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参数资料
| 型号： | ADP220ACBZ-2827R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 2.8V/2.7V .2A 6WLCSP |
| 产品变化通告： | 8mm Carrier Tape Changes 28/Feb/2012 |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 2.8V，2.7V |
| 输入电压： | 2.5 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.15V @ 200mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 200mA（最小值） |
| 电流 - 限制（最小）： | 240mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-WFBGA，WLCSP |
| 供应商设备封装： | 6-WLCSP（1.45x0.95） |
| 包装： | 标准包装 |
| 其它名称： | ADP220ACBZ-2827R7DKR |
Data Sheet
accounting for capacitor variation over temperature, compo-
nent tolerance, and voltage.
ADP220/ADP221
As shown in Figure 32, the ENx pins have built-in hysteresis.
This prevents on/off oscillations that can occur due to noise on
the ENx pins as it passes through the threshold points.
C EFF = C BIAS × (1 ? TEMPCO ) × (1 ? TOL )
(1)
The active/inactive thresholds of the ENx pins are derived from
where:
C BIAS is the effective capacitance at the operating voltage.
TEMPCO is the worst-case capacitor temperature coefficient.
TOL is the worst-case component tolerance.
In this example, TEMPCO over ?40°C to +85°C is assumed to
be 15% for an X5R dielectric. TOL is assumed to be 10%, and
the VIN voltage. Therefore, these thresholds vary with changing
input voltage. Figure 33 shows typical ENx active/inactive thresh-
olds when the input voltage varies from 2.5 V to 5.5 V.
1.00
0.95
0.90
Substituting these values into Equation 1 yields
C EFF = 0.94 μF × (1 ? 0.15) × (1 ? 0.1) = 0.719 μF
Therefore, the capacitor chosen in this example meets the
minimum capacitance requirement of the LDO over
temperature and tolerance at the chosen output voltage.
To guarantee the performance of the ADP220/ADP221, it is
0.85
0.80
0.75
0.70
0.65
EN ACTIVE
EN INACTIVE
imperative that the effects of dc bias, temperature, and toler-
ances on the behavior of the capacitors be evaluated for each
0.60
2.5
3.0
3.5
4.0
4.5
5.0
5.5
application.
UNDERVOLTAGE LOCKOUT
The ADP220/ADP221 have an internal undervoltage lockout
circuit that disables all inputs and the output when the input
voltage is less than approximately 2.2 V. This ensures that the
inputs of the ADP220/ADP221 and the output behave in a
predictable manner during power-up.
ENABLE FEATURE
The ADP220/ADP221 use the ENx pins to enable and disable
shows a rising voltage on ENx crossing the active threshold,
then V OUTx turns on. When a falling voltage on ENx crosses the
inactive threshold, V OUTx turns off.
INPUT VOLTAGE (V)
Figure 33. Typical ENx Pins Thresholds vs. Input Voltage
The ADP220/ADP221 utilize an internal soft start to limit the
inrush current when the output is enabled. The start-up time
for the 2.8 V option is approximately 220 μs from the time the
ENx active threshold is crossed to when the output reaches 90%
of its final value. The start-up time is somewhat dependent on
the output voltage setting and increases slightly as the output
voltage increases.
T
1
T
V OUTx
2
ENx
3
CH1 5.00V BW
CH2 2.00V BW
M40.0μs
A CH1
2.10V
CH3 2.00V BW
T 9.80%
Figure 34. Typical Start-Up Time
1
CH1 500mV BW CH2 500mV BW
M10.0ms
A CH2
1.76V
T 27.40%
Figure 32. Typical ENx Pin Operation
Rev. H | Page 13 of 20
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| ADP220ACBZ-2828R7 | 功能描述:IC REG LDO 2.8V .2A 6WLCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 标准包装:45 系列:- 稳压器拓扑结构:正，固定式 输出电压:5V 输入电压:6 V ~ 30 V 电压 - 压降（标准）:0.47V @ 250mA 稳压器数量:1 电流 - 输出:250mA 电流 - 限制（最小）:- 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:TO-220-3 供应商设备封装:TO-220-3 包装:管件 产品目录页面:1289 (CN2011-ZH PDF) 其它名称:*LP2954AIT*LP2954AIT/NOPBLP2954AIT |
| ADP220ACBZ-3033R7 | 功能描述:Linear Voltage Regulator IC Positive Fixed 2 Output 3V, 3.3V 200mA 6-WLCSP (1.45x0.95) 制造商:analog devices inc. 系列:- 包装:带卷（TR） 零件状态:上次购买时间 稳压器拓扑:正，固定式 电压 - 输出:3V，3.3V 电流 - 输出:200mA 电压 - 跌落（典型值）:-，0.15V @ 200mA 稳压器数:2 电压 - 输入:2.5 V ~ 5.5 V 电流 - 限制（最小值）:240mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-WFBGA，WLCSP 供应商器件封装:6-WLCSP（1.45x0.95） 标准包装:1 |
| ADP221ACBZ-1818-R7 | 功能描述:线性稳压器 - 标准 High PSRR Low Noise DUAL Ldo RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| ADP221ACBZ2828-R7 | 功能描述:线性稳压器 - 标准 High PSRR Low Noise DUAL Ldo RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| ADP221ACDZ-1818-R7 | 功能描述:线性稳压器 - 标准 RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
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