Datasheet
ADP5022
Rev. C | Page 5 of 28
LDO SPECIFICATIONS
VDDA = VIN1
= VIN2 = 3.6 V, VIN3 = (VOUT3 + 0.5 V) or 2.3 V, whichever is greater, VIN3 ≤ VIN1, I
OUT3
= 10 mA; C
IN3
= C
OUT3
=
1 µF, T
J
= −40°C to +125°C, unless otherwise noted.
1
Table 3.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
OPERATING SUPPLY CURRENT
2
I
VIN3-GND
I
OUT3
= 0 µA 11 21 µA
I
OUT3
= 10 mA 16 29 µA
I
OUT3
= 150 mA 31 43 µA
OUTPUT VOLTAGE ACCURACY V
OUT3
100 µA < I
OUT3
< 150 mA,
VIN3 = (VOUT3 + 0.5 V) to 5.5 V
−2 +2 %
REGULATION
Line Regulation VOUT3/V
IN3
VIN3 = (VOUT3 + 0.5 V) to 5.5 V, I
OUT
= 1 mA −0.03 +0.03 %/ V
Load Regulation
3
VOUT3/I
OUT3
I
OUT3
= 1 mA to 150 mA 0.002 0.0075 %/mA
DROPOUT VOLTAGE
4
V
DROPOUT
VOUT3 = 3.0 V, I
OUT3
= 10 mA 7 mV
VOUT3 = 3.0 V, I
OUT3
= 150 mA 110 150 mV
START-UP TIME
5
From Shutdown State T
STARTUP3-SD
200 µs
CURRENT-LIMIT THRESHOLD
6
I
LIMIT3
160 240 350 mA
OUTPUT NOISE OUT
NOISE
10 Hz to 100 kHz, VIN3 = 5 V, VOUT3 = 3.3 V 65 µV rms
10 Hz to 100 kHz, VIN3= 5 V, VOUT3 = 2.4 V 52 µV rms
10 Hz to 100 kHz, VIN3 = 5 V, VOUT3 = 1.2 V 40 µV rms
POWER SUPPLY REJECTION RATIO PSRR
10 kHz, VIN3 = 5 V, VOUT3 = 3.3 V 60 dB
10 kHz, VIN3 = 5 V, VOUT3 = 2.3 V 66 dB
10 kHz, VIN3 = 5 V, VOUT3 = 1.2 V 70 dB
1
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control.
2
LDO operating supply current is the current drawn from VIN3 to AGND when the LDO is enabled. Whenever any regulator channel is enabled, current is drawn from
VIN1 to AGND. This current is 8 µA typical and is included in the I
GND1
, I
GND2
, and I
GND1-2
specifications.
3
Based on an end-point calculation using 1 mA and 150 mA loads.
4
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.
5
Start-up time is defined as the time between the rising edge of EN3 to VOUT3 being at 90% of its nominal value.
6
Current-limit threshold is defined as the current at which VOUT3 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.