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ADP5042 Datasheet(PDF) 16 Page - Analog Devices

Part # ADP5042
Description  Micro PMU with 0.8 A Buck, Two 300 mA LDOs Supervisory, Watchdog and Manual Reset
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP5042 Datasheet(HTML) 16 Page - Analog Devices

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ADP5042
Rev. 0 | Page 16 of 32
LOAD (mA)
100
10
CH2; VOUT = 3.3V; VIN = 5V
CH2; VOUT = 3.3V; VIN = 3.6V
CH2; VOUT = 2.8V; VIN = 3.1V
CH2; VOUT = 1.5V; VIN = 5V
CH2; VOUT = 1.5V; VIN = 1.8V
0.0001
0.001
0.01
0.1
1
10
100
1k
Figure 45. LDO1 Output Noise vs. Load Current, Across Input and Output Voltage
LOAD (mA)
100
10
CH3; VOUT = 3.3V; VIN = 5V
CH3; VOUT = 3.3V; VIN = 3.6V
CH3; VOUT = 2.8V; VIN = 3.1V
CH3; VOUT = 1.5V; VIN = 5V
CH3; VOUT = 1.5V; VIN = 1.8V
0.0001
0.001
0.01
0.1
1
10
100
1k
Figure 46. LDO2 Output Noise vs. Load Current, Across Input and Output Voltage
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
VOUT2 = 3.3V, VIN2 = 3.6V, ILOAD = 300mA
VOUT2 = 1.5V, VIN2 = 1.8V, ILOAD = 300mA
VOUT2 = 2.8V, VIN2 = 3.1V, ILOAD = 300mA
100
10
1.0
0.1
0.01
Figure 47. LDO1 Noise Spectrum Across Output Voltage, VIN = VOUT + 0.3 V
VOUT3 = 3.3V, VIN3 = 3.6V, ILOAD = 300mA
VOUT3 = 1.5V, VIN3 = 1.8V, ILOAD = 300mA
VOUT3 = 2.8V, VIN3 = 3.1V, ILOAD = 300mA
100
10
1
0.1
0.01
1
10
100
1k
FREQUENCY (Hz)
10k
100k
1M
Figure 48. LDO2 Noise Spectrum Across Output Voltage, VIN = VOUT + 0.3 V
100
10
1.0
0.1
0.01
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
VOUT3 = 1.5V, VIN3 = 1.8V, ILOAD = 300mA
VOUT2 = 2.8V, VIN2 = 3.1V, ILOAD = 300mA
VOUT3 = 2.8V, VIN3 = 3.1V, ILOAD = 300mA
VOUT2 = 3.3V, VIN2 = 3.6V, ILOAD = 300mA
VOUT3 = 3.3V, VIN3 = 3.6V, ILOAD = 300mA
VOUT2 = 1.5V, VIN2 = 1.8V, ILOAD = 300mA
Figure 49. LDO1 vs. LDO2 Noise spectrum
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
10
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
1mA
10mA
100mA
200mA
300mA
Figure 50. LDO2 PSRR Across Output Load, VIN3 = 3.3 V, VOUT3 = 2.8 V



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