Datasheet
ADP222/ADP223/ADP224/ADP225 Data Sheet
Rev. D | Page 4 of 24
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
OUTPUT NOISE OUT
NOISE
10 Hz to 100 kHz, V
IN
= 5 V, V
OUT
= 3.3 V 56 µV rms
10 Hz to 100 kHz, V
IN
= 5 V, V
OUT
= 2.8 V 50 µV rms
10 Hz to 100 kHz, V
IN
= 3.6 V, V
OUT
= 2.5 V 45 µV rms
10 Hz to 100 kHz, V
IN
= 3.6 V, V
OUT
= 1.2 V 27 µV rms
POWER SUPPLY REJECTION RATIO PSRR V
IN
= 2.5 V, V
OUT
= 0.8 V, I
OUT
= 100 mA
100 Hz 76 dB
1 kHz 76 dB
10 kHz 70 dB
100 kHz 60 dB
1 MHz 40 dB
V
IN
= 3.8 V, V
OUT
= 2.8 V, I
OUT
= 100 mA
100 Hz 68 dB
1 kHz 68 dB
10 kHz
68
dB
100 kHz 60 dB
1 MHz 40 dB
1
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.
2
Based on an end-point calculation using 1 mA and 300 mA loads.
3
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.
4
Start-up time is defined as the time between the rising edge of EN to V
OUT
being at 90% of its nominal value.
5
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 Symbol Conditions Min Typ Max Unit
MINIMUM INPUT AND OUTPUT CAPACITANCE C
MIN
T
A
= −40°C to +125°C 0.70 µF
CAPACITOR ESR R
ESR
T
A
= −40°C to +125°C 0.001 1 Ω