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ADP1872/ADP1873 Data Sheet
Rev. B | Page 8 of 40
100
20
30
25
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744303012, L = 0.12µH, DCR: 0.33mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V, V
IN
= 5.5V
V
DD
= 5.5V,
V
IN
= 5.5V (PSM)
V
DD
= 5.5V, V
IN
= 16.5V
V
DD
= 3.6V, V
IN
= 5.5V
V
DD
= 3.6V, V
IN
= 3.6V
V
DD
= 5.5V,
V
IN
= 16.5V
(PSM)
V
DD
= 5.5V, V
IN
= 13V (PSM)
V
DD
= 5.5V, V
IN
= 13V
08297-010
Figure 10. Efficiency—1.0 MHz, V
OUT
= 0.8 V
100
20
30
25
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744303022, L = 0.22µH, DCR: 0.33mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V,
V
IN
= 16.5V (PSM)
V
DD
= 5.5V, V
IN
= 5V (PSM)
V
DD
= 5.5V, V
IN
= 16.5V
V
DD
= 3.6V, V
IN
= 13V
V
DD
= 3.6V, V
IN
= 16.5V
V
DD
= 5.5V,
V
IN
= 13V
(PSM)
V
DD
= 5.5V, V
IN
= 13V
V
DD
= 5.5V,
V
IN
= 5V
08297-011
Figure 11. Efficiency—1.0 MHz, V
OUT
= 1.8 V
100
20
30
25
35
40
45
50
55
60
65
70
75
80
85
90
95
100 10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744325072, L = 0.72µH, DCR: 1.65mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V, V
IN
= 5V (PSM)
V
DD
= 5.5V, V
IN
= 16.5V (PSM)
V
DD
= 5V, V
IN
= 16.5V
V
DD
= 5V,
V
IN
= 13V
08297-012
Figure 12. Efficiency—1.0 MHz, V
OUT
= 4 V
0.8030
0.8025
0.8020
0.8015
0.8010
0.8005
0.8000
0.7995
0.7990
0.7985
0.7980
0.7975
0.7970
0.7965
0.7960
0 2000 4000 6000 8000 10,000 12,000 14,000 16,000
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
+125°C
+25°C
–40°C
V
IN
= 5.5V
+125°C
+25°C
–40°C
V
IN
= 13V
+125°C
+25°C
–40°C
V
IN
= 16.5V
08297-013
Figure 13. Output Voltage Accuracy—300 kHz, V
OUT
= 0.8 V
1.821
1.816
1.811
1.806
1.801
1.796
1.791
1.786
0 1500 3000 4500 6000 7500 9000 10,500 12,000 13,500 15,000
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
+125°C
+25°C
–40°C
V
IN
= 5.5V
+125°C
+25°C
–40°C
V
IN
= 13V
+125°C
+25°C
–40°C
V
IN
= 16.5V
08297-014
Figure 14. Output Voltage Accuracy—300 kHz, V
OUT
= 1.8 V
7.000
6.955
6.960
6.965
6.970
6.975
6.980
6.985
6.990
6.995
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000
OUTPUT VOLTAGE (V)
LOAD CURRENT (mA)
+125°C
+25°C
–40°C
V
DD
= 3.6V, V
IN
= 13V
V
DD
= 3.6V, V
IN
= 16.5V
V
DD
= 5.5V, V
IN
= 13V
V
DD
= 5.5V, V
IN
= 16.5V
08297-015
Figure 15. Output Voltage Accuracy—300 kHz, V
OUT
= 7 V