ADP5023 Analog Devices, ADP5023 Datasheet - Page 12

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

ADP5023
Figure 29. VOUT and SW Waveforms for BUCK1 and BUCK2 in PWM Mode
Figure 27. BUCK1 Response to Load Transient, I
Figure 28. BUCK2 Response to Load Transient, I
4
1
2
4
1
2
2
3
1
4
CH1
CH1 100mV
CH1 5.00V
CH3 5.00V
50.0mV
VOUT2
VOUT1
SW1
SW2
T
T
Showing Out-of-Phase Operation
VOUT
I
OUT
SW
CH2 200mA Ω
CH4 5.00V
CH2 200mA Ω
CH4
CH4 5.00V
CH2
V
V
OUT1
OUT2
VOUT
5.00V
I
5.00V
OUT
SW
= 3.3 V, Auto Mode
= 1.8 V, Auto Mode
T
M 20.0µs A CH2
M 400ns
M 20.0µs A CH2
T
T
T
19.20%
50.00%
20.40%
OUT1
OUT2
A CH4
= 20 mA to 180 mA,
= 20 mA to 180 mA,
88.0mA
408mA
1.90V
Rev. A | Page 12 of 28
Figure 31. LDO Load Regulation Across Input Voltage, V
2.820
2.815
2.810
2.805
2.800
2.795
2.790
2.785
2.780
2
1
3
400
350
300
250
200
150
100
Figure 32. NMOS RDS
50
CH1
CH3 5.00V
0
2.3
0
2.00V
Figure 30. LDO Startup, V
T
VOUT
2.8
0.05
EN
I
IN
CH2 50.0mA Ω
3.3
0.10
ON
INPUT VOLTAGE (V)
vs. Input Voltage Across Temperature
I
3.8
OUT
0.15
OUT3
–40°C
+25°C
(A)
M 40.0µs
T
= 3.0 V, I
11.20%
4.3
0.20
+125°C
OUT3
A CH3
4.8
Data Sheet
= 5 mA
0.25
V
V
V
V
IN
IN
IN
IN
OUT3
= 3.3V
= 4.5V
= 5.0V
= 5.5V
2.2V
5.3
= 2.8 V
0.30