 | 功能描述:板上安装压力/力传感器 34.3kPa 0.35kgf/cm Pressure Sensor RoHS:否 制造商:Honeywell 工作压力:0 bar to 4 bar 压力类型:Gage 准确性:+ / - 0.25 % 输出类型:Digital 安装风格:Through Hole 工作电源电压:5 V 封装 / 箱体:SIP 端口类型:Dual Radial Barbed, Same sides |
| ADP122-3.3-EVALZ | 功能描述:BOARD EVALUATION 3.3V ADP122 RoHS:是 类别:编程器，开发系统 >> 评估板 - 线性稳压器 (LDO) 系列:- 产品变化通告:1Q2012 Discontinuation 30/Mar/2012 设计资源:NCP590MNDPTAGEVB Gerber Files 标准包装:1 系列:- 每 IC 通道数:2 - 双 输出电压:1.8V，2.8V 电流 - 输出:300mA 输入电压:2.1 ~ 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:NCP590MNDP 其它名称:NCP590MNDPTAGEVB-NDNCP590MNDPTAGEVBOS |
| 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 |
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