ADP5042 Analog Devices, ADP5042 Datasheet - Page 6

• Manufacturer Part Number: ADP5042
• Description: Micro PMU with 0.8 A Buck, Two 300 mA LDOs, Supervisory, Watchdog and Manual Reset
• Manufacturer: Analog Devices

ADP5042
Parameter
DROPOUT VOLTAGE
ACTIVE PULL-DOWN
START-UP TIME
CURRENT-LIMIT THRESHOLD
OUTPUT NOISE
POWER SUPPLY REJECTION RATIO
1
2
3
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
Table 5.
Parameter
MINIMUM OUTPUT CAPACITANCE (BUCK)
MINIMUM INPUT AND OUTPUT CAPACITANCE
CAPACITOR ESR
1
2
Based on an end-point calculation using 1 mA and 100 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 for output
voltages above 2.3 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 output capacitance should be greater than 4.7 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.
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 with LDOs or the buck.
Load Regulation
1
2
3
Symbol
∆V
∆V
V
R
T
I
OUT
OUT
PSRR
LIMIT
1
PDLDO
START-UP
DROPOUT
OUT2
OUT3
LDO2NOISE
LDO1NOISE
2
(LDO1, LDO2)
/∆I
/∆I
OUT2
OUT3
Conditions
I
I
T
V
I
I
I
I
EN2/EN3 = 0 V
V
T
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
10 Hz to 100 kHz, V
1 kHz, V
I
100 kHz, V
I
1 MHz, V
I
OUT2
OUT2
OUT2
OUT2
OUT2
OUT2
OUT
OUT
OUT
J
J
OUT2
OUT2
= −40°C to +125°C
= −40°C to +125°C
= 100 mA
= 100 mA
= 100 mA
, V
, V
, I
, I
, I
, I
, V
, V
OUT3
OUT3
OUT3
OUT3
Rev. A | Page 6 of 32
Symbol
C
C
R
OUT3
OUT3
ESR
OUT3
OUT3
MIN1
MIN23
IN2
IN2
= 10 mA
= 10 mA, T
= 200 mA
= 200 mA, T
IN2
, V
= 1 mA to 200 mA
= 1 mA to 200 mA
, V
= 3.3 V
= 3.3 V
, V
IN3
IN3
IN3
= 3.3 V, V
= 3.3 V, V
= 3.3 V, V
Conditions
T
T
T
IN3
IN3
IN3
IN2
IN2
IN2
J
J
J
J
= −40°C to +125°C
= −40°C to +125°C
= −40°C to +125°C
= −40°C to +125°C
J
= 5 V, V
= 5 V, V
= 5 V, V
= 5 V, V
= 5 V, V
= 5 V, V
= −40°C to +125°C
OUT2, OUT3
OUT2
OUT2
, V
, V
OUT3
OUT3
OUT3
OUT2
OUT2
OUT2
OUT3
OUT3
= 2.8 V,
= 3.3 V
= 2.8 V
= 1.5 V
= 3.3 V
= 2.8 V
= 1.5 V
= 2.8 V,
= 2.8 V,
Min
335
Min
7
0.70
0.001
Typ
0.002
4
60
600
85
470
123
110
59
140
129
66
66
57
60
Typ
Max
0.0075
5
100
Data Sheet
Max
40
1
Unit
%/mA
%/mA
mV
mV
mV
mV
Ω
µs
mA
µV rms
µV rms
µV rms
µV rms
µV rms
µV rms
dB
dB
dB
Unit
µF
µF
Ω