Datasheet

Data Sheet ADP5041
Rev. 0 | Page 5 of 40
LDO1, LDO2 SPECIFICATIONS
V
IN2,
V
IN3
= (V
OUT2
,V
OUT3
+ 0.5 V) or 1.7 V (whichever is greater) to 5.5 V; AVIN, VIN1 ≥ VIN2, VIN3; C
IN
= 1 µF, C
OUT
= 2.2 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 Conditions Min Typ Max Unit
INPUT VOLTAGE RANGE V
IN2
, V
IN3
T
J
= −40°C to +125°C 1.7 5.5 V
OPERATING SUPPLY CURRENT
Bias Current per LDO
2
I
VIN2BIAS
/I
VIN3BIAS
I
OUT3
= I
OUT4
= 0 µA 10 30 µA
I
OUT2
= I
OUT3
= 10 mA 60 100 µA
I
OUT2
= I
OUT3
= 300 mA 165 245 µA
Total System Input Current
I
IN
Includes all current into AVIN, VIN1, VIN2, and
VIN3
LDO1 or LDO2 Only I
OUT2
= I
OUT3
= 0 µA, all other channels disabled 53 µA
LDO1 and LDO2 Only I
OUT2
= I
OUT3
= 0 µA, buck disabled 74 µA
OUTPUT VOLTAGE ACCURACY V
OUT2
, V
OUT3
100 µA < I
OUT2
< 300 mA, 100 µA < I
OUT3
< 300 mA
VIN2 = (VOUT2 + 0.5 V) to 5.5 V
VIN3 = (VOUT3 + 0.5 V) to 5.5 V
−3 +3 %
REFERENCE VOLTAGE V
FB2
,V
FB3
0.485 0.500 0.515 V
REGULATION
Line Regulation (ΔV
OUT2
/V
OUT2
)/ΔV
IN2
(ΔV
OUT3
/V
OUT3
)/ΔV
IN3
VIN2 = (VOUT2 + 0.5 V) to 5.5 V
VIN3 = (VOUT3 + 0.5 V) to 5.5 V
−0.03 +0.03 %/ V
I
OUT2
= I
OUT3
= 1 mA
Load Regulation
3
(ΔV
OUT2
/V
OUT2
)/ΔI
OUT2
(ΔV
OUT3
/V
OUT3
)/ΔI
OUT3
I
OUT2
= I
OUT3
= 1 mA to 300 mA 0.002 0.0075 %/mA
DROPOUT VOLTAGE
4
V
DROPOUT
V
OUT2
= V
OUT3
= 5.0 V, I
OUT2
= I
OUT3
= 300 mA 72 mV
V
OUT2
= V
OUT3
= 3.3 V, I
OUT2
= I
OUT3
= 300 mA 86 140 mV
V
OUT2
= V
OUT3
= 2.5 V, I
OUT2
= I
OUT3
= 300 mA 107 mV
V
OUT2
= V
OUT3
= 1.8 V, I
OUT2
= I
OUT3
= 300 mA 180 mV
ACTIVE PULL-DOWN R
PDLDO
EN2/EN3 = 0 V 600 Ω
CURRENT-LIMIT THRESHOLD
5
I
LIMIT
T
J
= −40°C to +125°C 335 470 mA
OUTPUT NOISE OUT
LDO2NOISE
10 Hz to 100 kHz, V
IN3
= 5 V, V
OUT3
= 3.3 V 123 µV rms
10 Hz to 100 kHz, V
IN3
= 5 V, V
OUT3
= 2.8 V 110 µV rms
10 Hz to 100 kHz, V
IN3
= 5 V, V
OUT3
= 1.5 V 59 µV rms
OUT
LDO1NOISE
10 Hz to 100 kHz, V
IN2
= 5 V, V
OUT2
= 3.3 V 140 µV rms
10 Hz to 100 kHz, V
IN2
= 5 V, V
OUT2
= 2.8 V 129 µV rms
10 Hz to 100 kHz, V
IN2
= 5 V, V
OUT2
= 1.5 V 66
µV rms
POWER SUPPLY REJECTION
RATIO
PSRR 1 kHz, V
IN2
, V
IN3
= 3.3 V, V
OUT2
, V
OUT3
= 2.8 V,
I
OUT
= 100 mA
66 dB
100 kHz, V
IN2
, V
IN3
= 3.3 V, V
OUT2
, V
OUT3
= 2.8 V,
I
OUT
= 100 mA
57 dB
1 MHz, V
IN2
, V
IN3
= 3.3 V, V
OUT2
, V
OUT3
= 2.8 V,
I
OUT
= 100 mA
60 dB
1
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
2
This is the input current into VIN2 and VIN3 that is not delivered to the output load.
3
Based on an end-point 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.