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Data Sheet ADP1872/ADP1873
Rev. B | Page 7 of 40
TYPICAL PERFORMANCE CHARACTERISTICS
100
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744355147, L = 0.47µH, DCR: 0.80mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V, V
IN
= 13V (PSM)
V
DD
= 5.5V, V
IN
= 5.5V
V
DD
= 3.6V, V
IN
= 5.5V
V
DD
= 5.5V, V
IN
= 13V
V
DD
= 3.6V, V
IN
= 13V
V
DD
= 5.5V, V
IN
= 16.5V
V
DD
= 3.6V, V
IN
= 16.5V
V
DD
= 5.5V,
V
IN
= 16.5V (PSM)
V
DD
= 5.5V,
V
IN
= 5.5V
(PSM)
08297-004
Figure 4. Efficiency—300 kHz, V
OUT
= 0.8 V
100
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744325120, L = 1.2µH, DCR: 1.8mΩ
INFINEON FETS: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V, V
IN
= 5.5V (PSM)
V
DD
= 5.5V, V
IN
= 16.5V (PSM)
V
DD
= 5.5V, V
IN
= 5.5V
V
DD
= 5.5V, V
IN
= 16.5V
V
DD
= 5.5V, V
IN
= 13V (PSM)
V
DD
= 3.6V, V
IN
= 3.6V
V
DD
= 5.5V, V
IN
= 13V
V
DD
= 3.6V, V
IN
= 5.5V
08297-005
Figure 5. Efficiency—300 kHz, V
OUT
= 1.8 V
100
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 7443551200, L = 2µH, DCR: 2.6mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
13V
IN
16.5V
IN
V
DD
= 2.7V
13V
IN
16.5V
IN
V
DD
= 3.6V
13V
IN
16.5V
IN
V
DD
= 5.5V
V
DD
= 5.5V, V
IN
= 16.5V (PSM)
V
DD
= 5.5V,
V
IN
= 16V
(PSM)
08297-006
Figure 6. Efficiency—300 kHz, V
OUT
= 7 V
100
15
25
35
20
30
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744355147, L = 0.47µH, DCR: 0.80mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V, V
IN
= 13V (PSM)
V
DD
= 5.5V, V
IN
= 5.5V (PSM)
V
DD
= 5.5V, V
IN
= 5.5V
V
DD
= 3.6V, V
IN
= 5.5V
V
DD
= 5.5V, V
IN
= 13V
V
DD
= 5.5V, V
IN
= 16.5V
V
DD
= 5.5V,
V
IN
= 16.5V
(PSM)
08297-007
Figure 7. Efficiency—600 kHz, V
OUT
= 0.8 V
100
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 744325120, L = 1.2µH, DCR: 1.8mΩ
INFINEON FETS: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V
,
= V
IN
= 5.5(PSM)
V
DD
= 5.5V, V
IN
= 5.5V
V
DD
= 5.5V, V
IN
= 16.5V
V
DD
= 5.5V, V
IN
= 16.5V (PSM)
V
DD
= 5.5V, V
IN
= 13V (PSM)
V
DD
= 3.6V, V
IN
= 5.5V
V
DD
= 5.5V, V
IN
= 13V
08297-008
Figure 8. Efficiency—600 kHz, V
OUT
= 1.8 V
100
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100 100k10k1k
EFFICIENCY (%)
LOAD CURRENT (mA)
WURTH IND: 7443551200, L = 2µH, DCR: 2.6mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
T
A
= 25°C
V
DD
= 5.5V,
V
IN
= 13V (PSM)
V
DD
= 3.6V,V
IN
= 13V
V
DD
= 5.5V, V
IN
= 16.5V (PSM)
V
DD
= 5.5V, V
IN
= 13V
V
DD
= 3.6V, V
IN
= 16.5V
V
DD
= 5.5V, V
IN
= 16.5V
08297-009
Figure 9. Efficiency—600 kHz, V
OUT
= 5 V