UG-057
ADP1872-EVALZ/ADP1873-EVALZ User Guide
Rev. A | Page 6 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
For the most up-to-date typical performance characteristics, see the
ADP1872
/
ADP1873
data sheet.
100
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
100k
10k
1k
E
F
F
ICI
E
NCY
(
%)
LOAD CURRENT (mA)
WURTH IND: 744325120, L = 1.2µH, DCR: 2.0mΩ
INFINEON FETS: BSC042N03MS G (UPPER/LOWER)
TA = 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
08548-
005
Figure 3. Efficiency—300 kHz, V
OUT
= 1.8 V
08548-
010
100
20
30
25
35
40
45
50
55
60
65
70
75
80
85
90
95
100
100k
10k
1k
E
F
F
ICI
E
NCY
(
%)
LOAD CURRENT (mA)
WURTH IND: 744303022, L = 0.22µH, DCR: 0.33mΩ
INFINEON FETs: BSC042N03MS G (UPPER/LOWER)
TA = 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
Figure 4. Efficiency—1 MHz, V
OUT
= 1.8 V
1.821
1.816
1.811
1.806
1.801
1.796
1.791
5.50
6.95
8.40
9.85 11.30 12.75 14.20 15.65 17.10 18.55 20.00
OU
TP
U
T V
OLTA
GE
(
V
)
V
IN
(V)
LOAD = 15A
NO LOAD
V
DD
= 5V
T
A
= 25°C
08548-
101
Figure 5. Line Regulation Plot for f
SW
= 300 kHz, V
OUT
= 1.8 V
1.815
1.813
1.811
1.809
1.807
1.805
1.803
1.801
0
1500
3000
4500
6000
7500
9000
10,500 12,000 13,500 15,000
OU
TP
U
T V
OLTA
GE
(
V
)
LOAD CURRENT (mA)
V
IN
= 16.5V
V
IN
= 13V
08548-
102
Figure 6. Load Regulation Plot for f
SW
= 300 kHz, V
OUT
= 1.8 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
OU
TP
U
T V
OLTA
GE
(
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
08548-
014
Figure 7. Output Voltage Accuracy—300 kHz, V
OUT
= 1.8 V
2.649
2.658
2.657
2.656
2.655
2.654
2.653
2.652
2.651
2.650
–40
120
100
80
60
40
20
0
–20
U
VL
O
(V)
TEMPERATURE (°C)
08548-
034
Figure 8. UVLO vs. Temperature
Содержание ADP1872-EVALZ
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