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参数资料
| 型号： | ADP225CP-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADP225 |
| 标准包装： | 1 |
| 系列： | * |
ADP222/ADP223/ADP224/ADP225
Data Sheet
Parameter
OUTPUT NOISE
Symbol
OUT NOISE
Test Conditions/Comments
10 Hz to 100 kHz, V IN = 5 V, V OUT = 3.3 V
Min
Typ
56
Max
Unit
μV rms
10 Hz to 100 kHz, V IN = 5 V, V OUT = 2.8 V
10 Hz to 100 kHz, V IN = 3.6 V, V OUT = 2.5 V
10 Hz to 100 kHz, V IN = 3.6 V, V OUT = 1.2 V
50
45
27
μV rms
μV rms
μV rms
POWER SUPPLY REJECTION RATIO
PSRR
V IN = 2.5 V, V OUT = 0.8 V, I OUT = 100 mA
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
V IN = 3.8 V, V OUT = 2.8 V, I OUT = 100 mA
100 Hz
1 kHz
10 kHz
100 kHz
1 MHz
76
76
70
60
40
68
68
68
60
40
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
1
2
3
4
5
Accuracy when VOUTx is connected directly to ADJx or SENSEx. When the VOUTx voltage is set by external feedback resistors, the absolute accuracy in adjust mode
depends on the tolerances of resistors used.
Based on an end-point calculation using 1 mA and 300 mA loads.
Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage. This applies only for output
voltages above 2.5 V.
Start-up time is defined as the time between the rising edge of EN to V OUT being at 90% of its nominal value.
Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V or 2.7 V.
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
The minimum input and output capacitance should be greater than 0.70 μF over the full range of the operating conditions. The full range of the
operating conditions in the application must be considered during device selection to ensure that the minimum capacitance specification
is met. X7R and X5R type capacitors are recommended for use with the LDOs, but Y5V and Z5U capacitors are not recommended for use
with the LDOs.
Table 2.
Parameter
MINIMUM INPUT AND OUTPUT CAPACITANCE
CAPACITOR ESR
Symbol
C MIN
R ESR
Conditions
T A = ?40°C to +125°C
T A = ?40°C to +125°C
Min
0.70
0.001
Typ
Max
1
Unit
μF
Ω
Rev. D | Page 4 of 24
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