ADP5042
Data Sheet
Rev. A | Page 6 of 32
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Load Regulation
1
V
OUT2
/I
OUT2
V
OUT3
/I
OUT3
I
OUT2
,
V
OUT3
= 1 mA to 200 mA
0.002
%/mA
I
OUT2
,
V
OUT3
= 1 mA to 200 mA
0.0075
%/mA
TJ = 40癈 to +125癈
DROPOUT VOLTAGE
2
V
DROPOUT
V
OUT2
,
V
OUT3
= 3.3 V
I
OUT2
,
I
OUT3
= 10 mA
4
mV
IOUT2, IOUT3 = 10 mA, TJ = 40癈 to +125癈
5
mV
IOUT2, IOUT3 = 200 mA
60
mV
IOUT2, IOUT3 = 200 mA, TJ = 40癈 to +125癈
100
mV
ACTIVE PULL-DOWN
RPDLDO
EN2/EN3 = 0 V
600
?
START-UP TIME
T
START-UP
V
OUT2
,
V
OUT3
= 3.3 V
85
祍
CURRENT-LIMIT THRESHOLD
3
I
LIMIT
T
J
= 40癈 to +125癈
335
470
mA
OUTPUT NOISE
OUTLDO2NOISE
10 Hz to 100 kHz, VIN3 = 5 V, VOUT3 = 3.3 V
123
礦 rms
10 Hz to 100 kHz, VIN3 = 5 V, VOUT3 = 2.8 V
110
礦 rms
10 Hz to 100 kHz, V
IN3
= 5 V, V
OUT3
= 1.5 V
59
礦 rms
OUT
LDO1NOISE
10 Hz to 100 kHz, V
IN2
= 5 V, V
OUT2
= 3.3 V
140
礦 rms
10 Hz to 100 kHz, V
IN2
= 5 V, V
OUT2
= 2.8 V
129
礦 rms
10 Hz to 100 kHz, VIN2 = 5 V, VOUT2 = 1.5 V
66
礦 rms
POWER SUPPLY REJECTION RATIO
PSRR
1 kHz, V
IN2
,
V
IN3
= 3.3 V, V
OUT2, OUT3
= 2.8 V,
IOUT = 100 mA
66
dB
100 kHz, VIN2, VIN3 = 3.3 V, VOUT2, VOUT3 = 2.8 V,
IOUT = 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
Based on an end-point calculation using 1 mA and 100 mA loads.
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
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
Table 5.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
MINIMUM OUTPUT CAPACITANCE (BUCK)
1
CMIN1
TJ = 40癈 to +125癈
7
40
礔
MINIMUM INPUT AND OUTPUT CAPACITANCE
2
(LDO1, LDO2) CMIN23
TJ = 40癈 to +125癈
0.70
礔
CAPACITOR ESR
R
ESR
T
J
= 40癈 to +125癈
0.001
1
?
1
The minimum output capacitance should be greater than 4.7 礔 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.
2
The minimum input and output capacitance should be greater than 0.70 礔 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 LDOs or the buck.
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