ADP5034 Analog Devices, ADP5034 Datasheet - Page 5

• Manufacturer Part Number: ADP5034
• Description: Dual 3 MHz, 1200mA Buck Regulator with Two 300 mA LDOs
• Manufacturer: Analog Devices

Data Sheet
Parameter
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
SUGGESTED INPUT AND OUTPUT CAPACITANCE
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/VIN4, 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
Regulator LDO1
Regulator LDO2
RATIO
Regulator LDO1
Regulator LDO2
BUCK1, BUCK2 Input Capacitor
BUCK1, BUCK2 Output Capacitor
LDO1, LDO2
= −40°C to +125°C, unless otherwise specified.
1
Input and Output Capacitor
4
5
Symbol
V
V
I
R
NOISE
NOISE
PSRR
LIMIT3
FB3
DROPOUT
PDWN-L
, V
, I
FB4
LIMIT4
LDO1
LDO2
Test Conditions/Comments
V
V
V
V
Channel disabled
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 kHz, V
100 kHz, V
1 MHz, V
10 kHz, V
100 kHz, V
1 MHz, V
OUT3
OUT3
OUT3
OUT3
Rev. A | Page 5 of 28
= V
= V
= V
= V
OUT4
OUT4
OUT4
OUT4
IN3
IN4
IN3
IN4
IN3
IN4
= 3.3 V, V
= 1.8 V, V
= 3.3 V, V
= 1.8 V, V
= 5.2 V, I
= 3.3 V, I
= 2.5 V, I
= 1.8 V, I
= 3.3 V, V
= 1.8 V, V
Symbol
C
C
C
R
ESR
MIN1
MIN1
MIN3
OUT3
OUT4
IN3
IN4
OUT3
OUT4
OUT3
OUT3
OUT3
OUT3
OUT3
OUT4
= 5 V, V
= 5 V, V
, C
, C
, C
= 2.8 V, I
= 1.2 V, I
= 2.8 V, I
= 1.2 V, I
= I
= I
= I
= I
= 2.8 V, I
= 1.2 V, I
MIN2
MIN2
MIN4
OUT4
OUT4
OUT4
OUT4
OUT3
OUT4
OUT3
OUT4
= 300 mA
= 300 mA
= 300 mA
= 300 mA
OUT3
OUT4
OUT3
OUT4
= 2.8 V
= 1.2 V
= 1 mA
= 1 mA
= 1 mA
= 1 mA
= 1 mA
= 1 mA
Min
4.7
7
0.70
0.001
Min
0.485
335
Typ
Typ
0.5
50
75
100
180
600
600
100
60
60
62
63
54
57
64
Max
40
40
1
Max
0.515
140
ADP5034
Unit
μF
μF
μF
Ω
Unit
V
mV
mV
mV
mV
mA
Ω
μV rms
μV rms
dB
dB
dB
dB
dB
dB