ADP120
Parameter
Symbol
Conditions
Min
Typ
60
66
Max
Unit
dB
dB
POWER SUPPLY REJECTION RATIO
PSRR
10 kHz, VIN = 5 V, VOUT = 3.3 V
10 kHz, VIN = 5 V, VOUT = 2.5 V
10 kHz, VIN = 5 V, VOUT = 1.2 V
70
dB
1 Based on an endpoint calculation using 1 mA and 100 mA loads. See Figure 6 for typical load regulation performance for loads less than 1 mA.
2 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 2.3 V.
3 Start-up time is defined as the time between the rising edge of EN to VOUT being at 90% of its nominal value.
4 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.
RECOMMENDED SPECIFICATIONS: INPUT AND OUTPUT CAPACITORS
Table 2.
Parameter
Symbol
CMIN
Conditions
Min
Typ
Max
Unit
μF
MINIMUM INPUT AND OUTPUT CAPACITANCE1
TJ = −40°C to +125°C
TJ = −40°C to +125°C
0.70
0.001
CAPACITOR ESR
RESR
1
Ω
1 The minimum input and output capacitance should be greater than 0.70 ꢀF over the full range of operating conditions. The full range of 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,
Y5V and Z5U capacitors are not recommended for use with any LDO.
Rev. A | Page 4 of 20