ADP5023 Analog Devices, ADP5023 Datasheet - Page 5

• Manufacturer Part Number: ADP5023
• Description: Dual 3 MHz, 800 mA Buck Regulator with One 300 mA LDO
• Manufacturer: Analog Devices

Data Sheet
LDO SPECIFICATIONS
V
specifications, and T
Table 3.
Parameter
INPUT VOLTAGE RANGE
OPERATING SUPPLY CURRENT
OUTPUT CHARACTERISTICS
VOLTAGE FEEDBACK
DROPOUT VOLTAGE
CURRENT-LIMIT THRESHOLD
ACTIVE PULL-DOWN
OUTPUT NOISE
POWER SUPPLY REJECTION
1
2
3
4
5
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
T
Table 4.
Parameter
NOMINAL INPUT AND OUTPUT CAPACITOR RATINGS
CAPACITOR ESR
1
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
This is the input current into VIN3, which is not delivered to the output load.
Based on an endpoint calculation using 1 mA and 300 mA loads.
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.
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.
The minimum input and output capacitance should be greater than 0.70 µF 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 because of their poor temperature and dc bias characteristics.
A
IN3
Bias Current per LDO
Total System Input Current
Output Voltage Accuracy
Line Regulation
Load Regulation
Regulator LDO
RATIO
Regulator LDO
BUCK1, BUCK2 Input Capacitor Ratings
BUCK1, BUCK2 Output Capacitor Ratings
LDO
= −40°C to +125°C, unless otherwise specified.
= (V
LDO Only
1
Input and Output Capacitor Ratings
OUT3
+ 0.5 V) or 1.7 V (whichever is greater) to 5.5 V; C
3
4
A
= 25°C for typical specifications, unless otherwise noted.
2
5
Symbol
V
I
I
ΔV
(ΔV
(ΔV
V
V
I
R
NOISE
PSRR
VIN3BIAS
IN
LIMIT3
IN3
FB3
DROPOUT
PDWN-L
OUT3
OUT3
OUT3
/V
LDO
/V
/V
OUT3
OUT3
OUT3
)/ΔV
)/ΔI
OUT3
IN3
Test Conditions/Comments
I
I
I
Includes all current into AVIN, VIN1, VIN2, and
VIN3
I
100 µA < I
I
I
V
V
V
V
Channel disabled
10 Hz to 100 kHz, V
10 kHz, V
100 kHz, V
1 MHz, V
OUT3
OUT3
OUT3
OUT3
OUT3
OUT3
OUT3
OUT3
OUT3
OUT3
= 0 µA
= 10 mA
= 300 mA
= 0 µA, all other channels disabled
= 1 mA
= 1 mA to 300 mA
Rev. A | Page 5 of 28
= 5.2 V, I
= 3.3 V, I
= 2.5 V, I
= 1.8 V, I
IN
IN3
IN3
IN3
= C
OUT3
= 3.3 V, V
= 3.3 V, V
= 3.3 V, V
OUT3
OUT3
OUT3
OUT3
OUT
< 300 mA
Symbol
C
C
C
R
= 300 mA
= 300 mA
= 300 mA
= 300 mA
= 1 µF; T
ESR
MIN1
MIN1
MIN3
OUT3
IN3
OUT3
OUT3
= 5 V, V
, C
, C
, C
= 2.8 V, I
= 2.8 V, I
1
= 2.8 V, I
MIN2
MIN2
MIN4
J
= −40°C to +125°C for minimum/maximum
OUT3
OUT3
OUT3
OUT3
= 2.8 V
= 1 mA
= 1 mA
= 1 mA
Min
4.7
10
1.0
0.001
Min
1.7
−3
−0.03
0.485
335
Typ
Typ
10
60
165
53
0.001
0.5
50
75
100
180
600
600
100
60
62
63
Max
40
40
1
Max
5.5
30
100
245
+3
+0.03
0.003
0.515
140
ADP5023
Unit
µF
µF
µF
Ω
Unit
V
µA
µA
µA
µA
%
%/ V
%/mA
V
mV
mV
mV
mV
mA
Ω
µV rms
dB
dB
dB