ADP222/ADP223/ADP224/ADP225

Data Sheet

Rev. B | Page 4 of 24

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

OUTPUT NOISE

56

µV rms

50

µV rms

45

µV rms

27

µV rms

POWER SUPPLY REJECTION RATIO

PSRR

100 Hz

76

dB

1 kHz

76

dB

10 kHz

70

dB

100 kHz

60

dB

1 MHz

40

dB

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

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

0.70

µF

CAPACITOR ESR

0.001

1

Ω