Datasheet

Data Sheet ADP5024
Rev. E | Page 5 of 28
LDO SPECIFICATIONS
V
IN3
= (V
OUT3
+ 0.5 V) or 1.7 V (whichever is greater) to 5.5 V; C
IN
= C
OUT
= 1 µF; T
J
= −40°C to +125°C for minimum/maximum
specifications, and T
A
= 25°C for typical specifications, unless otherwise noted.
1
Table 4.
Parameter
Symbol
Test Conditions/Comments
Min
Typ
Max
Unit
INPUT VOLTAGE RANGE
V
IN3
1.7
5.5
V
OPERATING SUPPLY CURRENT
Bias Current per LDO
2
I
VIN3BIAS
I
OUT3
= 0 µA
10
30
µA
I
OUT3
= 10 mA
60
100
µA
I
OUT3
= 300 mA
165
245
µA
Total System Input Current
I
IN
Includes all current into AVIN, VIN1,
VIN2, and VIN3
LDO Only
I
OUT3
= 0 µA, all other channels
disabled
53
µA
OUTPUT CHARACTERISTICS
Output Voltage Accuracy
ΔV
OUT3
/V
OUT3
100 µA < I
OUT3
< 300 mA
−1.8
+1.8
%
Line Regulation (ΔV
OUT3
/V
OUT3
)/ΔV
IN3
I
OUT3
= 1 mA −0.03 +0.03 %/V
Load Regulation
3
(ΔV
OUT3
/V
OUT3
)/ΔI
OUT3
I
OUT3
= 1 mA to 300 mA 0.001 0.003 %/mA
VOLTAGE FEEDBACK
V
FB3
0.491
0.5
0.509
V
DROPOUT VOLTAG E
4
V
DROPOUT
V
OUT3
= 5.2 V, I
OUT3
= 300 mA 50 mV
V
OUT3
= 3.3 V, I
OUT3
= 300 mA 75 140
V
OUT3
= 2.5 V, I
OUT3
= 300 mA
100
mV
V
OUT3
= 1.8 V, I
OUT3
= 300 mA
180
mV
CURRENT-LIMIT THRESHOLD
5
I
LIMIT3
335
600
mA
ACTIVE PULL-DOWN R
PDWN-L
Channel disabled 600 Ω
OUTPUT NOISE
Regulator LDO NOISE
LDO
10 Hz to 100 kHz, V
IN3
= 5 V, V
OUT3
= 2.8 V 100 µV rms
POWER SUPPLY REJECTION
RATIO
PSRR
Regulator LDO 10 kHz, V
IN3
= 3.3 V, V
OUT3
= 2.8 V,
I
OUT3
= 1 mA
60 dB
100 kHz, V
IN3
= 3.3 V, V
OUT3
= 2.8 V,
I
OUT3
= 1 mA
62 dB
1 MHz, V
IN3
= 3.3 V, V
OUT3
= 2.8 V,
I
OUT3
= 1 mA
63
dB
1
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
2
This is the input current into VIN3, which is not delivered to the output load.
3
Based on an endpoint calculation using 1 mA and 300 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 to output voltages
above 1.7 V.
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.