ADP1875 Analog Devices, ADP1875 Datasheet - Page 9

• Manufacturer Part Number: ADP1875
• Description: Synchronous Buck Controller with Constant On-Time, Valley Current Mode, and Power Saving Mode
• Manufacturer: Analog Devices

100
100
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
5
0
5
0
10
10
10
V
V
V
IN
IN
IN
= 16.5V (PSM)
= 16.5V (PSM)
V
= 13V (PSM)
IN
Figure 10. Efficiency—1.0 MHz, V
Figure 11. Efficiency—1.0 MHz, V
V
V
Figure 12. Efficiency—1.0 MHz, V
IN
IN
= 16.5V (PSM)
= 13V (PSM)
= 13V (PSM)
100
100
100
LOAD CURRENT (mA)
LOAD CURRENT (mA)
LOAD CURRENT (mA)
WÜRTH INDUCTOR:
744303012, L = 0.12µH, DCR = 0.33mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
T
V
f
WÜRTH INDUCTOR:
744303022, L = 0.22µH, DCR = 0.33mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
WÜRTH INDUCTOR:
744355090, L = 0.9µH, DCR = 1.6mΩ
INFINEON FETs:
BSC042N03MS G (UPPER/LOWER)
SW
A
OUT
T
V
f
T
V
f
SW
A
OUT
= 25°C
SW
V
A
OUT
= 1.0MHz
= 25°C
IN
V
= 25°C
= 1.8V
= 1.0MHz
1k
1k
1k
= 1.0MHz
IN
= 0.8V
= 13V
V
= 5V
IN
= 13V
V
= 16.5V
IN
= 16.5V
V
IN
V
OUT
OUT
OUT
IN
= 13V
10k
10k
10k
= 16.5V
= 0.8 V
= 1.8 V
= 5 V
100k
100k
100k
Rev. 0 | Page 9 of 44
1.821
1.816
1.811
1.806
1.801
1.796
1.791
1.786
7.100
7.095
7.090
7.085
7.080
7.075
7.070
7.065
7.060
7.055
7.050
7.045
7.040
7.035
7.030
7.025
7.020
7.015
7.010
7.005
7.000
0.807
0.806
0.805
0.804
0.803
0.802
0.801
0.800
0.799
0.798
0.797
0.796
0.795
0.794
0.793
0.792
Figure 13. Output Voltage Accuracy—300 kHz, V
Figure 14. Output Voltage Accuracy—300 kHz, V
Figure 15. Output Voltage Accuracy—300 kHz, V
0
0
0
1500
1000
V
IN
= 13V
+125°C
+25°C
–40°C
2000
V
+125°C
+25°C
–40°C
3000
IN
2000
= 5.5V
+125°C
+25°C
–40°C
4500
3000
4000
LOAD CURRENT (mA)
LOAD CURRENT (mA)
V
LOAD CURRENT (mA)
IN
6000
V
V
IN
IN
= 16.5V
4000
V
= 13V
= 16.5V
+125°C
+25°C
–40°C
IN
7500
6000
= 13V
ADP1874/ADP1875
+125°C
+25°C
–40°C
5000
9000 10,500 12,000 13,500 15,000
6000
8000
V
IN
= 16.5V
7000
+125°C
+25°C
–40°C
10,000
OUT
OUT
OUT
8000
= 0.8 V
= 1.8 V
= 7 V
9000